1747-6.22, Backup Scanner User Manual

7-132 RIO Block Transfer
| | | | |
| | | | |
| BTR PRE± |VIRTUAL |VIRTUAL |VIRTUAL |
| CONDITION |BTR ENABLE|BTR DONE |BT ERROR BTR |
| BIT |BIT |BIT |BIT PENDING |
| B3 B3 B3 B3 B3 |
|----] [--------]/[--------]/[--------]/[-----------------------+----(L)-----+-|
| 83 1615 13 12 | 80 |
| | |
| | |
| | |
| | |
| | VIRTUAL |
| | BTR ENABLE |
| | BIT |
| | B3 |
| +----(L)-----+
| 1615
Rung 2:7
Move the virtual control word to the M0 file for the SN module while a BTR is in progress, and continue doing so until
|
|
| VIRTUAL BTR
| BTR ENABLE CONTROL
| BIT WORD
| B3 +MOV---------------+
|-+----] [-----+------------------------------------------+MOVE +-
| | 1615 | |Source B3:100|
| | | | 0000000000000000|
| | | |Dest M0:1.100|
| | | | *|
| | | +------------------+
| | |
| | |
| | VIRTUAL |
| | BTR DONE |
| | BIT |
| | B3 |
| +----] [-----+
| | 13 |
| | |
| | |
| | VIRTUAL |
| | BT ERROR |
| | BIT |
| | B3 |
| +----] [-----+
| 12
|
|-------------------------------------+END+------------------------------------
|
Publication 1747-6.22
Rung 2:6
Block transfer reads execute continuously as long as the BTR precondition bit is true.
the enable, done and error bits are all turned off, completing the hand-shake process.