Mitsubishi Electric Melsec Q Series User Manual page 67

6 Buffer memory
6.3.20 Year of time of the max. electric power demand (Un \ G422),
month and day of time of the max. electric power demand (Un \ G423),
hour and minute of time of the max. electric power demand (Un \ G424),
second and day of the week of time of the max. electric power demand (Un \ G425),
year of time of the min. electric power demand (Un \ G428),
month and day of time of the min. electric power demand (Un \ G429),
hour and minute of time of the min. electric power demand (Un \ G430),
second and day of the week of time of the min. electric power demand (Un \ G431)
Stores year, month, day, hour, minute, and the day of the week of time of maximum value of electric
power demand (Un\G420, 421) and minimum value of electric power demand (Un\G426, 427) were
updated.
(1) Details of stored data
(a) Storage format
As indicated below, data are stored as BCD code in the buffer memory.
Buffer memory address
(b) Update timing
It will be updated every measuring cycle (250 ms) if it exceeds the current max. value or goes
under the current min. value.
b15
Un\G422
/Un\G428
b15
Un\G423
/Un\G429
b15
Un\G424
/Un\G430
b15
Un\G425
/Un\G431
Storage format
b12 b11 ～ b8 b7 ～ b4 b3
～
Year
b12 b11 ～ b8 b7 ～ b4 b3
～
Month Day
b12 b11 b8 b7 b4 b3
～ ～ ～
Hour Minute
b12 b11 ～ b8 b7 ～ b4 b3
～
Second 0 fixed
6 – 25
～ b0
e.g.) Year 2010
2010h
～ b0
e.g.) July 30
0730h
～ b0
e.g.) 10:35
1035h
～
b0
e.g.) 48sec Friday
4805h
Day of the week
曜日
0 Sunday
0 日
1 Monday
1 月
2 Tuesday
2 火
3 Wednesday
3 水
4 Thursday
4 木
5 Friday
6 Saturday
5 金
6 土
QE81WH