B&R COMPACT PLC
3) Channel Refresh Time (with conversion in END routine)
a) Program cycle time is less than channel conversion time (depends on the filter)
Refresh time
max
b) Program cycle time is longer than the channel conversion time (depends on the filter)
Refresh time = Number of channels * Program cycle time
4) END Routine
If the analog conversion is executed in the END routine, the routine controls whether the conversion of
a channel is finished. If "yes", the value is read and the conversion of the next channel is started. If
"no", the analog conversion part of the program is skipped.
Flow chart:
- 168 -
= Number of channels * (Channel conversion time + Program cycle time)
END
Channel
conversion
complete?
yes
Read value
Start next
channel
End
(one channel per cycle)
no