Setup guide

Setting Configuration Parameters
1
7
Setting Application Parameters
Click on the 'Application Parameters' tab.
Timeouts
Power Fail
Timeout
If the I/O rack loses power, and static memory is configured to
RETAIN values (SW1-5 set ON), the "Power Fail Timeout" specifies
how the I/O rack will handle output values when power is restored. The
function of the Power Fail Timeout is described in the table, below:
Value of "Power Fail
Timeout"
Affect on outputs when power is restored
Power Fail Timeout is
set to 0 seconds.
DOs will be set to 0 (FALSE).
AOs will be set to the "User Configured
Output" value, if any.
Power Fail Timeout is
set to a value greater
than 0 and less than
65,535 seconds.
If the amount of time the power was off is less
than the specified Power Fail Timeout, outputs
are set to the last state they were in prior to the
power failure.
2
2
The last state is stored in static memory.
This timeout determines
what happens to output
values when the I/O rack's
power is restored following
a power failure.
This timeout determines
what happens to output
values when the I/O rack
loses communications
with its host controller.