7
Address Function Byte Number
Word Data
CRC-16
01 04
02
001B
F93B
6.3 Write-in of Word Data (1 word) [Function Code: 06]
1. Message composition
Command message composition
Response message composition
2. Message transmission (example)
The following show an example of writing the Setpoint Value to address No.1 controller.
Command message composition
Address Function Starting Address
Word Data
CRC-16
01 06
0000
01F4
89DD
Response message composition
Address Function Starting Address
Word Data
CRC-16
01 06
0000
01F4
89DD
7. ADDRESS MAP AND DATA FORMAT
7.1 Data Format
1. Transmission data format
The MODBUS protocol used in this instrument (SE series) is RTU (Remote Terminal Unit)
mode.
Transmitted data is “numeric value” and not “ASCII code”.
2. Internal calculation value and engineering unit
There are 3 different kinds of set value in the SE series controllers.
1. Normal
value:
The data value is transfer into Hexadecimal regardless of decimal. For example:
1000
℃
will be transfered to 03E8(hex), However, such as output percentage and
Pb (proportional band), 100.0 % will be transfered to 03E8(hex).
2. Index
code:
Some parameters value are set by index code. For example, to change the unit to
℃
via communication. The data value would be 0017(hex).
Code English Code English Code English Code English
00
J
0F
ENG
1E
9.6K
2D
1101
01
K
10
0000
1F
19.2K
2E
1110
02
T
11
000.0
20
0000
2F
1111
03
E
12
00.00
21
0001
30
HI
04
B
13
0.000
22
0010
31
LO
05
R
14
REV
23
0011
32
DIF.H
06
S
15
DIR
24
0100
33
DIF.L
07
N
16
NONE
25
0101
34
BD.HI
08
C
17
STDY
26
0110
35
BD.LO
09
D-PT
18
LATH
27
0111
36
T.ON
0A
J-PT
19
ST.LA
28
1000
37
T.OFF
Address Function Starting Address Word Data
CRC-16
1 ~ FF
06
0xxx
0xxx
Low-order byte High-order byte
1 byte 1 byte
2 bytes
2 bytes
2 bytes
Address Function Starting Address Word Data
CRC-16
1 ~ FF
06
0xxx
0xxx
Low-order byte High-order byte
1 byte 1 byte
2 bytes
2 bytes
2 bytes