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Command Reference: Function Blocks
Truth Table
1
1
0
0
0
0
0
0
0
Error Handling and Error Resetting
More than one input was
ON for more than 2 s
All inputs were OFF for
more than 2 s
Note
Timing Chart
Input1
Input2
Input3
Output1
Output2
Output3
Fault
Present
Inputs
2
3
4
5
6
0
0
0
0
0
1
0
0
0
0
0
1
0
0
0
0
0
1
0
0
0
0
0
1
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0: OFF, 1: ON
Error condition
(safety state)
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.
Idle to RUN
2 s
7
8
1
2
3
0
0
1
0
0
0
0
0
1
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
1
0
0
0
Behavior for error detection
Output
Fault Present
OFF
ON
2 s
Section 6-5
Outputs
4
5
6
7
8
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
1
0
0
0
0
0
1
0
0
0
0
0
1
0
0
0
0
0
1
Resetting the
error condition
Remove the cause
of the error. (Cor-
rect system so that
only 1 contact is
ON.)
2 s
151
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