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58
Configure Modules in RSLogix 5000 Software
Work with the Output
Configuration Dialog
Safety Output Parameters
Parameter
Value
(1)
Name
x Point
Single
Operation
Dual
Type
x Point Mode Not Used
Safety
Safety Pulse Test The output point is enabled and performs a pulse test on the output.
x Output Error
0...65,530 ms (in
Latch Time
increments of 10
ms)
(1)
Parameters directly related to safety are marked with an X in the left column.
Publication 1791DS-UM001H-EN-P - April 2009
Read this for a procedure on how to configure safety outputs by using
the information in the table and completing the entries referring to the
figure.
Description
The output is treated as a single channel.
The 1791DS module treats the outputs as a pair. It always sets them HI to LO as a
matched pair.
Safety logic must set both of these outputs ON or OFF at the same time or the module
will declare a channel fault.
The output is disabled.
The output point is enabled, and it does not perform a pulse test on the output.
When the output is energized, the output pulses LO briefly. The pulse test detects if
24V remains on the output terminal during this LO pulse due to a short to 24V or if the
output is shorted to another output terminal.
The purpose for latching output errors is to make sure that intermittent faults that
may only exist for a few milliseconds are latched long enough to be read by the
controller. The amount of time to latch the errors will be based on the RPI, the safety
task watchdog, and other application-specific variables.
Default
Dual-channel
Not Used
1000 ms
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