Omron NE1A-SCPU01 - 07-2009 Operation Manual page 184

Command Reference: Logic Functions
General Description
Fault Present Output Setting
Error Handling and Error Resetting
Timing Table
Fault Present
150
This function can be used with Controllers with unit version 1.0 or later
(including Controllers that support EtherNet/IP).
When the input condition to the Reset Set Flip-Flop function block is turned
ON, that ON status is maintained (latched) in the function block and the ON
output is maintained at the Output Enable signal.
The ON status is maintained in the function block, so the Output Enable signal
stays ON even if the input condition goes from ON to OFF.
The signal maintained in the function block is turned OFF when the function
block's RESET condition is turned ON.
A Fault Present output can also be used in programming.
To enable this output, select the Fault Present checkbox on the Out Point Tab
Page of the function block properties dialog box.
Error condition Behavior for error detection
Output Enable
Input and OFF
Reset are
(safety state)
active simulta-
neously.
Input
RESET
Output
Enable
Resetting the error condition
Fault Present
ON Make one of the signals inactive.
Section 8-4