1Description
2400 MHz wireless transceiver (transmitter and
receiver) with RS-232 and RS-485 interface,
can be extended with I/O extension modules
SATEL-LP24
© SATEL
Data sheet
Wireless communication is based on Trusted Wireless 2.0
technology. The high demand for an interference-free data
transmission using the license-free 2.4 GHz band, in partic-
ular via the use of the FHSS method (FHSS) and 128-bit
data encryption (AES), is fulfilled.
In addition to an RS-232 and RS-485 2-wire interface, the
SATEL-LP24 wireless module supports the option of di-
rectly connecting up to 32 I/O extension modules in the sta-
tion structure via the TBUS DIN rail connector.
Addressing of the wireless module and I/O mapping of the
I/O extension modules is carried out quickly and easily by
means of the thumbwheel on the front. Programming knowl-
edge is not required.
The SATEL-LP-CONF configuration and diagnostics soft-
ware for special functionality and diagnostic options in the
wireless module is available free of charge.
Features
– Flexible network applications: I/O data, serial data,
PLC/Modbus RTU mode
– Adjustable data rates for the wireless interface
– Easy point-to-point or network structures (star, mesh)
– Quick and easy startup thanks to simple wireless
module addressing using the thumbwheel on the front
– Integrated RS-232 and RS-485 interface
– Can be extended with up to 32 I/O modules per station
via TBUS (hot-swappable)
– 128-bit data encryption (AES)
– Unique network addressing via plug-in configuration
memory for secure, parallel operation of multiple net-
works (different RF bands)
– Data rates and ranges can be adjusted
– International approvals
Make sure you always use the latest documentation.
It can be downloaded from the product at www.satel.com
.
For the latest country registrations, please visit www.satel.com
.
106915_en_00
2015-10-26
SATEL-LP24
106915_en_00 SATEL 2
2Table of contents
1 Description .............................................................................................................................. 1
2 Table of contents..................................................................................................................... 2
3 Ordering data .......................................................................................................................... 3
4 Technical data ......................................................................................................................... 4
5 Safety regulations and installation notes.................................................................................. 7
5.1 Intended use ...................................................................................................................... 7
5.2 Installation notes ................................................................................................................. 7
5.3 UL Notes ........................................................................................................................... 8
5.4 Conformance...................................................................................................................... 8
6 Installation ............................................................................................................................... 9
6.1 Structure ........................................................................................................................... 9
6.2 Basic circuit diagram ............................................................................................................ 9
6.3 Display and diagnostic elements ........................................................................................... 10
6.4 Assembly/removal ............................................................................................................. 13
6.5 Connecting the cables ........................................................................................................ 14
6.6 Serial pin assignment ......................................................................................................... 14
7 Startup and configuration ......................................................................................................16
7.1 Resetting to the default settings............................................................................................. 16
7.2 Setting the station address (RAD-ID) ...................................................................................... 16
7.3 Transmission capacity ........................................................................................................ 17
7.4 Data transmission speed of the wireless interface...................................................................... 17
7.5 I/O data transmission.......................................................................................................... 17
7.6 SATEL-LP-CONF configuration and diagnostics software............................................................ 18
7.7 Serial data transmission ...................................................................................................... 18
7.8 PLC/Modbus RTU mode ..................................................................................................... 18
7.9 Behavior of the input and output modules in the event of an interrupted wireless connection ................ 19
7.10 Saving the wireless network ................................................................................................. 19
7.11 Copying device settings to new network devices ....................................................................... 20
8 Process data.......................................................................................................................... 21
SATEL-LP24
106915_en_00 SATEL 3
Description Type Order No. Pcs./Pkt.
2400 MHz wireless transceiver with RS-232, RS-485 2-wire interface,
expandable with I/O extension modules, with screw connection, antenna
connection: RSMA (female), including DIN rail connector, without antenna
SATEL-LP24 YM0424 1
3Ordering data
Accessories Type Order No. Pcs./Pkt.
