User manual

97
POWER INSTRUMENTS
The example below is a request to meter number 17 to turn on Relay1.
Addr Fun DO addr
hi
DO addr
lo
Value
hi
Value
lo
CRC 16
Hi
CRC 16
Lo
11H 05H 00H 00H FFH 00H 8EH AAH
Table5.10 Control Relay Query Message
Response
The normal response to the command request is to retransmit the message
as received after the relay status has been altered.
Addr Fun Relay addr
hi
Relay addr
lo
Value
hi
Value
lo
CRC
Hi
CRC
Lo
11H 05H 00H 00H FFH 00H 8EH AAH
Table5.11 Control Relay Response Message
5. Preset / Reset Multi-Register (Function Code 16)
Query
Function 16 allows the user to modify the contents of a Multi-Register.
Any Register that exists within the meter can have its contents changed by
this message. The example below is a request to number 17 to Preset Ep_
imp=(17807783.3KWH), while its Hex Value 0A9D4089H. Ep_imp data address
is 0156H and 0157H.
Addr Fun Data start
register hi
Data start
register lo
Data
register hi
Data
register lo
Byte
count
Value
high
Value
lo
Value
hi
Value
lo
CRC
hi
CRC
lo
11H 10H 01H 56H 00H 02H 04H 0AH 9DH 40H 89H 4DH B9H
Table5.12 Preset KWH Query Message