Error History Function - Mitsubishi Electric MELSEC iQ-R User Manual

1.6

Error History Function

Up to 16 errors that occurred in the flexible high-speed I/O control module are stored in the buffer memory areas as an error
history.
Operation
The error code and error time of each error are stored in Error history No.1 (Un\G8010 to Un\G8019) and sequentially
thereafter.
The error time is stored as shown below.
Ex.
The following shows the case of Error history No. 1.
to
b15
Un\G8010
Un\G8011
First two digits of the year
Un\G8012 Month
Hour
Un\G8013
Second
Un\G8014
Un\G8015 Millisecond (higher-order digits)
Un\G8016
to
Un\G8019
Item
Error code
First two digits of the year/last two
digits of the year
Month/day
Hour/minute
Second
Day of the week
Millisecond (upper)/millisecond (lower)
System area
*1 Value of when a reset error during hardware logic control (error code: 1020H) occurred at 12:34:56.789 on Monday, October 31st, 2016
Clearing the error history
The error history can be cleared with one of the following methods.
• Turning off the power
• Resetting the CPU module
• Setting 'Clear setting of error history' (Un\G8002) to Clear the history. (1) and turning on and off Error clear request (YF)
b8 b7
to
Error code
Last two digits of the year
Day
Minute
Day of the week
Millisecond (lower-order digits)
System area
Description
The error code is stored.
Stored as a BCD code.
For each day of the week, one of the following values is stored as a BCD code.
Sunday: 0H, Monday: 1H, Tuesday: 2H, Wednesday: 3H, Thursday: 4H, Friday: 5H,
Saturday: 6H
Stored as a BCD code.

b0
1.6 Error History Function
1
*1
Storage example
1020H
2016H
1031H
1234H
56H
1H
0789H

1 FUNCTIONS
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