Siemens Argus 7SR21 Technical Manual page 394

7SR220 Technical Manual
Setting Name
OFF
COM3 IEC60870-5-103
MODBUS-RTU
Protocol
DNP3
COM3 0 - 254 for IEC60870-5-103
Station 1 - 247 for Modbus RTU
Address 0 - 65534 for DNP3.0
75 110 150 300
COM3 600 1200 2400 4800
Baud Rate 9600 19200 38400
57600 115200
NONE
COM3
ODD
Parity
EVEN
COM3 LIGHT ON
Line Idle LIGHT OFF
COM3
ON
#1
OFF
Data Echo
Local
COM3
Local or Remote
Mode
Remote
USB or 9 pin male
D connector
Laptop computer
RS232 straight
through cable
Fig. 2-5 Additional (Optional) Rear RS485 + IRIG-B Connection to a PC
2.6 Optional Rear RS232 (COM3)
The following settings, on the COMMUNICATIONS MENU, must be configured when using the electrical RS232
Com3 interface.
Chapter 4 - Page 14 of 96
Range/Options Default Setting
IEC60870-5-103
0
19200
EVEN
LIGHT OFF LIGHT OFF
OFF OFF
Remote
RS485 Screened
twisted pair
© 2017 Siemens Protection Devices Limited
Notes
The protocol used
to communicate on
the standard RS485
connection.
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.
The baud rate set
on all of the relays
connected to the
control system must
be the same as the
one set on the master
device.
The parity set on
all of the relays
connected to the
control system must
be the same and in
accordance with the
master device.
Not applicable for
RS 485 or RS 232
option, set to OFF.
Not applicable for
RS 485 or RS 232
option, set to OFF.
Refer to Appendix
1, page 95, for
further explanation
7SR24
COMMS MODULE
IRIG-B
COM3
GND
TERM
B
A