Mitsubishi Electric MELSEC iQ-R Series User Manual page 40

Ex.
The following shows an example of when the 17th error occurs. The 17th error is stored in Error history 1, and 'Latest address
of error history' (Un\G598) is overwritten with the value 800 (start address of Error history 1).
'Latest address of error history'
(Un\G598): 800
Un\G800
Un\G810
Un\G820
Un\G950
• Once the error history storage area becomes full, subsequent error information will overwrite the existing
data, starting from Error history 1 (Un\G800 to Un\G809), and the overwriting continues sequentially
thereafter. The overwritten history is deleted.
• The same processing is performed for the alarm history when an alarm occurs.
1 FUNCTIONS
38
1.10 Error History Function
Error history 1
1st error
Error history 2
2nd error
Error history 3
3rd error
Error history 16
16th error
Latest
17th error