Rockwell Automation 1785-Lxxx Enhanced and Ethernet PLC-5 Programmable Controllers - Manual (Page 235)

1 Publication 1785-UM012D-EN-P - July 2005
Chapter
14
Preparing Power-Up Routines
Using This Chapter
Setting Power-Up
Protection You can configure your controller so that if a power-loss is experienced while
in run mode, the controller does not come back up in run mode. User control
bit S:26/1 defines whether power-up protection (e.g., fault routine) is executed
upon power-up.
Set S:26/1 manually from the Controller Status screen, or latch this bit through
ladder logic.
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Setting power-up protection 14-1
Allowing or inhibiting startup 14-2
Defining controller power-up
procedure 14-2
If S:26/1 is After power loss, the controller
Set (1) Scans the fault routine before returning to normal program
scan
When set, the controller scans the fault routine once to
completion after the controller recovers from a power loss.
You can program the fault routine to determine whether the
controller’s status will let the controller respond correctly to
logic and whether to allow or inhibit the startup of the
controller.
Reset (0) Powers up directly at the first rung on the first program file