Rockwell Automation 1747-SN Remote I/O Scanner - Manual (Page 130)

Publication 1747-UM013B-EN-P - January 2005
D-2 Block Transfer Examples for Earlier Processors
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 BTR DATA |
| B3:0 +COP---------------+ |
|----] [----------------------------------------------+-+COPY FILE +-+-|
| 13 | |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 |
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 BTR ERROR |
| BIT CODE |
| B3:0 +MOV---------------+ |
|----] [----------------------------------------------+-+MOVE +-+-|
| 12 | |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 |