Input Diagnostic; Double Input Discrepancy Detection Function - Mitsubishi Electric CC-Link IE-NZ2GNSS2-8D User Manual

8.5

Input Diagnostic

The input diagnosis function is a safety function for determining failure of input signals using the safety input function.

Double input discrepancy detection function

Discriminates failures by monitoring the discrepancy state of doubled safety remote inputs (SA\X).
Double input discrepancy detection
If "Double input discrepancy detection setting" is set to "0: Detect" from the "Parameter of Slave Station" window, a double
input discrepancy detection error is generated as an input error when the discrepancy state of double inputs continues for the
set time or longer. For the double input discrepancy detection time, refer to the following.
Page 91 Double input discrepancy detection time
The following figure shows the operation overview of the double input discrepancy detection for double wiring inputs X0 and
X1.
Input terminal status:
X0
Input terminal status:
X1
SA\X0
SA\X1
Error status flag
(RWr0.b10)
Error code
(RWr1)
(1) After the double input discrepancy detection time elapses, a double input discrepancy detection error occurs.
Double input discrepancy
detection time
Both OFF
(1)
0203H
8 FUNCTIONS
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8.5 Input Diagnostic
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