Hitachi WJ200-001S Instruction Manual page 586

Example3: When writing 16-bit data
This Query sets 50.00Hz to the low byte of Multi-speed freq. 0(A020, register numbers are 1216 and 1217)
of slave one inverter.
But the data resolution of the Holding registers is 0.01Hz, so the data to be written is 5000d=1388h.
Example3-1:
Query (Big Endian) :
No
1 Slave address
2 Function code
3 Register start address (high byte)
4 Register start address (low byte)
5 Change data (high byte)
6 Change data (low byte)
7 CRC-16 (high byte)
8 CRC-16 (low byte)
Notice the data from fifth to sixth.
Write data (Change data) are subject to the Endian function.
(As for the data arrangements of Big Endian, please refer to "[2] How data are arranged by each endian.")
Example3-2:
Query (Little Endian) :
No
1 Slave address
2 Function code
3 Register start address (high byte)
4 Register start address (low byte)
5 Change data (high byte)
6 Change data (low byte)
7 CRC-16 (high byte)
8 CRC-16 (low byte)
Notice the data from fifth to sixth.
Write data (Change data) are subject to the Endian function.
(As for the data arrangements of Little Endian, please refer to "[2] How data are arranged by each
endian.")
Field Name
Field Name
Example
(Hex)
01
06
12 Register address value = Register
Number - 1
16
13
A020
88
Data:
60
20
Example
(Hex)
01
06
12
Register address value = Register
16
Number - 1
88
A020 Write Data:
13
1388h
4A
4B
Ver.3− − − − 77
Write