AccuEnergy Acuvim II, Руководство пользователя

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191
of the register, after all the bytes of the message have been applied, is the
CRC value. When the CRC is appended to the message, the low-order byte is
appended first, followed by the high-order byte.
6.2 Communication Format
Explanation of frame
Addr Fun
Data start
reg HI
Data start
reg LO
Data #of
regs HI
Data #of
regs LO
CRC 16
HI
CRC 16
LO
06H 03H 00H 00H 00H 21H 84H 65H
Table 6-3 Explanation of frame
The meaning of each abbreviated word is:
Addr: Address of slave device
Fun: Function code
Data start reg HI: Start register address high byte
Data start reg LO: Start register address low byte
Data #of reg HI: Number of register high byte
Data #of reg LO: Number of register low byte
CRC16 HI: CRC high byte
CRC16 LO: CRC low byte
1. Reading Relay Status
Function Code 01
This function code is used to read the status of the relay in the meter.
1=On 0=Off
Relay1’s address is 0000H, Relay2’s address is 0001H, and so on.
The following query is to read the relay status for the meter with communication
address 17.
Shop for Power Metering products online at:
1.877.766.5412
www.
PowerMeterStore
.com