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02 Introduction

Last modified by Mora Zhou on 2024/12/05 15:52

PLC host composition

According to the different hardware structure, PLC could be divided into main unit, expansion module and BD board.

WECON PLC has the built-in battery, CPU and I/O points. The PLC CPU could connect with I/O expansion modules to expend the I/O point number or connect with some special function expansion modules.

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Figure 1

  1. Mounting hole(⌀:4.5)
  2. Power supply and input signal terminal
  3. 24v output power supply and output terminal
  4. Input indicator
  5. Output indicator
  6. PLC state indicator:
    • PWR: power light
    • RUN: running light
    • BAT: low power light
    • ERR: blinks when the program is wrong;
    • ERR: always on when a CPU error occurs
  7. DIN rail mounting clip
  8. Cover plate
  9. Com1 port
  10. RUN/STOP switch
  11. COM1/COM2 port and rs485 port
  12. Expansion module interface
  13. Micro-USB port
  14. BD board slot

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Figure 2

RS422 communication cable drawing

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Figure 3

Expansion module

WECON PLC has many kinds of expansion modules, including I/O module, analog input and output module, high speed output module and Ethernet communication protocol.

  1. Expansion cable
  2. Com light: always on when digital transmission is normal
  3. 24V: always on when connect with external 24V power supply
  4. Module power status light: Always on when normal
  5. The name of the expansion module
  6. Analog signal output terminal
  7. Expansion interface
  8. DIN rail mounting clip
  9. DIN rail hooks
  10. Mounting hole(⌀:4.5)

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Figure 4

The PLC CPU and the expansion module are the same size in height and depth, but different width. So they could connect with each other in a neat form, also the configuration is flexible.

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Figure 5

BD module

Compared with expansion module, BD module is smaller, more flexible (up to 2 BD modules in one PLC) and cheaper, but also with multi-function. Because the BD module is installed in the host unit, so it will not occupy extra space.

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Figure 6

Dimension

PLC CPU

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Figure 7

Mount the plc in the DIN (35mm) rail directly. Gently pull out the DIN rail mounting clip from below, then we could remove the main unit from DIN rail. The mounting holes could be used to directly mount the programmable controller with M4 screws. Please refer to the following table for the pitch and location of mounting holes.

Table 1

MODELW(mm)W1(mm)MODELW(mm)W1(mm)
LX3V-0806MX7561LX3V-1208MX7561
LX3V-1212MX136123LX3V-1412MX136123
LX3V-1616MX175161LX3V-2416MX175161
LX3V-2424MX221207LX3V-3624MX221207

Expansion module

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Figure 8

BD module

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Figure 9

PLC series function appendix

The naming rules of Wecon PLC:

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①～⑥ in the model name composition indicate the following specifications:

① Number of input

② Number of output

③ Output mode: R= Relay output (with contact, AC and DC load dual purpose)

                             T=transistor output (for non-contact, DC load)

④ Expansion port: 4H = high-speed pulse output with 4 axes

                                 2H = High-speed pulse output with 2 axes

⑤ Power supply type: A: AC220V input, omitted as the default AC220V; D: DC24V input.

⑥ Instruction set: 1=1S instruction set; 2=2N instruction set, none = default 2N instruction set.

✎Note:

  1. The 1S instruction set does not support floating-point operations.
  2. The LX3V series of Wecon PLC is the basic model.
  3. The LX3VP series is an upgraded version of the LX3V series, which adds N:N network communication function, RSLIST tabularization, DVIT interrupt positioning instruction, PLSR2 multi-speed high-speed instruction, and supports ETH-BD (Ethernet module) and CAN module.
  4. The LX3VE series is an upgraded version of the LX3V series, which adds electronic cam, S-cam function, N:N network communication function, linear interpolation function, RSLIST table command, DVIT interrupt positioning command function, and supports ETH-BD (Ethernet module) .
  5. The LX3VM series is an upgraded version of the LX3VE series, which adds the arc interpolation function, but does not support ETH-BD (Ethernet module).

The specific function parameters are shown in the figure below:

Function descriptionLX3V seriesLX3VP seriesLX3VE seriesLX3VM series
Version number distinction250XX251XX252XX253XX
160XX160XX160XX160XX
Power input modeA: AC220V; D: DC24V
Output modeMT: transistor type; MR: relay type
Input and output points0806; 1208;1208;  
1212; 1412;1212; 1412;1412;1412;
1616; 2416;1616; 2416;1616; 2416;1616; 2416;
2424; 3624;2424; 3624;2424; 3624;2424; 3624;
Execution wayCycle scan/interrupt mode
Programming modeLadder diagram, instruction list
Program capacity16k64K32K
Execution timeBasic instruction: 0.06 microseconds / application instruction: 1-10 microseconds
High-speed pulse input

Single phase input: 200K

AB phase input: 100K

High-speed pulse output

LX3V-XX-4H ( Y0 to Y3  can up to 100Khz  per channel, but at a time,Y0+Y1+Y2+Y3 pulses can not more than 200 Khz )
LX3VP/LX3VE/LX3VM-XX-4H ( Y0 to Y3 can up to 200Khz per channel)

 

√√√√
Transistor type: 2 channels (extended 4 channels)
Relay type: none (extended 2 channels)
High-speed counter interrupt6 channel
Timer interrupt3 channel
Storage mediumFlash
 COM1: RS422 or RS485 (cannot be used at the same time);
Serial communicationCOM1: RS422 or RS485 (cannot be used at the same time);
Small BD module support√√√√
ETH-BD (Ethernet) Module×√√×
CAN module×√ *××
Expansion module support√√√√
Electronic cam××√√
S-cam××√√
N:N network×√√√
Linear interpolation××√ *√
Circular interpolation×××√
M8141 control power down latch√√√√
Function descriptionLX3V seriesLX3VP seriesLX3VE seriesLX3VM series
Serial communication form (RSLIST)×√√√
RTC clock support√√√√
PLCID (identification code)√√√√
Subroutine encryption√√√√
Upload prohibited√√√√
DRVI positioning instruction√√√√
DRVA positioning instruction√√√√
PID instruction√√√√
PTO instruction√√√√
DVIT interrupt positioning×√√√
PLSR2 instruction (multi-speed pulse output)×√ *××
CCPID instruction××××
SCL××××

✎Note: Only supported by special versions, please consult relevant personnel for details.