361
CPU LINK
St. #1
CPU LINK
St. #2
RS- 485
CPU LINK
St. #1
CPU LINK
St. #2
CPU LINK
St. #n
RS- 232
VS series
PLC
VS series
PLC
VS series
PLC
VS series
PLC
VS series
PLC
The MODBUS Master
When the VS PLC’s communication port has been set to the application type of the “MODBUS Master”, it cooperates
with the MBUS instruction and a MODBUS communication table to operate communication procedures. This Master
links and communicates with MODBUS Slaves (such as inverters, temperature controllers, power meters, etc.)
through the “MODBUS protocol”.
RS- 232
MODBUS
Master
MODBUS
Master
RS- 485
VS series
PLC
VS series
PLC
Provided with
MODBUS
protocol
Digital scale,
Electric board,
Barcode reader
Provided with
MODBUS
protocol
Provided with
MODBUS
protocol
Inverter
Temperature
controller
The CPU Link
The VS Series PLC uses this application to share instant data between VS PLCs to serve the purpose of distributed
control.
When the communication ports of VS PLCs have been set the application for to share instant data between PLCs,
select one of the PLC to cooperate with the CPUL instruction and CPUL communication table, through its particular
protocol to share instant data.
The Non Protocol communication
When the VS PLC’s communication port has been set to the application type of the “Non Protocol”, the PLC does not
execute any specied communication protocol. All communication procedures are operated by the PLC's user
program. Then the RS instruction is used to receive and send out data in order to complete the communication
operation. This application type is often applied to communicate between PLC and peripheral, such as temperature
controllers, inverters and barcode readers.
A variety of peripheral equipment in the market
RS- 232
RS- 485
Inverter
Temperature
controller
Barcode reader
VS series PLC
Application type:
Non Protocol
Edit the communication
program for
corresponding equipments
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