Rockwell Automation 1775-MX_S4A,D17756.3.1 User Manual PLC-3 BACKUP CONC(OR.DU1 - Manual (Page 114)

Diagnosing Faults
Chapter 6
6-10
Figure 6.5
Main Routine (RM0) Rung
S0:3 + XOR –––––––––––––––+ + XOR –––––––––––––––+ + XOR –––––––––––––––+
+––[ ]––––+––––+ EXCLUSIVE OR +–––––––+ EXCLUSIVE OR +–––––––+ EXCLUSIVE OR +––+––|
| 01 | | Source A S9:0 | | Source A S9:1 | | Source A S9:2 | | |
| | | 0000000000000000 | | 0000000000000000 | | 0000000000000000 | | |
| | | Source B S9:0 | | Source B S9:1 | | Source B S9:2 | | |
| | | 0000000000000000 | | 0000000000000000 | | 0000000000000000 | | |
| | | Destin S9:0 | | Destin S9:1 | | Destin S9:2 | | |
| | | 0000000000000000 | | 0000000000000000 | | 0000000000000000 | | |
| | +––––––––––––––––––––+ +––––––––––––––––––––+ +––––––––––––––––––––+ | |
| | | |
| | + MVS ––––––––––––––––––––––+ + MVS ––––––––––––––––––––––+ | |
| +––––+ MOVE STATUS +–––––––+ MOVE STATUS +–––––––––––––––––+ |
| | Source S9:0 | | Source S9:0 | |
| | 0000000000000000 | | 0000000000000000 | |
| | Destin E2.2.1.0.2.0 | | Destin E2.2.1.0.2.1 | |
| | 0000000000000000 | | 0000000000000000 | |
| +–––––––––––––––––––––––––––+ +–––––––––––––––––––––––––––+ |
10989ĆI
The first rung in the fault routine memory section is shown in
Figure 6.6. This rung saves the contents of the failure status words by
copying them into file 9 of the data table status area.
Figure 6.6
Fault Routine (RF0) Rung
| 0000 + MVS ––––––––––––––––––––––+ + MVS ––––––––––––––––––––––+
|
+––––[LBL]–––––––––+––––+ MOVE STATUS +––––––––+ MOVE STATUS
+–––––––+––––––|
| | | Source E2.2.1.0.2.0 | | Source E2.2.1.0.2.1 | |
|
| | | 0000000000000000 | | 0000000000000000 | |
|
| | | Destin S9:0 | | Destin S9:1 | |
|
| | | 0000000000000000 | | 0000000000000000 | |
|
| | +–––––––––––––––––––––––––––+ +–––––––––––––––––––––––––––+ |
|
| | |
|
| | + MOV ––––––––––––––––+ |
|
| +––––+ MOVE +–––––––––––––––––––––(RET)––––––––––––––––––––––––+
|
| | Source S0:1 |
|
| | 0000000000000000 |
|
| | Destin S9:2 |
|
| | 0000000000000000 |