Hitachi WJ C1 Series

Chapter 11 RS485 Communication
11-2-15
Example of holding register write query/response for each endian selection
 When the endian selection is set to Big Endian, Little Endian, or Special Endian, write multiple
holding registers [10h], and write "Deceleration time 1 setting or monitor, 1st motor [F003]" =
3000 seconds of "2 register length parameter" and "RUN-key command rotation direction
[F004]" = 01 (forward) of 1 register length data, the following is an example of a query.
Query
Endian
No.
Field name
Big
Little
Special
1
Slave address
01
01
01
2
Function code
10
10
10
3
Register start number (High)
11
11
11
4
Register start number (Low)
04
04
04
5
Number of registers (High)
00
00
00
6
Number of registers (Low)
03
03
03
7
Number of bytes
06
06
06
8
Write data 1 (High)
00
E0
93
[F003] is "2 register length
parameter" and the resolution is
0.01 seconds, so write data is
3000.00 seconds
=300000d=000493E0h.
9
Write data 1 (Low)
04
93
E0
10
Write data 2 (High)
93
04
00
11
Write data 2 (Low)
E0
00
04
12
Write data 3 (High)
00
01
00
[F004] = For forward rotation,
written data is 0001h
13
Write data 3 (Low)
01
00
01
14
CRC-16 (High)
EB
65
EB
15
CRC-16 (Low)
DB
B4
DD
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