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8) Connection of
ModBus
The IPC5000 with the optional communication provides an RS 485 communications ports
with ModBus RTU protocol support.
Fig. 2.7.9 RS422/485/Modbus Communications Option Connections (3-Wire shield)
3-Wire
Shielded
SG
SDB
SDA
RDB
RDA
MODBU
S
Master
RX+/TX+
RX-/TX-
SG
To other communication IPC5000
(Maximum 31)
* 120 Ohm Resistor on Last Leg
120 Ohm
Resistor
Do not run these lines in
the same conduit as AC
power
Use shielded
twisted pair cables