Mitsubishi Electric MELSEC iQ-R Series User Manual page 66

Ex.
The figure below shows the example of when the 17th error has occurred. The 17th error is stored in Error history 1, and
'Latest address of error history' (Un\G1) is overwritten with the value 3600 (start address of Error history 1).
Latest address of error history
(Un\G3600)
• Once the error history storage area becomes full, subsequent error information will overwrite the existing
data, starting from Error history 1 (Un\G3600 to Un\G3609), and continues sequentially thereafter. The
overwritten history is deleted.
• The same processing is performed for Alarm history when an alarm occurs.
• The stored error history is cleared when a temperature input module is powered off, or when the CPU
module is reset.
1 FUNCTIONS
64
1.12 Error History Function
Un/G3600
Error history No.1
1st error
Un/G3610
Error history No.2
2nd error
Un/G3620
Error history No.3
3rd error
Un/G3750
Error history No.16
16th error
New
17th error