Mitsubishi Electric NZ2EX2B-60AD4 User Manual page 145

(a) How to clear a warning or an alarm
The method for clearing an error depends on the error type.
Error type
Warning
Input signal error
detection
Minor error
Alarm
Alert output
*1 A warning results in the following state five seconds after the error cause is removed.
• Warning flag (RX7) turns off.
• Latest warning code (RWr1) is cleared.
• The ERR. LED turns off.
*2 The error of the input signal error detection is not automatically cleared. Latest warning code (RWr1) is cleared when the
other minor errors are cleared while an input signal error occurs.
The warning codes can be checked in the error history on GX Works2. For the error history, refer to the following:
• Checking by executing a command of the slave station ( Page 168, Section 11.1 (1))
• Error history data ( Page 222, Appendix 3 (23))
Ex.
Operation to clear Station number switch changing error (error code: 0940H)
Station number setting
switch
Warning flag (RX7)
Latest warning code
(RWr1)
ERR. LED
Remote READY
(RXB)
For the method for clearing an alarm, refer to the following:
• Input Signal Error Detection Function ( Page 101, Section 8.9)
• Alert Output Function (Process Alarm) ( Page 105, Section 8.10)
A warning is cleared five seconds after the error cause is removed.
After the analog input value returns to a value that is larger than the criteria of
disconnection detection, turn on Error clear request flag (RYA) or Initial data setting request
*2
flag (RY9) from off.
The error is automatically cleared when the digital operation value returns to within the set
range between the process alarm upper lower limit value and the process alarm lower
upper limit value.
Controlled by the A/D converter module
ON
OFF
0940H
0
(station number switch changing error)
Lights out Flashing
ON
CHAPTER 8 FUNCTIONS
Clearing an error
*1
OFF
0
Lights out
5 seconds
8
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