5–25RIO Block Transfer
Publication
17476.6 - July 1996
Rung 2:5
WHEN USER LOGIC INITIATES A NEW BTR, LATCH THE ENABLE BIT , AS LONG AS A BTR IS
NOT IN PROGRESS. ALSO, LATCH THE BTR PENDING BIT , SO THE BTR STATUS FILE WILL
BE READ BY THE LADDER PROGRAM.
| | | | SERVICE |
| USER LOGIC| | | THE BTR |
| TO |VIRTUAL |VIRTUAL |VIRTUAL STATUS/ |
| INITIATE A|BT ENABLE |BTR DONE |BTR ERROR BTR |
| BTR |BIT |BIT |BIT PENDING |
| I:2.0 B3:100 B3:0 B3:0 B3:5 |
|––––] [––––––––]/[––––––––]/[––––––––]/[–––––––––––––––––––––––+––––(L)–––––+–|
| 0 15 13 12 | 0 | |
| | | |
| | | |
| | VIRTUAL | |
| | BT ENABLE | |
| | BIT | |
| | B3:100 | |
| +––––(L)–––––+ |
| 15 |
Rung 2:6
MOVE THE VIRTUAL CONTROL WORD TO THE M0 FILE FOR THE SN MODULE WHENEVER A
TRANSITION OF THE BTR ENABLE BIT OCCURS.
| |
| |
| VIRTUAL |
| BT ENABLE |
| BIT |
| B3:100 +MOV–––––––––––––––+ |
|–+––––] [–––––+––––––––––––––––––––––––––––––––––––––––––+MOVE +–|
| | 15 | |Source B3:100| |
| | | | 0000000000000000| |
| | | |Dest M0:1.100| |
| | | | *| |
| | | +––––––––––––––––––+ |
| | | |
| | | |
| | VIRTUAL | |
| | BTR DONE | |
| | BIT | |
| | B3:0 | |
| +––––] [–––––+ |
| | 13 | |
| | | |
| | | |
| | VIRTUAL | |
| | BTR ERROR | |
| | BIT | |
| | B3:0 | |
| +––––] [–––––+ |
| 12 |
Rung 2:7
| |
|–––––––––––––––––––––––––––––––––––––+END+––––––––––––––––––––––––––––––––––––|
| |
Block Transfer Write Control Logic Example
Rung 2:0
CONFIGURE THE BTW LENGTH AND RIO ADDRESS AT POWER–UP. ALSO, BE SURE THE BLOCK
TRANSFER OPERATION BIT IS A ”0” INDICATING A BTW. ALL THESE PARAMETERS MUST BE
ENTERED PRIOR TO PLACING THE PROCESSOR IN THE RUN MODE.
| |
| |
| |
| POWER–UP |
| BIT |
| S:1 +COP–––––––––––––––+ |
|––––] [––––––––––––––––––––––––––––––––––––––––––––––––––+COPY FILE +–|
| 15 |Source #B3:100| |
| |Dest #M0:1.100| |
| |Length 3| |
| +––––––––––––––––––+ |
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