Rockwell Automation 2705 RediPanel Push Button Module - Manual (Page 48)

Chapter 4
Programming the RediPANEL Modules
4–9
When using a PLC-2/20 or 2/30 with a RediPANEL module, the system must
include a 1772-SD2 Remote I/O Scanner/Distribution Panel (or a 1771-SN
Sub I/O Scanner Module). The 1772-SD2 allows the PLCs to communicate
with as many as 16 remote I/O devices in any configuration totaling 7 logical
racks of I/O or less.
For details on 1771-SD2 wiring connections and switch settings, see
Publication No. 1772-2.18 (The Remote I/O Scanner/Distribution Panel).
Programming Example
Switch Bank #1 on the RediPANEL Module is set to use:
•
Rack Address 2 (switch settings 1 - 6)
•
Module Group 0 (switch settings 7 and 8)
Figure 4.1 shows typical address instructions and how these instructions are
used in your PLC-2/20 or 2/30 program.
Figure 4.1
PLC-2/20 or 2/30 Programming Example
Input
Press Push
Button #1
Output
03 00
Push Button #4 Lamp Push Button #1
Module Group 0
020 120 Module Group 0
Illuminate Push
Button #4
Rack #2
Bits
1 2 3 4
5 6 7 8
9 10 11 12
13 14 15 16
00 01 02 03
04 05 06 07
10 11 12 13
14 15 16 17
00 03
020 120
Using a PLC-2
with a 1772-SD2 Scanner