WECON PLC

LX3V Serial Protocol

Supported series: WECON LX2V/ LX2E/ LX3V/LX3VP/LX3VE/LX3VM

1）PLC Settings

2）PLC Address List

3）Configure the communication protocol

4）hardware connection

• RS422

• RS485

LX5V Serial Protocol

This example introduces the establishment of serial port communication between V-BOX and LX5V. It is introduced through three parts: PLC software configuration, V-BOX software configuration, and hardware wiring.

Software configuration of PLC

1）PLC programming software

2）New PLC project

Click New Project and select the PLC model.

3）Set Serial port parameters

Follow the steps below to configure Serial port parameters

Baud rate：115200

Data bit：8

Stop bit：1

Parity：No verification

4）Registers list

V-BOX software configuration

1）V-BOX programming software

2）V-NET add device

Open V-NET client software → add device. As shown in the figure below, click "+" in the order of steps, and the Add Device window will pop up, enter the access key, password and remark, to add the device.

3）Set communication port parameters

Click the communication configuration button on the left to find the communication protocol with LX5V. After selecting the protocol, configure the communication parameters of the COM port.

Baud rate：115200

Data bit：8

Stop bit：1

Parity：No verification

hardware connection

1）Hardware wiring diagram

The above are all the steps for establishing serial port communication between V-BOX with LX5V PLC.

LX5V-N Ethernet protocol

This example introduces the establishment of Ethernet communication between V-BOX and LX5V-N. It is introduced through three parts: PLC software configuration, V-BOX software configuration, and hardware wiring.

Software configuration of PLC

1）PLC programming software

2）New PLC project

Click New Project and select the PLC model.

3）Set Ethernet port parameters

Follow the steps below to configure Ethernet parameters

PLC IP address：192.168.39.200

default gateway：192.168.39.1

subnet mask：255.255.255.0

4）Registers list

 V-BOX software configuration

1）V-BOX programming software

2）V-NET add device

Open V-NET client software → add device. As shown in the figure below, click "+" in the order of steps, and the Add Device window will pop up, enter the access key, password and remark, to add the device.

3）Set communication Protocol

Click Communication to configure the LX5V plc protocol and IP address.

hardware connection

1）Hardware wiring diagram

The above are all the steps for establishing ethernet communication between V-BOX with LX5V PLC.

Rockwell PLC

 MicroLogix Protocol

MicroLogix 1000/1100/1200/1400/1500; SLC 5/03 5/04 5/05 PLC-5

HMI Settings

Address List

Cable Wiring

CompactLogix Protocol

S7-1200 Ethernet Protocol

download link

Mitsubishi PLC

Mitsubishi FX Series Protocol

download link

Delta PLC

DVP Ethernet Protocol

download link

DVP Serial Protocol

download link

Omron PLC

CP1 Series Protocol

download link

CJ2M Series Protocol

download link

Modbus RTU

V-BOX as master

Select the protocol “Modbus RTU Slave(All Fuction)”,

then set BaudRate,Port,Stop Bit,Data Bit,Parity

V-BOX as slave

Select the protocol “Modbus RTU Master”,

then set BaudRate,Port,Stop Bit,Data Bit,Parity

Address List

communicate with VB inverter

download link

User define protocol

More serial port script instruction,please refer manual:Lua script function--->3.Serial port operation

Read the temperature sensor.

the commond format is as beliow:

Send commond:01 03 02 00 00 03 04 73

Feedback commond:01 03 06 07 F7 0E 7E B7 35

Temperature data:07 F7,desimal = 2039,it means temperature is 20.39℃.

Humidity data:0E 7E,desimal = 3710, it mean humidity is 37.10%RH.

Script Demo:

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function com.main()
   --dosomething
   openPlc()
 end
 function openPlc()
     if obj then
         -- If the serial port opened,then read/write data by timing

            local wri = string.pack(">HHHH",0X0103,0X0200,0X0003,0X0473)
             local arr = reading(wri)
             -- if arr ~=nil then
             --     if arr[1] ==33 and arr[2] ==v[2][2] and arr[3] ==v[2][3] then
             --         local A = arr[4]*256
             --         local B = A+arr[5]
             --         addr_setword(v[1],B)
             --     end
             -- end

     else
         --judge if there is a serial object, then initialize and open the serial port
        local configs = {
             name = 'COM1',      --Select serial port COM1
             mode = 485,         --Communication mode RS485
             baud_rate = 9600,   --Baud rate 9600
             stop_bit = 1,       --stop bit 1
            data_len = 8,       --data length 8
            check_bit = 'NONE', --no parity

        }
         obj,err = serial.open(configs) --Open serial port
        if not obj then
          print("serial open :failed", err) -- Open serial port failed
                end
     end
 end

 function reading(wri)
     obj:flush() -- Clear serial port
    obj:write(wri)  -- Write serial port
    print(string.byte(wri,1,#wri))
     obj:flush() -- Clear serial port 
    local readed =obj:read(9,1000) -- Read 9 bytes, timeout 1 second
    if readed and readed ~= "" then 
         -- judge that a non-empty string is read
        print(string.byte(readed,1,#readed))
         a={string.byte(readed, 1, #readed)}
       if nil ~= a[4] and nil ~= a[5] and nil ~= a[6] and nil ~= a[7] then
         a1=a[4]*256+a[5]
         a2=a[6]*256+a[7]
         addr_setword("@HDW0",a1)
         addr_setword("@HDW1",a2)
       end
         return {string.byte(readed, 1, #readed)}
     elseif readed == nil then
         print("serial read err:", err or "")
         return nil
     end
     return nil
 end

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