Publication 1747-UM013B-EN-P - January 2005
D-8
Block Transfer Examples for Earlier Processors
Rung 2:3
WHEN A BTR SUCCESSFULLY COMPLETES, BUFFER THE BTR DATA AND UNLATCH THE BTR
ENABLE BIT. ALSO, UNLATCH THE BTR PENDING BIT AND LATCH THE BIT THAT CONTINUES
CHECKING THE BTR STATUS UNTIL THE SN TURNS OFF THE DONE BIT.
| |
| |
| VIRTUAL |
| BTR DONE |
| BIT BTR DATA |
| B3 +COP---------------+ |
|----] [----------------------------------------------+-+COPY FILE +-+-|
| 13 | |Source #M1:1.110| | |
| | |Dest #N7:10| | |
| | |Length 64| | |
| | +------------------+ | |
| | | |
| | | |
| | | |
| | BTR | |
| | PENDING | |
| | B3 | |
| +----(U)---------------+ |
| | 80 | |
| | | |
| | | |
| | VIRTUAL | |
| | BTR ENABLE | |
| | BIT | |
| | B3 | |
| +----(U)---------------+ |
| | 1615 | |
| | | |
| | | |
| | | |
| | CHECK BTR | |
| | STATUS | |
| | B3 | |
| +----(L)---------------+ |
| 81 |
Rung 2:4
WHEN A BTR UNSUCCESSFULLY COMPLETES, BUFFER THE ERROR CODE AND UNLATCH THE BR
ENABLE BIT AND THE BTR PENDING BIT. ALSO, LATCH THE CHECK BTR STATUS BIT IN
ORDER TO CONTINUE READING THE STATUS INFORMATION FROM THE SCANNER UNTIL IT
TURNS THE ERROR BIT OFF, COMPLETING THE HAND-SHAKE PROCESS.
| |
| |
| VIRTUAL |
| BT ERROR BTR ERROR |
| BIT CODE |
| B3 +MOV---------------+ |
|----] [----------------------------------------------+-+MOVE +-+-|
| 12 | |Source M1:1.103| | |
| | | *| | |
| | |Dest N7:9| | |
| | | 0| | |
| | +------------------+ | |
| | | |
| | | |
| | | |
| | BTR | |
| | PENDING | |
| | B3 | |
| +----(U)---------------+ |
| | 80 | |
| | | |
| | | |
| | VIRTUAL | |
| | BTR ENABLE | |
| | BIT | |
| | B3 | |
| +----(U)---------------+ |
| | 1615 | |
| | | |
| | | |
| | | |
| | CHECK BTR | |
| | STATUS | |
| | B3 | |
| +----(L)---------------+ |
| 81 |
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