Rockwell Automation 1747-L5xx SLC 500 Modular Hardware Style User Manual User Manual

Page 206

Publication 1747-UM011G-EN-P - June 2008

206

RS-232 Communication Interface

instruction for all channel 0 system mode drivers and for channel 1
(DH-485) on the SLC 5/03 processor.

Either half-duplex or full-duplex modem types can be used for the
master, but half-duplex modems must be used for the slaves
(assuming there is more than one on a multi-drop network).

TIP

Broadcast is not supported for read commands or any remote

messages. Broadcast is also not supported by the SLC 5/04

channel 1 DH+ network or the SLC 5/05 channel 1 Ethernet

network.

Modular Controller with SLC
5/02 Processor and 1747-KE
Interface Module (slave)

Modular Controller with
SLC 5/03 Processor (slave)

Modular Controller with SLC
5/01 Processor and 1747-KE
Interface Module (slave)

Fixed Controller with 1747-KE
Interface Module (slave)

Personal Computer
Running RSLinx with DF1
Half-duplex Protocol
(master)

RS-232 (DF1 protocol)

Modem