List Of Alarm Codes - Mitsubishi Electric MELSEC iQ-R Series User Manual

3.5

List of Alarm Codes

The pulse input module stores an alarm code in a buffer memory area of the alarm channel when an alarm occurs during its
operation.
To clear the alarm, turn on the output signal (Y) of the alarm channel listed below so that the alarm code stored in a buffer
memory area of the alarm channel is cleared.
The corresponding buffer memory area and output signals (Y) vary depending on the channel where an alarm has occurred.
Alarm channel
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
The following table lists the alarm codes to be stored.
Alarm code Alarm name
*1
0800H Warning output (upper limit)
*1
0810H Warning output (lower limit)
*1 The count operation continues for the channel where the alarm has occurred.
3 TROUBLESHOOTING
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3.5 List of Alarm Codes
Buffer memory area
'CH1 Alarm code' (Un\G10)
'CH2 Alarm code' (Un\G26)
'CH3 Alarm code' (Un\G42)
'CH4 Alarm code' (Un\G58)
'CH5 Alarm code' (Un\G74)
'CH6 Alarm code' (Un\G90)
'CH7 Alarm code' (Un\G106)
'CH8 Alarm code' (Un\G122)
Description and cause
A warning output (upper limit warning) has occurred.
A warning output (lower limit warning) has occurred.
Output signal (Y)
'CH1 Error reset request' (Y8)
'CH2 Error reset request' (Y9)
'CH3 Error reset request' (YA)
'CH4 Error reset request' (YB)
'CH5 Error reset request' (YC)
'CH6 Error reset request' (YD)
'CH7 Error reset request' (YE)
'CH8 Error reset request' (YF)
Action
When the value in CH Sampling pulse number
returns to within the setting range, Normal (0) is
automatically stored in bit 8 of CH Warning output
flag.
When the value in CH Sampling pulse number
returns to within the setting range, Normal (0) is
automatically stored in bit 0 of CH Warning output
flag.