Digital I/O extension module with 4 digital inputs (0...250 V AC/DC),
with screw connection, incl. DIN rail connector
SATEL-LP-DI4 YI0101 1
Digital I/O extension module with 4 digital relay outputs
(6 A, 250 V AC/ 24 V DC), with screw connection, incl. DIN rail connector
SATEL-LP-DOR4 YI0102 1
Analog extension module with 4 analog current inputs (0/4 mA ... 20 mA),
with screw connection, incl. DIN rail connector
SATEL-LP-AI4 YI0103 1
Analog I/O extension module with 4 analog current/voltage outputs
(0/4 mA ... 20 mA, 0...10 V), with screw connection, incl. DIN rail connector
SATEL-LP-AO4 YI0104 1
Analog/digital I/O extension module with 2 digital inputs/outputs
(0...250 V AC/DC) and 1 analog input (0/4...20 mA) and output
(0/4 ... 20 mA, 0...10 V), with screw connection, incl. DIN rail connector
SATEL-LP-DAIO6 YI0105 1
Digital I/O extension module with 8 digital inputs (0 ... 30.5 V DC) or 2 pulse
inputs (0 ... 100 Hz), with screw connection, including DIN rail connector
SATEL-LP-DI8 YI0106 1
Digital I/O extension module with 8 digital transistor outputs
(30.5 VDC/200 mA), with screw connection, including DIN rail connector
SATEL-LP-DO8 YI0107 1
Temperature I/O extension module with 4 PT100 inputs (-50...+250°C),
with screw connection, including DIN rail connector
SATEL-LP-PT100 YI0108 1
USB data cable for communication between the PC and SATEL-LP de-
vices. Energy supply for diagnostics and configuration via the USB port of
the PC, cable length: 2 m
SATEL-LP-PROG YC0520 1
Configuration stick for easy and secure network addressing for the 2.4 GHz
wireless module, unique network ID, RF band 3
SATEL-LP-CONF3 YO0003 1
Configuration stick for easy and secure network addressing for the 2.4 GHz
wireless module, unique network ID, RF band 5
SATEL-LP-CONF5 YO0005 1
Configuration stick for easy and secure network addressing for the 2.4 GHz
wireless module, unique network ID, RF band 7
SATEL-LP-CONF7 YO0007 1
Memory stick for saving individual configuration data for the SATEL-LP
wireless module
SATEL-LP-MEMORY YO0010
Omnidirectional antenna, 2.4 GHz, 6 dBi, linear vertical, opening angle h/v
360°/30°, N (female), IP55, incl. mounting bracket and mast clips for
45mm - 100mm diameter, stainless steel
SATEL-LP-ANT24N YA2400 1
Antenna cable, 2 m in length; N (male) -> RSMA (male),
impedance 50 ohms
SATEL-LP-RF2 YC1520 1
SATEL-LP24
106915_en_00 SATEL 4
4 Technical data
Dimensions
Dimensions W/H/D 17.5 mm / 99 mm / 114.5 mm
General data
Overvoltage category II
Degree of protection IP20
Pollution degree 2
Type of housing PA 6.6-FR, green
Flammability rating according to UL 94 V0
MTTF (mean time to failure) Telcordia standard, 25°C temperature,
21% operating cycle (5 days a week, 8 hours a day)
778 Years
MTTF (mean time to failure) Telcordia standard, 40°C temperature,
34.25% operating cycle (5 days a week, 12 hours a day)
358 Years
MTTF (mean time to failure) Telcordia standard, temperature 40°C,
operating cycle 100% (7 days a week, 24 hours a day)
142 Years
Supply
Supply voltage range 19.2 V DC ... 30.5 V DC
Max. current consumption ≤ 65 mA (@ 24V DC, @25°C, stand-alone)
≤ 6 A (@24V DC, with fully utilized TBUS)
Transient surge protection Yes
System limits
Wireless module, Number of supported devices ≤ 250 (Addressing via SATEL-LP-CONF software)
≤ 99 (Addressing via thumbwheel)
Wireless module, Number of possible extension modules ≤ 32 (per wireless module)
Wireless network, Number of supported devices, I/O data mode ≤ 99 (I/O extension modules per wireless network, serial interfaces deactivated)
Wireless network, Number of supported devices, Serial data mode 0 (no I/O extension modules can be used)
Wireless network, Number of supported devices, PLC/Modbus RTU mode ≤ 99 (I/O extension modules per wireless network, access to extension modules
via Modbus RTU protocol)
Wireless interface
Antenna connection method RSMA (female)
Direction Bi-directional
Frequency 2400 MHz
Frequency range 2.4002 GHz ... 2.4785 GHz
Number of channel groups 8
Number of channels per group 55
Channel distance 1.3 MHz
Data transmission rate (adjustable) 16 kbps
125 kbps
250 kbps
Receiver sensitivity -106 dBm (16 kbps)
-96 dBm (125 kbps)
-93 dBm (250 kbps)
Transmit capacity, maximum ≤ 20 dBm (Outside of Europe, adjustable via software)
≤ 19 dBm (Europe, can be set via software, depends on the data rate)
18 dBm (Default setting, adjustable)
Security 128-bit data encryption
SATEL-LP24
106915_en_00 SATEL 5
RS-232, 3-wire
Connection method Plug-in screw terminal block
Transmission speed 0,3 ... 115,2 kbit/s
Transmission length ≤ 15 m
RS-485, 2-wire
Connection method Plug-in screw terminal block
Transmission speed 0,3 ... 187,5 kbit/s
Transmission length ≤ 1200 m
Termination resistor (switchable via DIP switches) 390 Ω / 150 Ω / 390 Ω
RSSI output
Number of outputs 1
Voltage output signal 0 V ... 3 V
RF link relay output
Number of outputs 1
Contact type PDT
Contact material PdRu, gold-plated
Maximum switching voltage 30 V AC/DC
60 V DC
Max. switching current 500 mA (30VAC/DC)
300 mA (60 V DC)
Electrical service life 5 x 10
5
cycles with 0.5 A @ 30 V DC
Connection data
Connection method Screw connection
Conductor cross section, solid 0.2 mm² ... 2.5 mm²
Conductor cross section, flexible 0.2 mm² ... 2.5 mm²
Conductor cross section AWG/kcmil 24 ... 14
Stripping length 7 mm
Tightening torque 0.6 Nm
Status indication
Status display Green LED (supply voltage, PWR)
Green LED (bus communication, DAT)
Red LED (periphery error, ERR)
3 x green, 1 x yellow LED (LED bar graph receive quality, RSSI)
GreenLED (receive data, RX)
GreenLED (transmit data, TX)
Ambient conditions
Ambient temperature (operation) -40 °C ... 70 °C (>55°CDerating)
-40 °F ... 158 °F (>131°F derating)
Ambient temperature (storage/transport) -40 °C ... 85 °C
-40 °F ... 185 °F
Permissible humidity (operation) 20 % ... 85 %
Permissible humidity (storage/transport) 20 % ... 85 %
Altitude 2000 m
Vibration (operation) in accordance with IEC 60068-2-6: 5g, 10 Hz ... 150 Hz
Shock 16g, 11 ms
SATEL-LP24
106915_en_00 SATEL 6
Certification
Conformance CE compliance (R&TTE directive 1999/5/EC)
FCC Directive, Part 15.247
ISC Directive RSS 210
UL, USA / Canada UL 508 Listed
Class I, Div. 2, Groups A, B, C, D T4A
Class I, Zone 2, IIC T4
Conformance
R&TTE Directive 1999/5/EC
Effective use of the radio spectrum according to EN 300328
Noise immunity according to EN 61000-6-2
Noise emission according to EN 61000-6-4
Health according to EN 50385
Electrical safety according to EN 60950-1
SATEL-LP24
106915_en_00 SATEL 7
5 Safety regulations and installation
notes
5.1 Intended use
The devices are intended for application in industrial envi-
ronments.
