1/2017
SATEL technical bulletin
SATELLAR
SATELLAR and IEC 104 / 101 conversion
IEC provide a method for supervising and data acquisition in electrical engineering and power system
automation applications. It includes several categories including 101 and 104 protocols. IEC 101 provides
companion standards is a standard for power system monitoring, control & associated communications
for telecontrol, teleprotection, and associated telecommunications for electric power systems. IEC 104 is
an extension of IEC 101 protocol with the changes in transport, network, link & physical layer services to
suit the complete network access for using TCP/IP interface.
IEC 104-101 includes an interface for enabling IEC 104/101 conversion and 101 and 104 message handling
and routing functionality at SATELLAR. When this is set on, CU can receive IEC 104 messages from IP
interface and send via dened serial interface as IEC 101 message to their target and correspondingly
convert the 101 messages to 104 messages and send them to their target.
SATEL technical bulletin
SATELLAR
2
In basic scenario master end is acting as a router and substations provide interface to IEC conversion. User
enables IEC by setting IEC to state ON at remote substation SATELLAR which is connected to some slave
device(s) and is having routes to Satellar at master end which is connected to SCADA. So in this scenario
master does not need to have IEC enabled. Master side is connected to SCADA via Ethernet and substations
are connected to slave device with serial connection, either D9 connector in SATELLAR or with USB-Serial
dongle connected Central Unit. This is selected in user interface. The port where IEC 104 service answers at
substations is 2404.
IEC interface includes some IEC traic related parameters, generic parameters such as denitions of serial
interface and some denitions related to usage of service.
Available settings:
Name
Description Available values
(default italic)
Subunit NMS ID
IEC Status of IEC service, o
or on
O, On 1 1.3621
T1 Timeout Timeout value for T1
time control by IEC
specication as sec-
onds. If no response
has been received to
I/S/U message sent to
master by this time
limit, sub-station/slave
disconnects
0-65535 (10) sec-
onds
1 1.3622
T3 Timeout Timeout value for T3
time control by IEC
specication as sec-
onds. If no I/S/U mes-
sage has been received
from master by this
given time, sub-station/
slave sends TESTFR
(Test Frame) to master.
0-172800 (500)
seconds
1 1.3623
SATEL technical bulletin
SATELLAR
3
Name
Description Available values
(default italic)
Subunit NMS ID
IEC 101 Poll
timeout
IEC 101 side polling
timeout as in millisec-
onds. This value sets
the time limit for having
response for IEC 101
poll messages.
0-65535 (3000) milli-
seconds
1 1.3624
Error Object
Address
This value is used with
error messages in
case polling of some
sub-station/slave is
not working. If polling
of some sub-station is
not having responses,
IEC service in Satellar
sends an alert status
message to master with
ASDU-address of that
station and this object
address.
0- 4294967295 (500) 1 1.3625
Device port Selects the interface
that is used for IEC 101
traic serial communi-
cation with sub-stations
D9, USB-A 1 1.3626
Port Rate IEC 101 traic serial port
rate
1200, 2400, 4800,
9600, 19200, 38400
bps
1 1.3627
Port Data Bits Data Bits of IEC 101
traic port
7 bits, 8 bits 1 1.3628
Port Parity Parity of IEC 101 traic
port
No parity check,
Even, Odd
1 1.3629
Port Stop Bits Stop Bits of IEC 101
traic port
1 bit, 2 bits 1 1.3630
Link Address
Length
Length of device or
station address
0 bytes, 1 byte, 2
bytes
1 1.3631
ASDU Address
Length
ASDU denotes sepa-
rate segments and its
address inside a device.
This parameter denes
the length of this ad-
dress eld.
1 byte, 2 bytes 1 1.3632
Object Address
Length
Object address provides
address of the informa-
tion object element.
This denes the length
of that address.
1 byte, 2 bytes,
3 bytes
1 1.3633
SATEL technical bulletin
SATELLAR
4
Name
Description Available values
(default italic)
Subunit NMS ID
Cause-of-transmis-
sion Length
Cause of transmission
indicates causes of
data transmissions like
spontaneous or cyclic.
This denes the length
of that eld.
1 byte, 2 bytes 1 1.3634
Primary Remote IP
Address
Primary remote address
i.e. IP address that is
used for communication
to master in the rst
instance. When dened,
connections only from
this dened IP are ac-
cepted.
IP address (0.0.0.0
i.e. any address)
1 1.3635
Redundant Remote
IP Address
Redundant remote ad-
dress i.e. IP address that
is used for communica-
tion to master in case
primary IP is not availa-
ble. When dened, con-
nections only from this
dened IP are accepted
(in side of primary IP).
