Chapter 7 Functions; Hardware Logic Control Function; Error History Function - Mitsubishi Electric MELSEC-L Series LD40PD01 User Manual

7
FUNCTIONS
This chapter describes the details on the functions that can be used in the flexible high-speed I/O control module and their
setting methods.
7.1

Hardware Logic Control Function

Users can create the hardware logic to perform a desired control with the configuration tool.
For details, refer to the following.
Page 103 CREATING A HARDWARE LOGIC
7.2

Error History Function

The errors that occurred in the flexible high-speed I/O control module are stored in the buffer memory areas (Un\G8010 to
Un\G8169) as error history.
Up to 16 errors can be stored.
Processing of the error history function
The error code and error time of each error are stored in Error history No. 1 (start address: Un\G8010) and sequentially
thereafter. The error time is stored as shown below.
Ex.
The following shows the case of Error history No. 1.
b15
Un\G8010
Un\G8011
First two digits of the year
Un\G8012
Un\G8013
Un\G8014
Un\G8015
to
Un\G8019
Item
First two digits of the year/last two
digits of the year
Month/day
Hour/minute
Second
Day of the week
*1 Value of when an error occurred at 10:35:40 on Friday, April 24th, 2015
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)
7 FUNCTIONS
58
7.1 Hardware Logic Control Function
to
b8 b7
Error code
Last two digits of the year
Month
Hour
Second
System area
Description
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
b0
to
Day
Minute
Day of the week
*1
Storage example
2015H
0424H
1035H
40H
5H