Allen-Bradley 1747-SN User Manual page 101

5–24 RIO Block Transfer
Rung 2:3
WHEN A BTR SUCCESSFULLY COMPLETES, BUFFER THE BT DATA AND UNLATCH THE BT ENABLE
BIT. ALSO, UNLATCH THE BTR PENDING BIT AND LATCH THE BIT THAT CONTINUES
CHECKING THE BTR STATUS UNTIL THE SN MODULE TURNS OFF THE DONE BIT.
|
|
| VIRTUAL
| BTR DONE
| BIT
| B3:0
|––––] [––––––––––––––––––––––––––––––––––––––––––––––+–+COPY FILE
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Rung 2:4
IF A BTR ERROR OCCURS, UNLATCH THE ENABLE BIT AND BUFFER THE BT ERROR CODE.
ALSO, UNLATCH THE BTR PENDING BIT AND LATCH THE BIT THAT CONTINUES CHECKING
THE BTR STATUS UNTIL THE SN MODULE TURNS OFF THE ERROR BIT.
|
|
| VIRTUAL
| BTR ERROR
| BIT
| B3:0
|––––] [––––––––––––––––––––––––––––––––––––––––––––––+–+MOVE
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Publication 1747 6.6 - July 1996
13
12
BTR DATA
+COP–––––––––––––––+
+–+–|
| |Source #M1:1.110| | |
| |Dest #N7:10| | |
| |Length 64| | |
| +––––––––––––––––––+ | |
| SERVICE
| THE BTR
| STATUS/
| BTR
| PENDING
| B3:5
+––––(U)–––––––––––––––+ |
| 0
|
|
| VIRTUAL
| BT ENABLE
| BIT
| B3:100
+––––(U)–––––––––––––––+ |
| 15
| CHECK BTR
| STATUS
| UNTIL DN
| OR ER BIT
| IS OFF
| B3:5
+––––(L)–––––––––––––––+ |
1
BTR ERROR
CODE
+MOV–––––––––––––––+
+–+–|
| |Source B3:3| | |
| | 0000000000000000| | |
| |Dest B3:4| | |
| | 0000000000000000| | |
| +––––––––––––––––––+ | |
|
| SERVICE
| THE BTR
| STATUS/
| BTR
| PENDING
| B3:5
+––––(U)–––––––––––––––+ |
| 0
|
|
| VIRTUAL
| BT ENABLE
| BIT
| B3:100
+––––(U)–––––––––––––––+ |
| 15
| CHECK BTR
| STATUS
| UNTIL DN
| OR ER BIT
| IS OFF
| B3:5
+––––(L)–––––––––––––––+ |
1
|
|
|
|
|
|
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
|
|
|
|
|
|
|
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
|