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10 FUNCTIONS
10.4 Input Diagnostic Function
• When a double input discrepancy detection error occurs
After the input terminals turn into the state of ON/ON, when the discrepancy state (ON/OFF or OFF/ON) continues for longer
than 500ms, a double input discrepancy will be detected and a double input discrepancy detection state will arise. A double
input discrepancy detection error (error code: 1400H) will not occur. In the double input discrepancy detection state, if the
input terminals return to the ON/ON state and that state continues for longer than 500ms, a double input discrepancy
detection error (error code: 1400H) will occur.
■
Operation when an error is detected (input discrepancy detection time not specified)
In the double input discrepancy detection state, if the input terminals return to the ON/ON state and that state continues for
longer than 500ms, 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) Detects a double input discrepancy.
(2) A double input discrepancy detection error occurs.
(3) SA\X0 continues to be OFF.
(5) No discrepancy
(6) Discrepancy occurred
500ms
500ms
(1)
(5)
(6)
(2)(3)
Input terminal state of the
RX40NC6B (Main): X00
SA\X0
Input terminal state of the
RX40NC6B (Sub): X00
Double input discrepancy detection
state X00 (in the module)
Summary of Contents for MELSEC iQ-RX40NC6B
Page 1: ...MELSEC iQ R I O Module With Diagnostic Functions User s Manual Application RX40NC6B RY40PT5B ...
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Page 125: ...4 OVERVIEW 123 4 MEMO ...
Page 191: ...12 MAINTENANCE AND INSPECTION 189 12 MEMO ...
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