Mitsubishi Electric MELSEC-Q series User Manual page 137

(49)Latest address of error history (Un\G1800)
The start address of the latest error history is stored.
For details on the error history function, refer to the following.
• Error History Function (
(50)Error history No.  (Un\G1810 to Un\G1969)
Up to 16 errors occurred in the module are recorded.
For details on the error history function, refer to the following.
• Error History Function (
Un\G1810
Un\G1811
Un\G1812
Un\G1813
Un\G1814
Un\G1815
Un\G1819
Item
First two digits of the
year/Last two digits of the
year
Month/Day
Hour/Minute
Second
Day of the week
*1 Those are values when an error occurs at 10:35:40 on Tuesday, March 29th, 2011.
(51)CH Logging data (Un\G5000 to Un\G44999)
These are the areas for storing the logged data for each channel. Up to 5000 data can be stored per channel.
After the 5001st data for CH Logging data (Un\G5000 to Un\G44999) for each channel, the logging is continued
with the data overwritten from the head.
For details on the logging function, refer to the following.
• Logging Function (
● When Operating condition setting request (Y9) is turned on then off, the logging data in all the channels are cleared.
● Even if CH Logging hold request (Un\G1008 to Un\G1015) is turned OFF (0) and the logging resumes, the logged data
is not cleared.
Page 72, Section 4.15)
Page 72, Section 4.15)
to
b15
Error code
First two digits of the year
Month
Hour
Second
System area
Storage contents
Stored in BCD code.
One of the following values is stored for each day of the week in BCD
code.
• Sunday: 00
• Tuesday: 02
• Thursday: 04
• Saturday: 06
Page 58, Section 4.12)
b8 b7
to
Last two digits of the year
Day
Minute
Day of the week
• Monday: 01
• Wednesday: 03
• Friday: 05
CHAPTER 6 BUFFER MEMORY
b0
Storage
*1
example
2011
H
329
H
1035
H
40
H
02
H
135
6