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8.3 Relay control
The functional code is 05H.
In this mode, only individual relay can be controlled. The status of a relay can be obtained by
reading the relay status register. The relay address starts from 0 in the register. The address of
relay 1 is 0, and the rest may be deduced by analogy. Sending sexadecimal FF 00 closes a relay
and sending sexadecimal 00 00 releases a relay. All the other values will be invalid.
Control relay format
(Main station
→
PMAC735)
Response format
(
PMAC735
→
main station
)
Slave station address
1 byte
Slave station address
1 byte
Functional code 05H
1 byte
Functional code 05H
1 byte
Channel address
2 bytes
Channel address
2 bytes
Control command
2 bytes
Control command
2 bytes
CRC check code
2 bytes
CRC check code
2 bytes
Содержание PMAC735
Страница 7: ...7 1 1 Pictures of the main unit Side view Rear view 1 2 Picture of the extension module Rear view...
Страница 18: ...18 B Low voltage 3 phase 3 wire delta connection 3 CTs C Low voltage 3 phase 3 wire delta connection 2 CTs...
Страница 19: ...19 D High voltage 3 phase 4 wire star connection E High voltage 3 phase 3 wire delta connection 3 CTs...
Страница 32: ...32 4 2 7 Frequency Press the key once and you will see the frequency data S1 S2 S3 S4 RL1 RL2 RL3 RL4...