Rockwell Automation 1771-TCM,D17716.5.108 TEMPERATURE CONTROL MOD - Manual (Page 117)

Appendix C
Example Ladder Logic Program
C-25
Wed Jun 1, 1994 Page 19
Program Listing Report PLC–5/40 File TCM Rung 42:0
Rung 42:0
| +NOT–––––––––––––––+ |
+–––––––––––––––––––––––––––––––––––––––––––––––––––––––––+NOT +–+
| |Source B26:0| |
| | 0000001111111111| |
| |Destination B21:4| |
| | 1111110000000000| |
| +––––––––––––––––––+ |
Rung 42:1
| DOWNLOAD |
| TO TCM |
| REQUIRED |
| BIT–MAP |
| |
| +MVM–––––––––––––––+ |
+–––––––––––––––––––––––––––––––––––––––––––––––––––––––––+MOVE WITH MASK +–+
| |Source 0| |
| | | |
| |Mask B21:4| |
| | FC00| |
| |Destination B21:0| |
| | 0000000000000000| |
| +––––––––––––––––––+ |
Rung 42:2
The following three rungs determine if a static command block (other than DYC)
download is required to TCM.
| STATIC |
| COMAND BLK |
| DOWNLOAD |
| TO TCM |
| REQUIRED |
| B21 |
+––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––(U)–––––+
| 29 |
Rung 42:3
| DOWNLOAD STATIC |
| TO TCM COMAND BLK |
| REQUIRED DOWNLOAD |
| BIT–MAP TO TCM |
| REQUIRED |
| +NEQ–––––––––––––––+ B21 |
+–+NOT EQUAL +–––––––––––––––––––––––––––––––––––––––––––––––––(L)–––––+
| |Source A B21:0| 29 |
| | 0000000000000000| |
| |Source B 512| |
| | | |
| +––––––––––––––––––+ |
Rung 42:4
| STATIC | STATIC |
| COMAND BLK|COMAND BLK DYC |
| DOWNLOAD | DOWNLOAD DOWNLOAD |
| TO TCM | REQUIRED TO TCM |
| REQUIRED | MEMORY REQUIRED |
| B21 B21 B21 |
+––––]/[––––––––] [––––––––––––––––––––––––––––––––––––––––––––––––––––(L)–––––+
| 29 30 9 |