Rockwell Automation 1771-TCM,D17716.5.108 TEMPERATURE CONTROL MOD - Manual (Page 129)

Appendix C
Example Ladder Logic Program
C-37
Wed Jun 1, 1994 Page 31
Program Listing Report PLC–5/40 File TCM Rung 44:3
Rung 44:3
The following two rungs will increment the BTW Error Counter (C25:1) assigned
to TCM each time an unsuccessful BTW is attempted to the module.
| ERROR BTW TO |
| PERFORMING TCM |
| BTW TO ERROR |
| TCM COUNTER |
| B24 +CTU–––––––––––––––+ |
+––––] [–––––––––––––––––––––––––––––––––––––––––––––+COUNT UP +–(CU)–+
| 92 |Counter C25:1| |
| |Preset 5+–(DN) |
| |Accum 0| |
| +––––––––––––––––––+ |
Rung 44:4
| BTW TO |
| TCM |
| ERROR |
| COUNTER |
| ENABLED |
| C25:1 |
+––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––(U)–––––+
| CU |
Rung 44:5
| |
+––––––––––––––––––––––––––––––––[END OF FILE]–––––––––––––––––––––––––––––––––+
| |