The wireless system is ClassA equipment and may cause
radio interference in residential areas. In this case, the oper-
ator may be required to implement appropriate measures
and to pay the costs incurred as a result.
This device complies with R&TTE device class 1, with the
following restrictions on use according to ERC recommen-
dation 70-03:
Please note that, in combination with antennas, the maxi-
mum permissible transmission power may be exceeded. In
this case, set the transmission power via the software (see
Section 7.3 “Transmission power”).
5.2 Installation notes
• Operation of the wireless system is only permitted if ac-
cessories available from Satel are used. The use of any
other components can lead to withdrawal of the operat-
ing license.
• Satel hereby declares that this wireless system com-
plies with the basic requirements and other relevant
regulations specified in Directive 1999/5/EC.
• Installation, operation, and maintenance may only be
carried out by qualified electricians. Follow the installa-
tion instructions as described.
• When installing and operating the device, the applica-
ble regulations and safety directives (including national
safety directives), as well as general technical regula-
tions, must be observed. The technical data is provided
in the package slip and on the certificates (conformity
assessment, additional approvals where applicable).
• The device must not be opened or modified. Do not re-
pair the device yourself, replace it with an equivalent de-
vice. Repairs may only be carried out by the
manufacturer. The manufacturer is not liable for dam-
age resulting from violation.
• The IP20 protection (IEC 60529/EN 60529) of the de-
vice is intended for use in a clean and dry environment.
The device must not be subject to mechanical strain
and/or thermal loads, which exceed the limits de-
scribed.
Norway: The device must not be operated within
20km of Ny Ålesund town center.
Turkey: The device may only be operated with
Satel antennas in accordance with the
“Short Range Radio Devices (SRD)
Regulations” Gazette No. 26464 dated
March 16, 2007.
Install the wireless module at least 1m away
from other devices using the 2.4GHz fre-
quency band (e.g., WLAN, Bluetooth, micro-
wave ovens). Otherwise, both the
transmission quality and data transmission
rate will be reduced.
WARNING: Risk of electric shock
During operation, certain parts of this device
may carry hazardous voltages. Disregarding
this warning may result in damage to equip-
ment and/or serious personal injury.
– Provide a switch/circuit breaker close to
the device, which is labeled as the dis-
connect device for this device or the en-
tire control cabinet.
– Provide overcurrent protection (I≤6A) in
the installation.
– Disconnect the device from all power
sources during maintenance work and
configuration (the device can remain con-
nected to SELV or PELV circuits).
– The housing of the device provides a ba-
sic insulation against the neighboring de-
vices, for 300 V eff. If several devices are
installed next to each other, this has to be
taken into account, and additional insula-
tion has to be installed if necessary. If the
neighboring device is equipped with ba-
sic insulation, no additional insulation is
necessary.
SATEL-LP24
106915_en_00 SATEL 8
• To protect the device against mechanical or electrical
damage, install it in a suitable housing with appropriate
degree of protection as per IEC60529.
• The device complies with the EMC regulations for in-
dustrial areas (EMC classA). When using the device in
residential areas, it may cause radio interference.
• Only specified devices from Satel may be connected to
the 12-pos. S-PORT interface.
5.3 UL Notes
5.4 Conformance
FCC
This device complies with Part 15 of the FCC rules. Opera-
tion is subject to the following two conditions:
(1) This device may not cause harmful interference.
(2) This device must accept any interference received, in-
cluding interference that may cause undesired operation.
Any changes or modifications not explicitly approved by
Satel could cause the device to cease to comply with FCC
rules Part15, and thus void the user's authority to operate
the equipment.
Radio frequency exposure:
The device contains a radio transmitter and receiver. During
communication the device receives and transmits radio fre-
quency (RF) electromagnetic fields (microwaves) in the fre-
quency range of 2400MHz to 2483.5MHz.
RF Exposure Statement:
This equipment should be installed and operated with a min-
imum distance of 20cm between the radiator and your
body.
This transmitter must not be co-located or operating in con-
junction with any other antenna or transmitter.
This device contains:
FCC ID: YG3RAD2400A
Industry Canada (IC)
Operation is subject to the following two conditions: (1) this
device may not cause interference, and (2) this device must
accept any interference, including interference that may
cause undesired operation of the device.
This device has been designed to operate with an antenna
having a maximum gain of 9dBi.
Having a higher gain is strictly prohibited per regulations of
Industry Canada. The required antenna impedance is
50ohms.
To reduce potential radio interference to other users, the an-
tenna type and its gain should be so chosen that the equiv-
alent isotropically radiated power (EIRP) is not more than
that permitted for successful communication.
This device contains:
IC certificate: 4720B-RAD2400A
INDUSTRIAL CONTROL EQUIPMENT FOR HAZARD-
OUS LOCATIONS 45FP
A This equipment is suitable for use in ClassI, Zone2,
IIC T4 and ClassI, Division2, Groups A, B, C,D T4A
hazardous locations or non-hazardous locations only.
