Details Of Buffer Memory Addresses - Mitsubishi Electric MELSEC iQ-RX40NC6B Application User's Manual

Details of buffer memory addresses

This section describes the details of buffer memory addresses of the I/O module with diagnostic functions.
Latest address of error history
This area shows the buffer memory address where the latest error history is stored.
■Buffer memory address
The following table shows the buffer memory address of this area.
Buffer memory name
Latest address of error history
Error history No.
Up to 16 errors that have occurred in the module are registered.
Ex.
For Error history No.1
b15
Un\G16
First two digits of the year
Un\G17
Un\G18
Un\G19
Un\G20
Millisecond (higher-order digits)
Un\G21
Un\G22
Un\G23
Item
Error code
First/Last two digits of the year
Month/Day
Hour/Minute
Second
Day of the week
Millisecond (upper)
Millisecond (lower)
System area
*1 The value stored when the input response time setting error (error code: 1900H) occurs at 12:34:56.789 on Friday, May 27, 2016
■Buffer memory address
The following table shows the buffer memory address of this area.
Buffer memory name
Error history No.
APPX
90
Appendix 3 Buffer Memory
to
b8 b7
Error code
Month
Hour
Second
Millisecond (lower-order digits)
System area
Description
The error code is stored.
The error time is stored in the BCD code.
The following values are stored in the BCD code for each day of the week.
Sunday: 0, Monday: 1, Tuesday: 2, Wednesday: 3
Thursday: 4, Friday: 5, Saturday: 6
The error time is stored in the BCD code.

Error history No.1 to Error history No.16
16 to 143
X/Y0 to X/YF
0
b0
to
Last two digits of the year
Day
Minute
Day of the week
*1
Example
1900H
2016H
527H
1234H
56H
5H
7H
89H
