AccuEnergy AcuDC 210 Series, Руководство пользователя

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AcuDC 210/220 Series
3. Read Data (Function Code 03)
Query
This function allows the master to obtain the measurement results from the meter.
Table 4.8 is an example to read the measured data from slave device number 1, the
data address for voltage V is 0200H.
Addr Fun
Data start
addr HI
Data start
Addr LO
Data # of
regs HI
Data # of
regs LO
CRC16
HI
CRC16
LO
01H 03H 02H 00H 00H 01H 85H B2H
Response
The meter response includes the meter address, function code, quantity of data
byte, data, and error checking. An example response to read V=0001H (0.01V) is
shown in Table 4.9.
Addr Fun
Byte
count
Data
HI
Data
LO
CRC16
HI
CRC16
LO
01H 03H 02H 00H 01H 79H 84H
Table 4.8 Read V Query Message
Table 4.9 Read V Message