B WARNING - EXPLOSION HAZARD - DO NOT DIS-
CONNECT EQUIPMENT UNLESS POWER HAS
BEEN SWITCHED OFF OR THE AREA IS KNOWN
TO BE NON-HAZARDOUS.
C WARNING - EXPLOSION HAZARD - SUBSTITU-
TION OF COMPONENTS MAY IMPAIR SUITABILITY
FOR CLASS 1, DIVISION 2.
D These devices are open-type devices that are to be in-
stalled in an enclosure suitable for the environment
that is only accessible with the use of a tool.
E WARNING - Exposure to some chemicals may de-
grade the sealing properties of materials used in relays
within this device.
F WARNING - EXPLOSION HAZARD - S-PORT IS FOR
MAINTENANCE AND PROGRAMMING ONLY AND
SHOULD ONLY BE USED WHEN THE AREA IS
KNOWN TO BE NON-HAZARDOUS.
NOTE: Interference
This equipment has been tested and found to
comply with the limits for a Class A digital de-
vice, pursuant to part 15 of the FCC rules.
These limits are designed to provide reason-
able protection against harmful interference
when the equipment is operated in a commer-
cial environment. This equipment generates,
uses and can radiate radio frequency energy
and, if not installed and used in accordance
with the instruction manual, may cause harm-
ful interference to radio communications. Op-
eration of this equipment in a residential area
is likely to cause harmful interference, in
which case, the user will be required to correct
the interference at his own expense.
SATEL-LP24
106915_en_00 SATEL 9
6 Installation
6.1 Structure
Figure 1 Function elements
6.2 Basic circuit diagram
Figure 2 Basic circuit diagram
NOTE: electrostatic discharge!
The device contains components that can be
damaged or destroyed by electrostatic dis-
charge. When handling the device, observe
the necessary safety precautions against
electrostatic discharge (ESD) according to
EN 61340-5-1 and IEC 61340-5-1.
+
2
4V
RS
S
I+
RS
S
I-
A
N
T
C
O
M
1
N
O
1
N
C
1
R
X
T
X
G
N
D
D
(A
)
D
(B
)
Reset
RAD-ID
S.PORT
8
8
PWR
DAT
ERR
RX TX
0
V
+
2
4
V
0
V
RS
S
I+
RS
S
I-
2
1
3
4
5
7
6
9
11
12
17
16
13
15
14
10
8
Pos. Designation
1 RSMA antenna connection (socket)
2 Test output RSSI (0...3 V DC) for evaluation of the
wireless signal strength
3 Device supply (+24 V DC, GND)
4 12-pos. programming interface (S-PORT)
5 RAD ID address setting via thumbwheel
6SET button
7 Connection option for TBUS DIN rail connector
8DIN rail
9 Metal foot catch for DIN rail fixing
10 Connection terminal block RS-485 interface
11 Connection terminal block RS-232 interface
12 Relay output with PDT contact (floating)
13 RS-232/485 serial interface status LED (RX/TX)
14 LED bar graph for displaying the wireless signal
strength
15 ERR status LED, red (communication error)
16 DAT status LED, green (BUS communication)
17 PWR status LED, green (supply voltage)
RF
4.1
4.2
D(A)
D(B)
RS485
RAD-ID
S-Port
1.2
1.1
+24 V
0V
2.1
2.2
RSSI+
RSSI-
U
IFS
IFS
µC
6.1
6.2
6.3
NC
1
NO
1
COM
1
DC
DC
5.1
5.2
5.3
RX
TX
RS232
GND
SATEL-LP24
106915_en_00 SATEL 10
6.3 Display and diagnostic elements
The wireless module indicates the operating states with nine
LEDs.
Figure 3 Display and diagnostic elements
PWR LED
The green PWR LED indicates the supply voltage status.
OFF No supply voltage
ON Supply voltage OK
DAT LED
The green DAT LED indicates the bus communication sta-
tus.
OFF No communication
Flashing Configuration mode
ON Cyclic data communication
ERR LED
The red ERR LED indicates the error status.
OFF No error
Flashing Slow
(1.4Hz)
Wireless module in I/O data
mode (wire in/wire out):
double assignment of the I/O MAP
address, missing input module,
missing output module,
modified RAD ID
Wireless module in PLC/Mod-
bus RTU mode:
double assignment of the I/O MAP
address, modified RAD ID,
no Modbus communication
Fast
(2.8Hz)
Wireless connection interrupted
ON Local bus error
RAD-ID
SPORT
PWR
DAT
ERR
RX TX
0
1
set
D(A)
D(B)
RX
COM
1
TX
No
2
GND
NC
1
+24 V
RSSI
+
0V
ANT
RSSI
-
SATEL-LP24
106915_en_00 SATEL 11
LED bar graph
The LED bar graph indicates the receive signal strength.
LED bar graph - light sequence
The light sequence from bottom to top signalizes a firmware
update or that the wireless module is in write mode for the
memory stick.
LED bar graph - flashing
The devices are too close to each other.
As the full transmission power and the reception amplifier
are activated by default, signals may be superimposed.
Increase the distance between devices.
TX LED
The green TX LED indicates communication (transmit data)
with the RS-232/RS-485 interface.
From firmware version 1.70: in I/O data mode, the TX-LED
on the wireless master flashes (RAD-ID=01). This indicates
that the wireless master continually emits search requests to
RS-485 stations.
RX LED
The green RX LED indicates communication (receive data)
with the RS-232/RS-485 interface.
