383
RS- 485
MODBUS
protocol
MODBUS
Slave
RS- 232
MODBUS
protocol
MODBUS
Slave
MODBUS
Slave
VS series
PLC
VS series
PLC
VS series
PLC
HMI
or
SCADA
HMI
or
SCADA
7-3-5 MODBUS Slave
MODBUS is a very popular communication protocol on the market. Various common industrial products such as the
human-machine interface (HMI) or the supervisory control and data acquisition system (SCADA) all support the
“MODBUS protocol”. Nonetheless, if the selected HMI or SCADA does not support the “VS Protocol”, use the
“MODBUS protocol” to connect it with the VS Series PLC’s.
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
Set the application type:
MODBUS Slave
Set the corresponding parameters
in the sheet
The MODBUS Mapping can be
expanded to get the VS PLC’s
components
※ Usually the default delay response time is not necessary to change, except that:
When the communication mistake is caused by the signal collision in the circuit, try to extend the delay response
time.
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