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Command Reference: Function Blocks Section 8-5
Error Handling and Error Resetting
Note If more than one input is ON, the output corresponding to the first input to turn
ON will turn ON for 2 s. If more than one input turns ON in the same NE1A-
series Controller cycle, then all outputs will turn OFF.
Timing Chart
Error condition Behavior for error detection Resetting the
error condition
Output Fault Present
More than one input was
ON for more than 2 s
OFF
(safety state)
ON
Remove the cause
of the error. (Cor-
rect system so that
only 1 contact is
ON.)
All inputs were OFF for
more than 2 s
Input1
Output2
Input2
Fault
Present
Output1
Input3
Output3
Idle to RUN 2 s 2 s 2 s
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