SET button
The SET button is used to confirm a station change, without
performing a power up.
After making any change, press the SET button for one sec-
ond to apply the settings. The DAT LED starts flashing.
When the DAT LED is permanently on this means that read
in has been completed.
Station changes:
– RAD ID address of the wireless module changed
– I/O MAP address of extension modules changed
– I/O extension module added
– I/O extension module removed
– Memory stick used
–SATEL-LP-CONF stick used
Bar
graph
LEDs Receive signal RSSI
(in V)
All 4 LEDs
light up
Connection with max-
imum receive signal
2.5 ... 3 V
16k -70dBm
125k -65dBm
250k -60dBm
Yellow and
2 green LEDs
light up
Connection with very
good receive signal
2 ... 2.5 V
16k -80dBm
125k -75dBm
250k -70dBm
Yellow and
1 green LEDs
light up
Connection with good
receive signal
1.5 ... 2 V
16k -90dBm
125k -85dBm
250k -80dBm
Yellow LED
lights up
Connection with low
receive signal
1 ... 1.5 V
16k LINK
125k LINK
250k LINK
OFF No connection 0V
The antenna is mounted outside the control
cabinet/building. Observe the installation in-
structions for the antenna used. See also
"Safety regulations and installation notes".
SATEL-LP24
106915_en_00 SATEL 12
RSSI LED bar graph
You can read the RSSI values (signal strength received) via
the serial interface of the master wireless module by
Modbus/RTU commands.
Figure 4 Example of point-to-point connection
In a point-to-point connection, the LED bar graph is active on
the master and on the repeater/slave. The same signal
strength is displayed on both modules.
Figure 5 Example of multipoint-to-point connection
In a wireless network with more than one repeater/slave,
only the yellow LED on the master is permanently on. The
signal strength is displayed on the repeaters/slaves. The
signal strength is always related to the wireless module
which is directly connected.
RF link relay
The RF link relay in the transceiver diagnoses the state of
the wireless connection. It picks up when the wireless con-
nection is established. If no data packets are received cor-
rectly over a period of 10seconds, the relay drops out again.
It picks up again automatically when the wireless connection
is re-established.
The RF link relay has been designed as a PDT contact.
RSSI test socket
A voltage measuring device can be connected to the RSSI
test socket to measure a voltage, which provides informa-
tion about the received wireless signal. Using the table
shown below the LED bar graph, the received signal
strength can be determined using the voltage value. This
can be useful when positioning and aligning the antenna, for
example.
Master
Repeater /
Slave
RAD-ID
Reset
+24V
0V
RSSI-
RSSI+
ANT
SPORT
0 1
Pwr
Dat
Err
RXTX
D(A) D(B)
GND
RX
CO
1
NC
1
CO
2
TX
RAD-ID
Reset
+24V
0V
RSSI-
RSSI+
ANT
SPORT
0 2
Pwr
Dat
Err
RXTX
D(A) D(B)
GND
RX
CO
1
NC
1
CO
2
TX
Master
Repeater /
Slave
Repeater /
Slave
RAD-ID
Reset
+24V
0V
RSSI-
RSSI+
ANT
SPORT
0 2
Pwr
Dat
Err
RXTX
D(A) D(B)
GND
RX
CO
1
NC
1
CO
2
TX
RAD-ID
Reset
+24V
0V
RSSI-
RSSI+
ANT
SPORT
0 1
Pwr
Dat
Err
RXTX
D(A) D(B)
GND
RX
CO
1
NC
1
CO
2
TX
RAD-ID
Reset
+24V
0V
RSSI-
RSSI+
ANT
SPORT
0 3
Pwr
Dat
Err
RXTX
D(A) D(B)
GND
RX
CO
1
NC
1
CO
2
TX
The RF link relay can be used as a fault mes-
sage contact to indicate the failure of the wire-
less connection to the controller.
SATEL-LP24
106915_en_00 SATEL 13
6.4 Assembly/removal
Connection station with I/O extension modules
Up to 32different I/O extension modules can be connected
to every wireless module via the DIN rail connector (see ac-
cessories). Data is transmitted and power is supplied to the
I/O extension modules via the bus foot.
Figure 6 SATEL-LP connection station with up to
32I/O extension modules
Figure 7 Mounting and removing
Assembly
When using the device in a connection station, use the
17.5 mm wide DIN rail connector supplied. Only use the DIN
rail connector in connection with 24 V DC devices.
• Connect the DIN rail connectors together for a connec-
tion station.
• Push the connected DIN rail connectors into the DIN
rail.
• Place the device onto the DIN rail from above. Ensure
the device and DIN rail connector are aligned correctly.
• Holding the device by the housing cover, carefully push
the device towards the mounting surface so that the de-
vice bus connector is securely fixed onto the DIN rail
connector.
• Once the snap-on foot has been audibly snapped onto
the DIN rail, check that it is fixed securely. The device is
only mechanically secured via the DIN rail.
• Connect the desired number of I/O extension modules
to the wireless module via the DIN rail connector.
• Install the device in suitable housing to meet the re-
quirements for the protection class.
• During startup, check that the device is operating,
wired, and marked correctly.
Removing
• Use a suitable screwdriver to release the locking mech-
anism on the snap-on foot of the device.
• Hold onto the device by the housing cover and carefully
tilt it upwards.
• Carefully lift the device off the DIN rail connector and the
DIN rail.
The I/O extension modules must only be
mounted to the right of the wireless module.
SATEL-LP24
106915_en_00 SATEL 14
6.5 Connecting the cables
Figure 8 Connecting the cables
• Crimp ferrules to the wires.
