Mitsubishi Electric NZ2EX2B-60AD4 - Alarm Code List; Main A;D Converter Module; Extension A;D Converter Module

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For two or more errors, only the latest error code is stored in Latest error code (RWr0) or Latest warning code (RWr1).
The errors that have occurred in the past can be checked in the error history of the engineering tool.
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))
11.3 Alarm Code List
11.3.1 Main A/D converter module
Here is the list of alarm codes:
11.3.2 Extension A/D converter module
Here is the list of alarm codes:
Alarm code
(hexadecimal)
Classification Alarm name Description and cause Action
0AH Minor error
Process alarm
occurrence
A process alarm has occurred.
 indicates the number of the channel where a
process alarm has occurred.
 indicates the status as follows:
0: Process alarm upper limit
1: Process alarm lower limit
When the digital operation value falls within the
setting range, the corresponding bit of Alert
output flag (RWrB) and Alert output signal
(RX18) turn off automatically and Latest
warning code (RWr1) is cleared.
0BH Minor error
Input signal error
detection
An input signal error has occurred.  indicates
the number of the channel where an input
signal error has occurred.
 indicates the status as follows:
3: Disconnection detection
This alarm code is stored when an input signal
error is detected according to the setting of the
input signal error detection function.
After the analog input value falls within the
range, turning on and off Error clear request
flag (RYA) results in the corresponding bit of
Input signal error detection flag (RWrA) and
Input signal error detection signal (RX1C)
turning off.
Alarm code
(hexadecimal)
Classification Alarm name Description and cause Action
1AH Minor error
Process alarm
occurrence
A process alarm has occurred.
 indicates the number of the channel where a
process alarm has occurred.
 indicates the status as follows:
0: Process alarm upper limit
1: Process alarm lower limit
When the digital operation value falls within the
setting range, the corresponding bit of Alert
output flag (RWr1B) and Alert output signal
(RX28) turn off automatically and Latest
warning code (RWr1) is cleared.
1BH Minor error
Input signal error
detection
An input signal error has occurred.  indicates
the number of the channel where an input
signal error has occurred.
 indicates the status as follows:
3: Disconnection detection
This alarm code is stored when an input signal
error is detected according to the setting of the
input signal error detection function.
After the analog input value falls within the
range, turning on and off Error clear request
flag (RYA) results in the corresponding bit of
Input signal error detection flag (RWr1A) and
Input signal error detection signal (RX2C)
turning off.