Delta DPM-MA1121, Руководство пользователя

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D e lt a M u lt i- C ir c u i t P o w e r M e t e r D P M - M A11 2 1 U s e r M a n u a l
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MODBUS
Address
Item Range
Data
Type
Unit BYTE
Read(R)/
Write(W)
Hex
Modicom
Format
203 400516
Reading status code
0: Clear all record datas
(Reset reading index)
1: Abort current read
2: Read success
word 2
W
The length of each data record can be obtained by reading the length address (0x200) of each record. The data length
obtained is read through the data reading address (0x202), as shown in the figure below:
The data content will be returned in the following format:
Address Code
Byte
Count
Voltage Unit
Current Unit Power Unit Year Month
Hi Lo Hi Lo Hi Lo Hi Lo Hi Lo
01h 03h 30h 00h 00h 00h 01h 00h 02h 07h E1h 00h 0Ch
Day Hour Minute Second
Data
CRC
Hi Lo Hi Lo Hi Lo Hi Lo Lo Hi
00h 01h 00h 0Dh 00h 19h 00h 2Ah ………………………… xxh xxh
Byte Count: Read from 0x200
Date: 2017/12/01 => 07E1H/000CH/0001H
Time: 13:25:42 => 000DH:0019H:002AH
Each read order can only read a log record. Reading unread number (0x201) shows how many logs remain unread.
If there is no record that has not been read yet, then the data return will be 0x20h, indicating that the data record has been
read.
After reading a record of log must be send back the read status(0x203) to meter, as a basis for recording indicators
move. It can also give up the record read or clear data records via send back the read status.