Permissible cable cross section: 0.2...2.5mm².
• Insert the wire with ferrule into the corresponding con-
nection terminal block.
• Use a screwdriver to tighten the screw in the opening
above the connection terminal block.
Tightening torque: 0.6Nm
6.6 Serial pin assignment
Connect the I/O device to the wireless module via the re-
quired serial interface.
Shielding
• Connect the shield connection of the RS-485 bus cable
correctly via an external shield connection clamp.
Choose the type of shield connection according to the type
of interference expected:
– Firstly, connect the shield on one side. This suppresses
electrical fields.
– To suppress disturbances caused by alternating mag-
netic fields, connect the shield on both sides. When do-
ing so, the ground loops must be taken into account:
galvanic disturbances along the reference potential can
interfere with the useful signal, and the shielding effect
is reduced.
– If several devices are connected to a single bus, the
shield must be connected to each device (e.g.,by
means of clamps).
– Connect the bus shield to a central PE point using short,
low-impedance connections with a large surface area
(e.g.,by means of shield connection clamps).
Activating/deactivating the termination network
The wireless module is operated on a 2-wire bus line. For
correct operation of the bus system, termination networks
are required for the RS-485 bus connection.
• Terminate an RS-485 bus cable at both bus ends. To do
so, verify the position of the wireless module on the
RS-485 bus cable and set the required operating mode
via the DIP switch.
Figure 9 DIP switches
Parallel operation of the interfaces is not pos-
sible.
NOTE: damage to the interface
A faulty connection of the shield in combina-
tion with permanent external interferences
can cause damage to the RS-485 interface.
Observe the polarity of the RS-485 2-wire ca-
ble and ensure that the shield connection is
connected correctly.
A
B
8
8
PWR
DAT
ERR
DIP
Operating mode Termination
network
1 2
RS-485 termination
device
ON ON ON
RS-485 device OFF OFF OFF
+24V
RSSI+ RSSI-
A
NT
COM
1
NO
1
NC
1
RX TX GND
D
(
A
)
D
(
B
)
Reset
RAD-ID
S.PORT
8
8
P
W
R
DAT
E
R
R
R
X
TX
0V
+24V
RS
SI+
RS
SI-
0V
1.2 1.1
2.2 2.1
6.3 6.2
5.3 5.2
6.1
5.1
4.2
4.1
D
C
DC
IFS
IFS
RF
S
-P
o
rt
R
AD
-ID
0
1
RS485
Rs232
0V
+24V RSS
I-
RSSI+
N
C
1
N
O
1
C
OM
1
G
ND
TX R
X
D
(B)
D(A)
µC
O
F
F
O
N
DIP S1 2 1
RS485 Terminate “OFF“ OFF OFF
RS485 Terminate “ON“ ON ON
2 1
c 12
21
OFF
ON
SATEL-LP24
106915_en_00 SATEL 15
RS-485 pin assignment
In RS-485 mode, an RS-485 network with several I/O de-
vices can be created. Use a twisted pair bus cable to con-
nect the I/O devices. Fit this bus cable with a termination net-
work at the two furthest points of the RS-485 network.
• Connect the individual conductors of the data cable to
the plug-in screw terminal block (Figure 1, item 10).
• Make sure the signal assignment is correct.
Figure 10 RS-485 interface pin assignment
RS-232 pin assignment
In RS-232 mode, point-to-point connections can be estab-
lished.
• Connect the individual conductors of the data cable to
the plug-in screw terminal block (Figure 1, item 11).
• Make sure the signal assignment is correct.
Figure 11 RS-232 interface pin assignment (DTE-DTE)
Figure 12 RS-232 interface pin assignment (DTE-DCE)
Antenna connection
The wireless module has an RSMA antenna connection
(socket) for connecting an external antenna.
A wide selection of antennas and antenna cables can be
found in the "Ordering data" section on page3.
Figure 13 Antenna connection
The RS-232 interface is a DCE (data commu-
nication equipment) type.
The wireless module may only be connected
to devices, which meet the requirements of
EN60950.
D(B)
D(A)
+
-
RS-485
D(B) + (4.2)
D(A) - (4.1)
RX (5.1)
TX (5.2)
GND (5.3)
D-SUB-9
RX (2)
TX (3)
GND (5)
PC (DTE)
RS-232
RX (5.1)
TX (5.2)
GND (5.3)
D-SUB-9
RX (2)
TX (3)
GND (5)
PLC (DCE)
RS-232
SATEL-LP24
106915_en_00 SATEL 16
7 Startup and configuration
By default, all wireless modules are configured in the same
way.
Default settings
Operating mode: I/O data mode (wire in/wire out)
For simple I/O data applications (wire in/wire out), address-
ing is carried out easily using a thumbwheel. This means you
can establish a wireless connection without any program-
ming effort.
For serial data transmission, PLC/Modbus RTU mode or
changes to the “default settings”, each wireless module
must be configured using the SATEL-LP-CONF configura-
tion and diagnostics software. See Section 7.5, “SATEL-LP-
CONF configuration and diagnostics software”.
If you operate the system in an environment with more than
one network in the 2.4 GHz band or other networks (suchas
WLAN), you can use a configuration memory (SATEL-LP-
CONF stick) or make advanced settings via the SATEL-LP-
CONF software.
7.1 Resetting to the default settings
• Disconnect the device from the supply voltage.
• Hold down the SET button located on the front of the de-
vice.
• Switch the supply voltage back on.
• Press and hold the SET button until the DAT LED flash-
es.
