4-20
(4)
List of MODBUS Supported Commands
The commands supported by SJ-Ether PLC are listed below.
Modbus
Function code
Feature
Available
From SJ
Ether
Data type
Server mode
(Slave
Mode
Client-mode
Master mode
MRX/MWX
RX/WX
01
Read Coils
(Bit Data Q, M, T, C, S, GQ read)
Q,M,T,C,
S,GQ
Correspondenc
e
Correspond
ence
Correspo
ndence
02
Read Discrete Inputs
(Bit Data I, SP, GI Read)
I,SP,GI
Correspondenc
e
Correspond
ence
Correspo
ndence
03
Read Holding Registers
(Register Data R Read)
R
Correspondenc
e
Correspond
ence
Correspo
ndence
04
Read Input Registers
(Register Data R Read)
R
Correspondenc
e
Correspond
ence
Correspo
ndence
※
1
05
Write Single Coil
(Bit Data Q, M, T, C, S, GQ)
Q,M,T,C,
S,GQ
Correspondenc
e
Correspond
ence
Not
supporte
d
06
Write Single Register
(Register Data R Write)
R
Correspondenc
e
Correspond
ence
Not
supporte
d
07
Read Exception Status
Read the top 8 points
(Bit Data Q0 to Q7 1 byte Data Read)
Q
Correspondenc
e
Correspond
ence
Not
supporte
d
08
Diagnostics
Not supported
Not
supported
Not
supporte
d
15
Write File Record
(Bit Data Q, M, T, C, S, GQ)
Q,M,T,C,
S,GQ
Correspondenc
e
Correspond
ence
Correspo
ndence
16
Mask Write Register
(Register Data R Write)
R
Correspondenc
e
Correspond
ence
Correspo
ndence
※
When the 1:RX command is used, the function code is switched from 03 to 04 by adding the number "4" to the digit at the top of the data
size setting.
Summary of Contents for Kostac SJ-Ether Series
Page 1: ...English version of the KOSTAC SJ Ether series user s manual SJ ETHER USER M...
Page 12: ......
Page 13: ...1...
Page 14: ......
Page 88: ......
Page 89: ......
Page 113: ...3 24 Note Refer to 6 3 3 Module Assembly for connections and locks between modules...
Page 153: ......
Page 156: ...flashing OFF Not sent H W RX Green flashing Receiving H W OFF Not received H W...
Page 161: ...4 8...
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Page 310: ...Chapter 7 Maintenance...
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