The flow for selecting the function number from the access method is shown below.
1. Select the communication type.
For
⇒
SJ-Ether, you can select the general-purpose serial communication port (Port2) and the general-purpose Ethernet communication port (Port3).
2. To select read/write
Select whether to read data from the slave station or to write data to the slave station.
3. Selection of Access Data Type
Select
⇒
Data type to be accessed by the slave station.
4. Data size selection
When
⇒
MWX or EWX, select one bit or more and one word or one or more.
1. Communication
type
2. To select read/write
Determination of
the command word
3. Selection of Access Data Type
4. Data size selection
Establishment of function code
Serial
communication
(MODBUS/RTU)
Reading
(Reading
Data
from
Slave
Stations)
Select
Instruction
MRX
Device data is GQ, Q, M, S, T, C
MDSK outputs, short circuits (resets), and reboots
⇒
01(Reading Output Status)
Device data is GI, I, SP
MDSK inputs and short circuits
⇒
02(Reading Input Status)
Device data are R, RGQ, RQ, RM, RS, RT, RC, RGI, RI, RSP
MDSK short circuit, short circuit history, products information,
and inputs
⇒
03(Read Retention Register) or
04(Reading Input Register)
Writing
(Writing Data to Slave Station)
Select
instruction
MWX
Device data is GQ, Q, M, S, T, C
MDSK outputs, short circuits (resets), and reboots
1 bit
05(Forcing of a Single Coil)
1 bit or more
15(Forcing multiple coils)
For device data
R,RGQ,RQ,RM,RS,RT,RC,RGI,RI,RSP
MDSK short circuit (reset), reboot, setting information, and
output
One word
06(preset of a single register)
1 word or more
16(Preset
of
Multiple
Example
Studors)
Ethernet
communication
(MODBUS/TCP)
Reading
(Reading
Data
from
Slave
Stations)
Select
command
ERX
Device data is GQ, Q, M, S, T, C
MDSK outputs, short circuits (resets), and reboots
⇒
01(Reading Output Status)
Device data is GI, I, SP
MDSK inputs and short circuits
⇒
02(Reading Input Status)
Device data are R, RGQ, RQ, RM, RS, RT, RC, RGI, RI, RSP
MDSK short circuit, short circuit history, products information,
and inputs
⇒
03(Read Retention Register) or
04(Reading Input Register)
Writing
(Writing Data to Slave Station)
Select
command
EWX
Device data is GQ, Q, M, S, T, C
MDSK outputs, short circuits (resets), and reboots
1 bit
05(Forcing of a Single Coil)
1 bit or more
15(Forcing multiple coils)
For device data
R,RGQ,RQ,RM,RS,RT,RC,RGI,RI,RSP
MDSK short circuit (reset), reboot, setting information, and
output
One word
06(preset of a single register)
1 word or more
16(Preset
of
Multiple
Example
Studors)
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...
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Page 13: ...1...
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Page 113: ...3 24 Note Refer to 6 3 3 Module Assembly for connections and locks between modules...
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Page 156: ...flashing OFF Not sent H W RX Green flashing Receiving H W OFF Not received H W...
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Page 310: ...Chapter 7 Maintenance...
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