Siemens Argus 7SR22 - Page 395

Chapter 4 - Data Communications Definitions
© 2017 Siemens Protection Devices Limited Chapter 4 - Page 15 of 96
Setting Name Range/Options Default Setting Notes
COM3
Protocol
OFF
IEC60870-5-103
MODBUS-RTU
DNP3
IEC60870-5-103
The protocol used
to communicate on
the standard RS485
connection.
COM3
Station
Address
0 - 254 for IEC60870-5-103
1 - 247 for Modbus RTU
0 - 65534 for DNP3.0
0
An address within the
range of the relevant
protocol must be
given to identify the
relay. Each relay in a
network must have a
unique address.
COM3
75 110 150 300
The baud rate set
on all of the relays
600 1200 2400 4800
19200
connected to the
control system must
Baud Rate
9600 19200 38400
be the same as the
57600 115200 one set on the master
device.
The parity set on
all of the relays
COM3
Parity
NONE
ODD
EVEN
EVEN
connected to the
control system must
be the same and in
accordance with the
master device.
COM3
Line Idle
LIGHT ON
LIGHT OFF
LIGHT OFF LIGHT OFF
Not applicable for
RS 485 or RS 232
option, set to OFF.
COM3
Data Echo
#1
ON
OFF
OFF OFF
Not applicable for
RS 485 or RS 232
option, set to OFF.
COM3
Mode
Local
Local or Remote
Remote
Remote
Refer to Appendix
1, page 95, for
further explanation
Fig. 2-6 Additional (Optional) Rear RS232 + IRIG-B Connection to a PC
Pin Relay Function
1 Not Connected
2 Receive Data (RXD)
3 Transmit Data (TXD)
7SR24
COMMS MODULE
IRIG-B
COM3
USB
or
9
pin
male
D connector
Laptop
computer
RS232
cross
-
over
cable
or
RS232
to
USB
converter
cable