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Control
System
Auxiliary supply
Laptop computer
Figure 4.3-2
Communication to Multiple Argus Relays from Control System and Laptop with Sigma 1
Laptop computer
Figure 4.3-3
Communication to Argus Relay using RS485 – RS232 converter (Local Connection)
Laptop computer
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
©2013 Siemens Protection Devices Limited
Sigma 1
and Fibre-optic Star Network
RS485
A
A
RS485
B
B
7SG11 Argus Technical Reference
Tx
master
link
Rx
Tx
Rx
...
up to 29 slaves (relays)
Tx
Rx
P300007 Communications.vsd / Sigma 1
A
B
P300007 Communications.vsd / RS485 - RS232
A
A
A
B
B
B
P300007 Communications.vsd / RS485 - Multidrop
P20007 Page 70 of 71
Rx
Tx
Rx
Tx
A
B
A
B
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