Rockwell Automation 1771-TCM,D17716.5.108 TEMPERATURE CONTROL MOD - Manual (Page 112)

Example Ladder Logic Program
Appendix C
C-20
Wed Jun 1, 1994 Page 14
Program Listing Report PLC–5/40 File TCM Rung 33:0
Rung 33:0
The following eight rungs latch the request gains block bit when the Autotune
finished bit for any of the eight loops is set.
| AUTOTUNE AUTOTUNE |
| FINISHED FINISHED |
| LOOP #1 LOOP #1 |
| B21 B21 |
+––––] [––––––––––––––––––––––––––––––––––––––––––––––––––––––––––+–––(U)––––+–+
| 96 | 96 | |
| | REQUEST | |
| | GAINS | |
| |BLOCK BIT | |
| | N39:34 | |
| +–––(L)––––+ |
| 0 |
Rung 33:1
| AUTOTUNE AUTOTUNE |
| FINISHED FINISHED |
| LOOP #2 LOOP #2 |
| B21 B21 |
+––––] [––––––––––––––––––––––––––––––––––––––––––––––––––––––––––+–––(U)––––+–+
| 97 | 97 | |
| | REQUEST | |
| | GAINS | |
| |BLOCK BIT | |
| | N39:34 | |
| +–––(L)––––+ |
| 0 |
Rung 33:2
| AUTOTUNE AUTOTUNE |
| FINISHED FINISHED |
| LOOP #3 LOOP #3 |
| B21 B21 |
+––––] [––––––––––––––––––––––––––––––––––––––––––––––––––––––––––+–––(U)––––+–+
| 98 | 98 | |
| | REQUEST | |
| | GAINS | |
| |BLOCK BIT | |
| | N39:34 | |
| +–––(L)––––+ |
| 0 |
Rung 33:3
| AUTOTUNE AUTOTUNE |
| FINISHED FINISHED |
| LOOP #4 LOOP #4 |
| B21 B21 |
+––––] [––––––––––––––––––––––––––––––––––––––––––––––––––––––––––+–––(U)––––+–+
| 99 | 99 | |
| | REQUEST | |
| | GAINS | |
| |BLOCK BIT | |
| | N39:34 | |
| +–––(L)––––+ |
| 0 |