Error Notification Function - Mitsubishi Electric NZ2GF2B1-16D User Manual

9.3

Error Notification Function

When an error or warning occurs, the I/O module notifies the master station of it using remote registers.
Remark
The notification of the error or warning can be checked on the LED on the front of the module.
For details, refer to the following.
• PART NAMES ( Page 25, CHAPTER 3)
(1) Notification of an error
The I/O module notifies the master station of an error in the following method.
Item
Error status flag (RWr0.b10)
Error clear request flag (RWw0.b10)
Error code (RWr1)
Depending on the major error status such as a hardware failure of the module, Error status flag (RWr0.b10) may not be
turned on, or an error code may not be stored in Error code (RWr1). When the above error occurs, check the error
occurrence with the LED indication on the front of the module, and please consult your local Mitsubishi representative.
(a) Method for clearing an error
The method for clearing an error depends on the error type.
Error type
Major error
Moderate error
(2) Notification of a warning
The I/O module notifies the master station of a warning in the following method.
Item
Warning status flag (RWr0.b12)
Warning code (RWr2)
178
Description
Turns on when a moderate error or major error occurs.
Some errors can be cleared by turning on and off Error clear request flag
(RWw0.b10).
An error code is stored when a moderate error or major error occurs.
The error cannot be cleared.
Turn on Error clear request flag (RWw0.b10) or Operation condition setting request flag (RWw0.b9) after
removing the error cause.
Description
Turns on when a minor error occurs.
The error code is stored when a minor error occurs.
Clearing an error
Reference
Page 261, Appendix 2 (1) (c)
Page 266, Appendix 2 (9) (c)
Page 262, Appendix 2 (2)
Reference
Page 262, Appendix 2 (1) (f)
Page 262, Appendix 2 (3)