Micromod RetroPAK: SLC Installation Manual - Manual (Page 65)

SLC RetroPAK Controller
COMMUNICATIONS CONNECTIONS
47
Connections for a typical RS-232 Modbus network using the built-in circuit are shown in
Figure 5-4.
COM
TX
RX
RX
TX
COM
Personal Computer
or
Controller
MODBUS MASTER
Built-in connections use
communications Port 1. Locate
jumper as shown in Figure 5-2.
Caution. Disconnect power before wiring.
Refer to terminal connections.
!
to instrument ground
if PC is isolated
Built-in Communication
Figure 5-4. Typical Network Connections for Built-In Modbus RS-232 Communication