Hitachi WJ200-001S Instruction Manual page 588

Example4: When writing several parameters at the same time (16-bit data (Word Data) and 32-bit data
(Double Word Data))
When several parameters are involved, parameter data are sent in order of register address value. (F003 is
sent first, followed by F004)
The arrangements of data in each parameter are subject to the Endian setting.
With slave one inverter, if you would like to set 3000.00sec to Deceleration time (1) (F003, register
numbers are 1105, 1106), the data resolution of the Holding registers is 0.01sec, so 30000d=000493E0h
should be written. And at the same time if you would like to write 01h to Keypad Run key routing (F004,
register number is 1107).
Example 4-1:
Query (Big Endian):
No Field Name
1 Slave address
2 Function code
3 Start address (high byte)
4 Start address (low byte)
5 Number of holding registers
(high byte)
6 Number of holding registers
(low byte)
7 Byte number
8 Change data 1 (high byte)
9 Change data 1 (low byte)
10 Change data 2 (high byte)
11 Change data 2 (low byte)
12 Change data 3 (high byte)
13 Change data 3 (low byte)
14 CRC-16 (high byte)
15 CRC-16 (low byte)
Notice the data from eighth to thirteenth.
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.")
Note) When several parameters are involved, the order of parameter does not change.
The Endian function is applied to data in each parameter
Example
(Hex)
01
10
Register address value = Register
11
Number - 1
04
00
03
06
F003 Write data:
00
000493E0h
04
93
E0
F004 Write data
00 01h
01
EB
DB
Ver.3− − − − 79
The order of
parameters is not
affected by the
Endian setting.