Allen-Bradley 1747-SN - Page 124

5–47RIO Block Transfer
Publication 17476.6 - July 1996
Rung 2:8
THIS RUNG AND THE NEXT RUNG WILL TOGGLE BETWEEN EXECUTING A BTR AND A BTW
WHILE THE USER SUPPLIED BT PRECONDITION BIT (B3:0/11 IS USED IN THIS EXAMPLE)
IS TRUE.
| | | | | |
| | | | | |
| BT |VIRTUAL |VIRTUAL |VIRTUAL |VIRTUAL |
| PRECON– |BTR ENABLE|BTW ENABLE|BTR DONE |BTR ERROR BTR |
| DITION BIT|BIT |BIT |BIT |BIT PENDING |
| B3 N7:50 N7:53 N7:60 N7:60 B3 |
|––––] [––––––––]/[––––––––]/[––––––––]/[––––––––]/[––––––––––––+––––(L)–––––+–|
| 11 15 15 13 12 | 0 | |
| | | |
| | | |
| | VIRTUAL | |
| | BTR ENABLE | |
| | BIT | |
| | N7:50 | |
| +––––(L)–––––+ |
| 15 |
Rung 2:9
| | | | | |
| BT |VIRTUAL |VIRTUAL |VIRTUAL |VIRTUAL |
| PRECON– |BTR ENABLE|BTW ENABLE|BTW DONE |BTW ERROR |
| DITION BIT|BIT |BIT |BIT |BIT BTW DATA |
| B3 N7:50 N7:53 N7:64 N7:64 +COP–––––––––––––––+ |
|––––] [––––––––]/[––––––––]/[––––––––]/[––––––––]/[|–+–+COPY FILE +–+–|
| 11 15 15 13 12 | |Source #N7:10| | |
| | |Dest #M0:1.210| | |
| | |Length 11| | |
| | +––––––––––––––––––+ | |
| | | |
| | | |
| | | |
| | | |
| | VIRTUAL | |
| | BTW ENABLE | |
| | BIT | |
| | N7:53 | |
| +––––(L)–––––––––––––––+ |
| | 15 | |
| | | |
| | | |
| | | |
| | BTW | |
| | PENDING | |
| | B3 | |
| +––––(L)–––––––––––––––+ |
| 1 |