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The data set in the response is as follows:
Response Buffer 4-5 6-7 8-9
Register Number 12+0 (high
order)
12+0
(low
order)
12+1
(high
order)
12+1 (low
order)
12+2
(high
order)
12+2 (low
order)
Register Data 0003h 00h 00h 0063h
Trip data Trip factor (E03) Not used Frequency (9.9Hz)
Response Buffer 10-11 12-13 14-15
Register Number 12+3 (high
order)
12+3
(low
order)
12+4
(high
order)
12+4 (low
order)
12+5
(high
order)
12+5 (low
order)
Register Data 00h 00h 001Eh 011Ch
Trip data Not used Output current (3.0A) DC-bus voltage (284V)
When the Read Holding Register command cannot be executed normally, refer to the
exception response.
W
rite in Coil [05h]:
This function writes data in a single coil. Coil status changes are as follows:
Coil Status
Data
OFF to ON ON to OFF
Change data (high order) FFh 00h
Change data (low order) 00h 00h
An example follows (note that to command the inverter, set A002=03):
x Sending a RUN command to an inverter having slave address “8”
x This example writes in coil number “1.”
Query: Response:
No. Field Name
Example
(Hex)
No. Field Name
Example
(Hex)
1 Slave address *1 08 1 Slave address 08
2 Function code 05 2 Function code 05
3 Coil start address *2
(high order)
00 3 Coil start address *2
(high order)
00
4 Coil start address *2
(low order)
00 4 Coil start address *2
(low order)
00
5 Change data
(high order)
FF 5 Change data
(high order)
FF
6 Change data
(low order)
00 6 Change data
(low order)
00
7 CRC-16 (high order) 8C 7 CRC-16 (high order) 8C
8 CRC-16 (low order) A3 8 CRC-16 (low order) A3
Note 1: No response is made for a broadcasting query.
N
ote 2: The PDU Coils are addressed starting at zero. Therefore coils numbered 1-31
are addressed as 0-30. Coil address value (transmitted on Modbus line) is 1
less than the Coil Number.
When writing in a selected coil fails, see the exception response.
B12
Appendix B
B 12
Appendix B