Allen-Bradley 1747-SN User Manual page 124

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.
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| BT |VIRTUAL
| PRECON– |BTR ENABLE|BTW ENABLE|BTR DONE
| DITION BIT|BIT
| B3 N7:50
|––––] [––––––––]/[––––––––]/[––––––––]/[––––––––]/[––––––––––––+––––(L)–––––+–|
| 11 15
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Rung 2:9
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| BT |VIRTUAL
| PRECON– |BTR ENABLE|BTW ENABLE|BTW DONE
| DITION BIT|BIT
| B3 N7:50
|––––] [––––––––]/[––––––––]/[––––––––]/[––––––––]/[|–+–+COPY FILE
| 11 15
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|VIRTUAL |VIRTUAL
|BIT |BIT
N7:53 N7:60
15 13
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|VIRTUAL |VIRTUAL
|BIT |BIT
N7:53 N7:64
15 13
RIO Block Transfer
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|VIRTUAL
|BTR ERROR BTR
|BIT
N7:60
12 |
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| VIRTUAL
| BTR ENABLE | |
| BIT
|
+––––(L)–––––+ |
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|VIRTUAL
|BTW ERROR
|BIT BTW DATA
N7:64 +COP–––––––––––––––+
12 | |Source
| |Dest
| |Length
| +––––––––––––––––––+ | |
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| VIRTUAL
| BTW ENABLE
| BIT
| N7:53
+––––(L)–––––––––––––––+ |
| 15
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| BTW
| PENDING
| B3
+––––(L)–––––––––––––––+ |
1
Publication 1747 6.6 - July 1996
5–47
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PENDING |
B3 |
0 | |
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N7:50 | |
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+–+–|
#N7:10| | |
#M0:1.210| | |
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