384
7-3-6 MODBUS Master
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
Selectable: 300/600/1200/2400/4800/9600/19200/34800/57600/115200 bps.
MODBUS Protocol
Half-duplex
Up to 15 meters
Non-isolated: 50 m.; Isolated: 1 km.
1 Slave station only
Max. 247 stations (For more than 32, add
repeater(s) in the circuit is required)
CP1: Main Unit built-in
CP2~CP5: VS-D485-EC, VS-D485A-EC
CP2, CP4: VS-485-EC, VS-485A-EC, VS-D52A-EC(CH1)
CP3, CP5: VS-ENET-EC(CH2)
VS Series PLC (including VS1, VS2, VSM and VS3)
All the X, Y, M, S, T, C, D, R are included
Item
Specification
RS-485RS-232Communication Interface
Communication Protocol
Commection Method
Communication Paramete
Baud Rate
Distance
No. of Slave Stations
Linking Equipment
Available Model
Transferable Device
CP2~CP5: VS-D232-EC
CP3, CP5: VS-D52A-EC(CH2)
Format: ASCII or RTU; bits-per-character: 7 bits / 8 bits;
parity check: None / Even / Odd; stop bit: 1 bit / 2 bits
Many automation devices and equipment (e.g. inverters, temperature controllers) support the “MODBUS protocol”.
Hence, the VS PLC provides the MBUS instruction and MBUS communication table, that cooperatively produces the
MODBUS commands to access devices which possess the MODBUS communication function, to serve the purpose of
exchanging data between the PLC and these devices.
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”.
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