Using a plc-2 with a 1772-sd2 scanner – Rockwell Automation 2705 RediPanel Push Button Module User 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