02 Introduction

= **2.1 PLC host composition** =

According to the different hardware structure, PLC could be divided into host 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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[[image:1617848880215-357.png||class="img-thumbnail" height="392" width="700"]]

Figure 1

1. Mounting hole(⌀:4.5)

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1. Power supply and input signal terminal

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1. 24v output power supply and output terminal

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1. Input indicator

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1. Output indicator

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1. PLC state indicator:

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1*. PWR: power light

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1*. RUN: running light

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1*. BAT: low power light

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1*. ERR: blinks when the program is wrong;

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1*. ERR: always on when a CPU error occurs

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1. DIN rail mounting clip

1. Cover plate

1. Com1 port

1. RUN/STOP switch

1. COM1/COM2 port and rs485 port

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1. Expansion module interface

1. Micro-USB port

1. BD board slot

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[[image:2.WECON PLC introduction_html_2ab1ae49c4b64094.jpg||class="img-thumbnail" height="254" width="700"]]

Figure 2

= **2.2 Expansion module** =

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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.

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1. Expansion cable

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1. Com light: always on when digital transmission is normal

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1. 24v: always on when connect with external 24v power supply

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1. Module power status light: Always on when normal

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1. The name of the expansion module

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1. Analog signal output terminal

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1. Expansion interface

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1. DIN rail mounting clip

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1. DIN rail hooks

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1. Mounting hole(⌀:4.5)

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[[image:1617848918114-171.png||class="img-thumbnail" height="406" width="500"]]

Figure 3

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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[[image:2.WECON PLC introduction_html_e5b6cb69a43842b4.jpg||class="img-thumbnail" height="293" width="800"]]

Figure 4

= **2.3 BD board** =

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

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[[image:1617848958334-935.png||class="img-thumbnail" height="231" width="700"]]

Figure 5

= **2.4 Dimension** =

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== **2.4.1 PLC CPU** ==

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[[image:1617848968476-703.png||height="294" width="700" class="img-thumbnail"]]

Figure 6

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**

|=MODEL|=W(mm)|=W1(mm)|=MODEL|=W(mm)|=W1(mm)

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|LX3V-0806MX|75|61|LX3V-1208MX|75|61

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|LX3V-1212MX|136|123|LX3V-1412MX|136|123

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|LX3V-1616MX|175|161|LX3V-2416MX|175|161

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|LX3V-2424MX|221|207|LX3V-3624MX|221|207

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== **2.4.2 Expansion module** ==

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[[image:1617848984586-696.png||class="img-thumbnail" height="292" width="650"]]

Figure 7

== **2.4.3 BD board** ==

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[[image:1617848979413-720.png||class="img-thumbnail" height="251" width="600"]]

Figure 8

= **2.5 PLC series function appendix** =

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The naming rules of Wecon PLC:

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[[image:http://docs.we-con.com.cn/wiki/plc/download/2-User%20manual/3.WECON%20PLC%20introduction/Wecon%20PLC%20series%20function%20appendix/WebHome/%E7%BB%B4%E6%8E%A7PLC%E7%B3%BB%E5%88%97%E5%8A%9F%E8%83%BD%E9%99%84%E5%BD%95_Eng_html_901d65f8023d85d4.png?width=494&height=111&rev=1.3||alt="维控PLC系列功能附录_Eng_html_901d65f8023d85d4.png" height="126" width="561"]]

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

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**① The number of input**

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**② Number of output**

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

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

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

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2H = High-speed pulse output with 2 axes

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

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**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.

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1. The LX3V series of Wecon PLC is the basic model.

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1. 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.

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1. 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) .

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1. 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).

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**The specific function parameters are shown in the figure below:**

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|(% rowspan="2" %)**Version number distinction**|250XX|251XX|252XX|253XX

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|160XX|160XX|160XX|160XX

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|**Power input mode**|(% colspan="4" %)A: AC220V; D: DC24V

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|**Output mode**|(% colspan="4" %)MT: transistor type; MR: relay type

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|(% rowspan="4" %)**Input and output points**|0806; 1208;|1208;| |

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|1212; 1412;|1212; 1412;|1412;|1412;

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|1616; 2416;|1616; 2416;|1616; 2416;|1616; 2416;

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|2424; 3624;|2424; 3624;|2424; 3624;|2424; 3624;

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|**Execution way**|(% colspan="4" %)Cycle scan/interrupt mode

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|**Programming mode**|(% colspan="4" %)Ladder diagram, instruction list

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|**Program capacity**|16k|64K|(% colspan="2" %)32K

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|**Execution time**|(% colspan="4" %)Basic instruction: 0.06 microseconds / application instruction: 1-10 microseconds

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|**High-speed pulse input**|(% colspan="4" %)(((

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Single phase input: 200K

AB phase input: 100K

)))

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|=(% rowspan="3" style="width: 572px;" %)(((

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**High-speed pulse output**

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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 )

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LX3VP/LX3VE/LX3VM-XX-4H ( Y0 to Y3 can up to 200Khz per channel)

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)))|=(% style="width: 128px;" %)√|=(% style="width: 135px;" %)√|=(% style="width: 127px;" %)√|=(% style="width: 114px;" %)√

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|(% colspan="4" style="width:504px" %)Transistor type: 2 channels (extended 4 channels)

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|(% colspan="4" style="width:504px" %)Relay type: none (extended 2 channels)

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|(% style="width:572px" %)**High-speed counter interrupt**|(% colspan="4" style="width:504px" %)6 channel

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|(% style="width:572px" %)**Timer interrupt**|(% colspan="4" style="width:504px" %)3 channel

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|(% style="width:572px" %)**Storage medium**|(% colspan="4" style="width:504px" %)Flash

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|(% style="width:572px" %) |(% colspan="4" style="width:504px" %)COM1: RS422 or RS485 (cannot be used at the same time);

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|(% style="width:572px" %)**Serial communication**|(% colspan="4" style="width:504px" %)COM1: RS422 or RS485 (cannot be used at the same time);

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|**Serial communication form (RSLIST)**|**×**|√|√|√

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|**RTC clock support**|√|√|√|√

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|**PLCID (identification code)**|√|√|√|√

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|**Subroutine encryption**|√|√|√|√

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|**Upload prohibited**|√|√|√|√

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|**DRVI positioning instruction**|√|√|√|√

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|**DRVA positioning instruction**|√|√|√|√

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|**PID instruction**|√|√|√|√

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|**PTO instruction**|√|√|√|√

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|**DVIT interrupt positioning**|**×**|√|√|√

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|**PLSR2 instruction (multi-speed pulse output)**|**×**|√ *|**×**|**×**

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|**CCPID instruction**|**×**|**×**|**×**|**×**

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|**SCL**|**×**|**×**|**×**|**×**

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

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