Alternatively, you can reset the device to the default settings
using the SATEL-LP-CONF software.
7.2 Setting the station address (RAD-ID)
You address the devices in a wireless network via the
thumbwheel on the front of the wireless module.
Firstly, set the desired station address with the yellow
thumbwheel on the wireless module. This results in an initial
functional configuration. There must be one master (ad-
dress “01”) and at least one repeater/slave (address “02 to
99”) in a network.
Configuring two wireless modules with the same address
will result in a network that does not function correctly.
The following settings can be made using the thumbwheel:
Data communication is only possible using
I/O extension modules.
Wireless interface
Net ID: 127
RF band: 4
Encryption: OFF
Network structure: Mesh
Device type: Repeater/slave
Blacklisting: Channel 6 (WLAN)
Data rate of the wireless
interface: 125 kbps
Reception amplifier: Activated
Transmission power: 18 dBm
Each address in a network must be unique.
Thumbwheel Description
01 Master address for networks with
repeaters (mesh networks)
02 - 99 Repeater/slave addresses for networks
with repeaters (mesh networks)
*1 Master address for networks without
repeaters (star networks)
*2-*9 Slave address for networks without
repeaters (star networks)
00 Not permitted
** Addressing wireless modules using the
SATEL-LP-CONF configuration and
diagnostics software (address 1 ... 250)
Setting the address via the thumbwheel has
priority over setting the address via the SA-
TEL-LP-CONF configuration and diagnostics
software.
After making any change to the module ad-
dress, press the SET button for one second to
apply the setting.
SATEL-LP24
106915_en_00 SATEL 17
7.3 Transmission capacity
7.4 Data transmission speed of the wireless inter-
face
The range is an important parameter in industrial wireless
applications, especially in outdoor applications.
Even in cases where long ranges do not have to be covered,
good receiver sensitivity enables transmission in harsher
outdoor conditions, e.g.,when there is no direct line of sight.
The receiver sensitivity determines the signal amplitude
which can just about be received by the wireless module.
The lower the data transmission speed of the wireless inter-
face, the higher the receiver sensitivity and thereby the
bandwidth.
You can achieve transmission within the kilometer range
using the wireless module if the following conditions are ful-
filled:
– Suitable gain antennae are used
– Line of sight
– Adherence to the Fresnel zone
7.5 I/O data transmission
In order to enable the transmission of signals, you must as-
sign a corresponding output module to the input module.
The following conditions must be met:
Wireless module in I/O data mode (default setting)
Use the white thumbwheel on the I/O extension module to
set the I/O MAP address (01...99).
The input device must be provided with the same I/O MAP
address as the assigned output device at the other station
(I/O mapping). The I/O MAP address may only appear once
in the network. Exception: outputs with the same address
can occur multiple times in different stations on the network.
Once the desired number of I/O extension modules have
been connected to the wireless module via the DIN rail con-
nector, the active configuration of the station must be read in
via the SET button (item 6 in Figure 1) on the front of the
wireless module.
Observe the maximum permissible radiated
transmission power at the antenna (EIRP, see
table).
This is determined based on:
Device transmission power + antenna gain
- cable attenuation.
Reduce the device transmission power via the
SATEL-LP-CONF software, if necessary.
Adjust the data transmission speed of the
wireless interface to the respective applica-
tion using the SATEL-LP-CONF software (de-
fault setting=125kbps).
Data trans-
mission
speed
[kbps]
Typical
receiver
sensitiv-
ity [dBm]
EIRP: max.
radiated
power
[dBm]
Potential dis-
tance that can
be covered
with line of
sight and a
system
reserve of
12dB [m]
250 -93 20
(Europe: 19)
1000
125 -96 20
(Europe: 18)
3000
(Europe: 2000)
16 -106 20
(Europe: 11)
5000
(Europe: 3000)
You can connect a maximum of 32 I/O exten-
sion modules to a station.
To apply the configuration, press the SET but-
ton for one second in the event of the following
changes:
– RAD ID address of the wireless module
changed
– I/O MAP address of extension modules
changed
– I/O extension module removed
– I/O extension module added
SATEL-LP24
106915_en_00 SATEL 18
7.6 SATEL-LP-CONF configuration and diagnostics
software
SATEL-LP-CONF configuration software is required for spe-
cial settings.
This can be downloaded at www.satel.com.
• Use the SATEL-LP-PROG (Order No. YC0520) USB
cable for this.
7.7 Serial data transmission
For serial data communication, you have to activate the “se-
rial data” mode in the SATEL-LP-CONF software. Set the in-
terface parameters of the RS-232 or RS-485 interface such
as data rate, parity, stop bits, and data bits according to the
connected application.
7.8 PLC/Modbus RTU mode
Activate the PLC/Modbus RTU mode in the SATEL-LP-
CONF software.
In PLC/Modbus RTU mode (I/O to serial), you can wirelessly
connect I/O modules directly to a controller. The wireless
module provides an RS-232 or RS-485 interface for this pur-
pose.
In PLC/Modbus mode, the wireless master works as a Mod-
bus slave and has its own Modbus address. The Modbus
address is a unique address, which is only assigned for the
wireless master (RAD-ID=1). You can select an address
1...247.
You can connect I/O extension modules to each wireless
device in the network. A wireless network can have a maxi-
mum of 99 I/O extension modules.
Use the white thumbwheel on the I/O extension module to
set the I/O MAP address (01...99). Each I/O MAP address
may only appear once in the network. Output modules and
input modules must have different I/O MAP addresses. Ex-
ception: outputs with the same address can occur multiple
times in different stations on the network.
