1747-6.22, Backup Scanner User Manual

Block Transfer Read
Control Logic Example
Control Bits
This Bit: Is Set:
Read-Write RW -
M0:e.x00/7
Timeout TO - M0:e.x00/8
Enable EN - M0:e.x00/
15
RIO Block Transfer 7-123
by your SLC control program. A 0 indicates a write operation;
a 1 indicates a read operation.
if you leave the timeout bit reset, the scanner repeatedly tries
to send a block transfer request to an unresponsive module
for four seconds before setting the ER bit. If you set the TO bit
through your SLC program the scanner attempts to cancel the
BT request.
by your SLC control program to initiate a BT request.
The following pages contain generic BTR and BTW control logic
examples.
Publication 1747-6.22