Connections cannot be
simultaneous. In case
connection from redun-
dant IP is done when
connection from prima-
ry is ongoing, allowed
IP primary connection
is ended. As a default
value is 0.0.0.0 which
means that redundant
IP is ignored i.e. it does
not mean accepting all
addresses.
IP address (0.0.0.0
i.e. any address)
1 1.3636
Local IP Address Address that answers
to IEC 104 service
requests. Value can be
selected from any of
existing addresses e.g.
192.168.1.1 eth0. To set
responding from any
of existing addresses,
value is set to either All
Local Addresses.
Available IPs in
device (All local
addresses i.e. no
limitation)
1 1.3637
SATEL technical bulletin
SATELLAR
5
Name
Description Available values
(default italic)
Subunit NMS ID
2nd Primary Re-
mote IP Address
2nd Primary remote ad-
dress is IP address that
is used for communica-
tion to second or alter-
native master in the rst
instance. Second master
is a possible alternative
IEC service instance.
This way user can dene
two service instanc-
es that are limited to
answer to requests
only from dened
IP addresses. When
dened, connections
only from this dened
IP are accepted. Default
value 0.0.0.0 means
that this service is not
started at all. To start
second service instance
this must be dened to
some other than 0.0.0.0
and also rst service
instance must have at
least primary IP dened
to something else than
0.0.0.0.
IP address (0.0.0.0
i.e. any address)
1 1.3638
2nd Redundant
Remote IP Address
2nd Redundant remote
address is IP address
that is used for redun-
dant communication to
second or alternative
master in case primary
IP is not used.
When dened, con-
nections only from this
dened IP are accepted
(in side of primary IP).
Connections cannot be
simultaneous. In case
connection from redun-
dant IP is done when
connection from prima-
ry is ongoing, primary
connection is ended.
Default value is 0.0.0.0
which means that
redundant IP is ignored
i.e. it does not mean
accepting all addresses.
IP address (0.0.0.0
i.e. any address)
1 1.3639
SATEL technical bulletin
SATELLAR
6
Name
Description Available values
(default italic)
Subunit NMS ID
2nd Local IP Ad-
dress
Address that answers
to alternative or second
IEC 104 service requests.
Value can be set to any
of existing addresses. To
set responding from any
of existing addresses,
value is set to All Local
Addresses. This is used
only if second master
altogether is started.
Available IPs in
device (All local
addresses i.e.no
limitation)
1 1.3640
IEC 101 Station User can manually cre-
ate list of IEC stations
and modify that list or
they are added auto-
matically when stations
are called. Adding is
done with Add IEC sta-
tion button. If user adds
stations manually, only
those station numbers
are handled, others are
discarded.
0-65535 (No sta-
tions)
1 1.3649
SATEL technical bulletin
SATELLAR
7
IEC traic related settings are generic IEC parameters but denitions related to usage of service are
more related to this specic device. This parameter set includes two primary and redundant remote
IPs and local IP addresses. As a default, all primary and redundant remote IPs are set as 0.0.0.0 and
local IP addresses are set to state All Local Addresses.
Remote IP value 0.0.0.0 means that service accepts connection requests from any IP that connect to
device. If Primary Remote IP is in that state, then other Remote IP parameters are not used. If user
denes Primary Remote IP to something else than 0.0.0.0 it means three things. First, it limits the
scope of addresses this main master responds to only to this address. Second, it makes possible to
start alternative master by dening some other IP than 0.0.0.0 to 2nd Primary Remote IP Address.
So if e.g. Primary Remote IP Address is dened to 192.168.1.100 and 2nd Primary Remote IP Ad-
dress 192.168.1.200, there are two processes running which can respond to these and only to these
addresses simultaneously.
Third thing is that aer dening of primary IP, service can also use redundant IP if it is dened to
something else than 0.0.0.0. Redundant IP oers a possibility to use second IP for service. If connec-
tion was rst made from primary IP and then from redundant, connection to primary IP is discon-
nected and redundant IP connection established.
Local IP Address parameters are used to limit the connection only to some interface or IP at CU. De-
fault All Local Addresses means that service can use any IP available in device for connection. This
means that IPs where it can respond to requests include all IP address currently set to device i.e.
Ethernet IPs, radio (tun) IP and possible VLAN IPs. In case some other option (i.e. some particular IP
and interface) is selected, then service responses only at that interface and IP.
List of available IEC 101 stations can be formed either automatically by addresses in messages send
by SCADA or they can be added manually. In case user adds the stations manually, only those sta-
tion numbers are handled, others are discarded.
