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10 FUNCTIONS
10.4 Input Diagnostic Function
10.4
Input Diagnostic Function
Double input discrepancy detection function
This function identifies failures by monitoring the discrepancy state of double safety inputs (SA\X).
Double input discrepancy detection
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Double input discrepancy detection (input discrepancy detection time specified)
In the "Application setting" window, when "Redundant input discrepancy detection settings" is set to "Enabled" and
"Redundant input discrepancy detection type" is set to "Discrepancy detection time specified", if the double input discrepancy
state continues for the specified time or longer, a double input discrepancy detection error will occur as an input error. For the
double input discrepancy detection time, refer to the following.
Page 172 Double input discrepancy detection time
The following shows an overview of double input discrepancy detection (input discrepancy detection time specified) operation
for double wiring inputs (X00 in the RX40NC6B (Main) and X00 in the RX40NC6B (Sub)).
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Operation when an error is detected (input discrepancy detection time specified)
When the double input discrepancy state continues for the specified time or longer, a double input discrepancy detection error
(error code: 1400H) will occur. In addition, the input point where a double input discrepancy was detected becomes OFF.
For the input point where a double input discrepancy was detected, check it with Double input discrepancy detection state
(Un\G1036) because a bit of the corresponding input point in this buffer memory area becomes ON.
(1) After the double input discrepancy detection time elapses, a double input discrepancy detection error occurs.
(1)
SA\X0
Double input discrepancy
detection time
Input terminal state of the
RX40NC6B (Main): X00
Input terminal state of the
RX40NC6B (Sub): X00
Содержание MELSEC iQ-RX40NC6B
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