
Using the Modbus Ports
870USE10110 July 2004 117
Multimaster/
Slave Cabling
The following illustration shows components used in a multimaster/slave network.
Each Momentum module must include a processor adapter or option adapter with a
Modbus RS485 port.
Legend:
1
2
3
3
2
43
2
5
3
2
Slave Slave
Master Slave Master
Label Description
1 Terminating resistor plug 170 XTS 021 00
Color code red
2 Modbus RS485 connector T (DB9 base) 170 XTS 040 00
3 Modbus Plus / Modbus RS485 Short Interconnect Cable 170 MCI 020 10
Color code black
4 Modbus RS485 connector T (RJ45 base) 170 XTS 041 00
5 Terminating shunt plug 170 XTS 042 00
Color code blue
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