CET Electric Technology
67
1058
RW
kVAh of T5
INT32
x0.1
kVAh
1060
RW
kWh Import of T6
INT32
x0.1
kWh
1062
RW
kWh Export of T6
INT32
1064
RW
kvarh Import of T6
INT32
x0.1
kvarh
1066
RW
kvarh Export of T6
INT32
1068
RW
kVAh of T6
INT32
x0.1
kVAh
1070
RW
kWh Import of T7
INT32
x0.1
kWh
1072
RW
kWh Export of T7
INT32
1074
RW
kvarh Import of T7
INT32
x0.1
kvarh
1076
RW
kvarh Export of T7
INT32
1078
RW
kVAh of T7
INT32
x0.1
kVAh
1080
RW
kWh Import of T8
INT32
x0.1
kWh
1082
RW
kWh Export of T8
INT32
1084
RW
kvarh Import of T8
INT32
x0.1
kvarh
1086
RW
kvarh Export of T8
INT32
1088
RW
kVAh of T8
INT32
x0.1
kVAh
Table 5-23 Monthly Energy Log
Notes:
1)
This register represents the Month when it is read. To read the Monthly Energy Log, this register must be first written to
indicate to the device which log to load from memory. The range of this register is from 0 to 12, which represents the
Present Month and the Last 12 Months. For example, if the current month is 2016/10, “0” means 2016/10, “1” means
2016/09, “2” means 2016/08, etc., and ”12” means “2015/10”.
2)
For each Monthly Energy Log, the time stamp shows the exact Self-Read Time (20YY/MM/DD HH:MM:SS) when the log
was recorded. For the Monthly Energy Log of the Present Month, the time stamp shows the current time of the meter
because the Present Month is not yet over.
3)
The Monthly Energy Log for the Present Month can be modified, but the Monthly Energy Logs for the Last 12 Months are
Read Only.
5.8 Daily and Monthly Freeze Logs
5.8.1 Daily Freeze Log
Register
Property
Description
Format
Scale
Unit
12000
RW
Index
1
INT16
1 to 60
12001
RO
High-order Byte: Year (0-99)
Low-order Byte: Month (1-12)
INT16
-
12002
RO
High-order Byte: Day (1-31)
Low-order Byte: Hour (0-23)
INT16
12003
RO
High-order Byte: Minute (0-59)
Low-order Byte: Second (0-59)
INT16
12004
RO
kWh Total
INT32
x0.1
kWh
12006
RO
kvarh Total
INT32
x0.1
kvarh
12008
RO
kVAh Total
INT32
x0.1
kVAh
12010
RO
Peak Demand of kW Total
Float
x1
W
12012
RO
Peak Demand of kvar Total
Float
x1
var
12014
RO
Peak Demand of kVA Total
Float
x1
VA
Table 5-24 Daily Freeze Log
Note:
1)
Writing a value N between 1 and 60 to the Index register to retrieve the Daily Freeze Log of the N
th
entry. For example,
writing 1 to the Index register will retrieve yesterday’s Daily Freeze Log. If N = 0 or N > 60, an exception response will be
returned with the Illegal Data Value error code (0x03) as defined by the Modbus protocol. If all the returned values of the
N
th
Log Record (where 1 ≤ N ≤ 60) are all 0 (including the timestamp), this indicates that the returned Log Record is invalid
and that the end of the Log has been reached. If the software is reading the Log for the very first time, it should start with
N=1 and stop when either N=60 or when the returned Log Record is invalid. After that, all the software has to do is to read
the Log on a daily basis with N=1.
5.8.2 Monthly Freeze Log
Register
Property
Description
Format
Scale
Unit
12500
RW
Index
1
INT16
1 to 36
12501
RO
High-order Byte: Year (0-99)
Low-order Byte: Month (1-12)
INT16
-
12502
RO
High-order Byte: Day (1-31)
Low-order Byte: Hour (0-23)
INT16
12503
RO
High-order Byte: Minute (0-59)
Low-order Byte: Second (0-59)
INT16
12504
RO
kWh Total
INT32
x0.1
kWh