Input and output data is stored in a Modbus Memory Map in
the master wireless module. The process data tables can be
found in the SATEL-LP user manual.
A PC with a Windows operating system is re-
quired in order to use the configuration and di-
agnostics software.
The PLC/Modbus RTU mode of the wireless
module is available for firmware versions1.30
or later. If necessary, start a firmware update
using the SATEL-LP-CONF software (ver-
sion2.03 or later).
SATEL-LP24
106915_en_00 SATEL 19
7.9 Behavior of the input and output modules in the
event of an interrupted wireless connection
DIP switches on the I/O extension modules can be used to
set how the analog and digital outputs should behave in the
event of interrupted wireless connection.
"HOLD" DIP switch
If the wireless connection is interrupted, the outputs of the
I/O extension modules retain their last value or state.
"RESET" DIP switch
If the wireless connection is interrupted, the outputs of the
I/O extension modules are reset (output value is set to 0).
7.10 Saving the wireless network
Using a SATEL-LP-CONF stick (see accessories in the
"Ordering data" section on page 3), you can configure a
unique and secure network. This enables the parallel oper-
ation of multiple networks (using different RF bands).
Insert the SATEL-LP-CONF stick into the S-PORT of the
wireless module. After accepting, the information is then
loaded into the internal memory.
Figure 14 Configuration via SATEL-LP-CONF stick
1 SATEL-LP-CONF...
2 Status LEDs
3 SET button
The SATEL-LP-CONF stick contains: RF band (3, 5 or 7)
and a unique network ID
The SATEL-LP-CONF stick is used as a network key.
Reading in the device configuration using the
SATEL-LP-CONF stick
• Insert the SATEL-LP-CONF stick into the S-PORT of
the wireless module.
• Press the SET button on the wireless module for one
second.
• Parameter read in is started.
• When the DAT LED lights up once, this means that the
read in process has been completed. The new parame-
ters are activated.
• Remove the SATEL-LP-CONF stick from the wireless
module.
You have to configure each individual network
device. To this end, you only need one
SATEL-LP-CONF stick for all wireless mod-
ules in the network.
After configuration, you can remove the
SATEL-LP-CONF stick from the wireless
module.
SATEL-LP24
106915_en_00 SATEL 20
7.11 Copying device settings to new network devic-
es
Your individual configuration data can be saved to a memory
stick (SATEL-LP-MEMORY, see accessories in the "Order-
ing data" section on page 3), e.g.,to transfer the same con-
figuration to other devices.
Common network parameters:
–Operating mode
– Network ID
–RF band
– Data rate of the wireless interface
–Encryption
– Network type
Individual device parameters:
– Station name
–RAD ID
– Transmission power
– List of permitted connections
– Receive preamplifier ON/OFF
– Serial interface parameters
Writing a full copy of the individual device parameters
and common network parameters to the memory stick
(SATEL-LP-MEMORY):
• Confirm by pressing the SET button on the wireless
module for at least six seconds.
• The four RSSI bar graph LEDs start a light sequence
from bottom to top.
• Insert the memory stick into the S port of the wireless
module.
• The copying of parameters is started automatically.
• Wait until the RSSI bar graph LEDs reach the static
state or the light sequence stops.
The write process has been completed.
• Remove the memory stick from the wireless module.
Reading in common network parameters via the mem-
ory stick:
This function enables common network parameters to be
read in from the memory stick. This means that all network
devices can have the same network parameters.
• Insert the memory stick into the S port of the wireless
module.
• Press the SET button on the wireless module for one
second.
• Parameter read in is started.
• When the DAT LED lights up once, this means that the
read in process has been completed. The new parame-
ters are activated.
• Remove the memory stick from the wireless module.
Reading in a full copy of the individual device parame-
ters and common network parameters via the memory
stick:
This function enables all individual device parameters and
common network parameters to be read in from the memory
stick. This means that a full copy of devices can be created.
This can be used, forexample, to create a backup copy of a
device for device replacement.
• Insert the memory stick into the S port of the wireless
module.
• Confirm by pressing the SET button on the wireless
module for at least six seconds.
• Parameter read in is started, the DAT LED flashes.
• Wait until the DAT LED is no longer flashing. The read
in process has been completed and the new parame-
ters are activated.
• Remove the memory stick from the wireless module.
If an error is detected while saving or subse-
quently checking the data, the DAT and ERR
LEDs flash simultaneously.
SATEL-LP24
106915_en_00 21
Satel Oy • Meriniitynkatu 17, P.O. Box 142 • FI-24101 Salo, Finland
Tel. +358 2 777 7800 • info@satel.com • www.satel.com
8Process data
You can read the RSSI values (signal strength received) via
the serial interface of the master wireless module by
Modbus/RTU commands.
The RSSI values of all wireless modules are within the ad-
dress area 35001...35250.
RSSI signal and error code register
Bit08 = error on IFS bus
If an error occurs on the IFS bus, the register value =1 (e.g.,
local bus error, as the input or output module is separated
from the DIN rail connector).
If no errors are present on the IFS bus, the register value =0.
– Bits 9...15 are reserved.
– Values < 255 indicate the RSSI value in -dBm.
– The value 255 means that the RSSI value is invalid or
the device cannot be reached.
Address space 35001...35250
Modbus function code fc04
Address Wireless module High byte Low byte, RSSI values
 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
35001 RSSI - RAD ID=1 (master) Reserved IFSXXXXXXXX
35002 RSSI - RAD ID=2 Reserved XXXXXXXX
... ... Reserved XXXXXXXX
35250 RSSI - RAD ID=250 Reserved XXXXXXXX