AccuEnergy AcuRev 1200 Series, User Manual

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The response data frames:
Response data frames, respond to the host data from the machine frame. Include
address, function code, the amount of data from the machine and CRC error checking, and
packet in each relay occupy a (1 = ON, 0 = OFF), the first byte of the lowest for addressing
to relay value, the rest in the back.As shown in table 5-5 for instance relay output state
response.
Table 5-8 Read the State of theRelay Response Data
Addr Fun Byte count Data
CRC16
HI
CRC16
LO
11H 01H 01H 02H D4H 89H
The Data byte content
7 6 5 4 3 2 1 0
0 0 0 0 0 0 1 0
4. Control relay output (functional code 5 h)
Query data frames:
The data frame to set up an independent relay is ON or OFF.Data FF00H will check
relay for state, while 0000 h will set the relay for the OFF state; All other values are ignored,
and shall not affect the relay state.
The following example is a request from machine set the relay 1 to 17 ON state.
MSB
LSB (Relay 1 = OFF , Relay 2=ON)