
IB-23C650M
INSTALLATION
Figure 3. Typical 4-Wire Modbus Network Connections with a
MODCELL Multiloop Processor as Master
120
120
RX -
RX+
Isolated +5Vdc
2034N RS-485 MODULE
(Module Locations 31 & 32)
Modbus Master
560
TERM
Switch
YES
TX-
TX+
RX-
RX+
S31
S32
1
2
1
2
Modcell Processor
All resistors are 0.25W.
2050R Controller
(Modbus Slave)
TX -
TX+
COM
120
120
Last
2050R
Other 2050R's
wired same way
without resistors.
7
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