Rockwell Automation 1747-KE,D17476.12 DH-485/RS-232C Interface Module - Manual (Page 33)

Publication 1747-UM005B-EN-P - March 2006
Communicate with the Interface Module 3-7
Remote Mode Addressing on a Multi-drop Network Example
This example shows a PLC-5 controller as the half-duplex master in a
multi-drop configuration. Each interface module has been configured
after Remote mode has been selected. The half-duplex master address
of the PLC-5 controller has been set to 010 (octal).
Remote Mode Addressing on a Multi-drop Network
Group 02 Group 01 Group 00
Dedicated Line
Modem
Dedicated Line
Modem
Dedicated Line
Modem
PLC-5 processor
010
8
Interface Module
010
8
01
SLC 500
005
8
05
SLC 500
002
8
02
SLC 500
011
8
09
Interface Module
040
8
00
SLC 500
044
8
04
SLC 500
043
8
03
Dedicated Line
Modem
Interface Module
0101
8
01
SLC 500
100
8
00
SLC 500
131
8
25
SLC 500
120
8
16
SLC 500
104
8
04
XXX
8
= DF1 Multi-drop Address (octal)
XX = DH-485 Local (decimal) Network Address
IMPORTANT
Each interface module must be set up for a unique
group number.