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8.4 Register reading
The functional code is 03H.
The main station can read one or more than one register values, and the register return values not
defined are 0.
Read register format
(
Main station
→
PMAC735
)
Response format
(
PMAC735
→
main station
)
Slave station address
1 byte
Slave station address
1 byte
Functional code 03H
1 byte
Functional code 03H
1 byte
Start address
2 bytes
Byte number (2
×
number of
registers)
1 byte
Number of registers
2 bytes
Data of the first register
2 bytes
CRC check code
2 bytes
Data of the second register
2 bytes
…………
CRC check code
2 bytes
Note: The values of up to 45 registers can be read at one time.
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...