Rockwell Automation 1785-BCM_BEM, D17856.5.4 PLC-5 Backup Communication Module User Manual - Manual (Page 140)

Sample Programs
Appendix A
A-22
Rung 10:2
THERE IS A RUNG FOR EACH BLOCK WRITE (1–16) THAT PREFORMS THE BTW AND MOVES THE
DATA FROM N34 TO THE PROPER BTW DATA FILE. TO ADJUST THIS PROGRAM DELETE EACH
UNUSED BLOCK ID RUNG AND ADJUST WORD N30:182 TO THE DESIRED PACKET LENGTH.
| PACKET |
| LENGTH |
| BTW 2 STORED IN |
| EN N30:182 |
| N30:15 +MOV–––––––––––––––+ |
+––––]/[––––––––––––––––––––––––––––––––––––––+––––––––––+MOVE ++–+
| 15 | |Source N30:182|| |
| | | 3|| |
| | |Dest N32:65|| |
| | | 3|| |
| | +––––––––––––––––––+| |
| | BTW 2 | |
| | BID=2 | |
| | +MOV–––––––––––––––+| |
| +––––––––––+MOVE ++ |
| | |Source 2|| |
| | | || |
| | |Dest N32:66|| |
| | | 2|| |
| | +––––––––––––––––––+| |
| | BTW 2 | |
| | DATA | |
| | +COP–––––––––––––––+| |
| +––––––––––+COPY FILE ++ |
| | |Source #N34:62|| |
| | |Dest #N32:67|| |
| | |Length 62|| |
| | +––––––––––––––––––+| |
| | BTW 2 | |
| |+BTW––––––––––––––––––––+ | |
| ++BLOCK TRNSFR WRITE +–(EN)+ |
| |Rack 00| |
| |Group 0+–(DN) |
| |Module 0| |
| |Control Block N30:15+–(ER) |
| |Data file N32:65| |
| |Length 0| |
| |Continuous N| |
| +–––––––––––––––––––––––+ |