7SG11 Argus Technical Reference
©2013 Siemens Protection Devices Limited
P20007 Page 70 of 71
Laptop computer
P300007 Communications.vsd / Sigma 1
Sigma 1
F
ro
n
t
R
S
2
3
2
Control
System
up to 29 slaves (relays)
Rx
Tx
Rx
Tx
Rx
Tx
master
link
...
Auxiliary supply
Tx
Rx
Tx
Rx
Figure 4.3-2
Communication to Multiple Argus Relays from Control System and Laptop with Sigma 1
and Fibre-optic Star Network
A
Laptop computer
P300007 Communications.vsd / RS485 - RS232
R
S
2
3
2
RS485
A
B
B
Figure 4.3-3
Communication to Argus Relay using RS485 – RS232 converter (Local Connection)
Laptop computer
P300007 Communications.vsd / RS485 - Multidrop
R
S
2
3
2
RS485
A
B
A
B
A
B
A
B
A
A
B
B
Figure 4.3-4
Communication to Argus Relay using RS485/RS232 converter (Multidrop Connection)
4.3.11 Glossary
Baud Rate
See bits per second.
Bit
The smallest measure of computer data.
Bits Per Second (BPS)
Measurement of data transmission speed.
Data Bits