The GT small PLC by Lingkong features a user-friendly programming and debugging environment, supports multiple programming languages, and offers rich and powerful communication and control functions.
Features:
- Programming Methods:
- Ladder Diagram (LD)
- Instruction List (IL)
- Sequential Function Chart (SFC)
- Structured Text (ST)
- Function Block (FB) Structured Programming
- Download Methods:
- RS232
- RS485
- Ethernet
- Serial Communication Interfaces:
- RS2321, RS4852
- Free communication via RS, MODBUS RTU/ASCII, Programming Port Protocol/Program Download Monitoring (3 fully independent serial ports)
- CAN Communication:
- Supports CAN OPEN, Expansion, NSharing, CAN RS Free Communication
- Ethernet Communication:
- TCP/IP Free Protocol, MC, MODBUS TCP, Programming Port Protocol/Program Download Monitoring (8 channel ports)
- High-Speed Pulse Input:
- Supports up to 2 channels of ABZ phase at 100kHz
- High-Speed Pulse Output:
- Supports up to 8 channels of pulse output, with 6 channels at 200kHz and 2 channels at 100kHz
- Supports positioning and PWM commands
- ADC Analog Input:
- 0-10V / 4~20mA / 0-20mA
- Temperature Acquisition:
- NTC10K / NTC50K / PT100 / K-type Thermocouple
- Weight Acquisition:
- 24-bit weight acquisition
- Expansion Modules:
- IO Expansion, PT100 Expansion, ADC Analog Input Expansion, DAC Analog Output Expansion, Weight Expansion
- Online Write:
- Supports online write-in functionality
- Super Encryption Support:
- Protects your intellectual property
Communication Port Conversion Function
Lingkong GT3U PLC Selection Table
Compatible with FX3U programming, 2 channels 485, 8-axis pulse, 2 channels weighing, Ethernet port, DIN35 rail mounting
GT3U-14/20/24 Series
| Model | Dimensions (mm) | Mounting Hole Distance (mm) | Input | Relay Output | Transistor Output | AD | DA | High-Speed Input | High-Speed Output |
|---|---|---|---|---|---|---|---|---|---|
| GT3U-14MR | 117*125*56 | 107.5*116.4 | 8 | 6 | – | 4 | 2 | 2 | – |
| GT3U-14MT | 117*125*56 | 107.5*116.4 | 8 | – | 6 | 4 | 2 | 2 | 4 |
| GT3U-14MRT | 117*125*56 | 107.5*116.4 | 8 | 2 | 4 | 4 | 2 | 2 | 4 |
| GT3U-20MR | 117*125*56 | 107.5*116.4 | 12 | 8 | – | 4 | 2 | 2 | – |
| GT3U-20MT | 117*125*56 | 107.5*116.4 | 12 | – | 8 | 4 | 2 | 2 | 4 |
| GT3U-20MRT | 117*125*56 | 107.5*116.4 | 12 | 4 | 4 | 4 | 2 | 2 | 4 |
| GT3U-24MR | 117*125*56 | 107.5*116.4 | 12 | 12 | – | 6 | 2 | 2 | – |
| GT3U-24MT | 117*125*56 | 107.5*116.4 | 12 | – | 12 | 6 | 2 | 2 | 4 |
| GT3U-24MRT | 117*125*56 | 107.5*116.4 | 12 | 8 | 4 | 6 | 2 | 2 | 4 |
GT3U-32/48/64/80 Series
| Model | Dimensions (mm) | Mounting Hole Distance (mm) | Input | Relay Output | Transistor Output | AD | DA | High-Speed Input | High-Speed Output |
|---|---|---|---|---|---|---|---|---|---|
| GT3U-32MR | 162*125*56 | 155*116.4 | 16 | 16 | – | 10 | 2 | 2 | – |
| GT3U-32MT | 162*125*56 | 155*116.4 | 16 | – | 16 | 10 | 2 | 2 | 8 |
| GT3U-32MRT | 162*125*56 | 155*116.4 | 16 | 8 | 8 | 10 | 2 | 2 | 8 |
| GT3U-48MR | 199*125*56 | 190.4*116.4 | 24 | 24 | – | 10 | 2 | 2 | – |
| GT3U-48MT | 199*125*56 | 190.4*116.4 | 24 | – | 24 | 10 | 2 | 2 | 8 |
| GT3U-48MRT | 199*125*56 | 190.4*116.4 | 24 | 16 | 8 | 10 | 2 | 2 | 8 |
| GT3U-64MR | 250*125*56 | 240.5*116.4 | 32 | 32 | – | 10 | 2 | 2 | – |
| GT3U-64MT | 250*125*56 | 240.5*116.4 | 32 | – | 32 | 10 | 2 | 2 | 8 |
| GT3U-64MRT | 250*125*56 | 240.5*116.4 | 32 | 24 | 8 | 10 | 2 | 2 | 8 |
| GT3U-80MR | 307*125*56 | 298*116.4 | 40 | 40 | – | 10 | 2 | 2 | – |
| GT3U-80MT | 307*125*56 | 298*116.4 | 40 | – | 40 | 10 | 2 | 2 | 8 |
| GT3U-80MRT | 307*125*56 | 298*116.4 | 40 | 32 | 8 | 10 | 2 | 2 | 8 |
Notes
- Relay Output: Indicates the number of relay output points.
- Transistor Output: Indicates the number of transistor output points.
- AD: Analog Input
- DA: Analog Output
- High-Speed Input: Indicates the number of high-speed input points.
- High-Speed Output: Indicates the number of high-speed output points.
This table provides detailed specifications for each model within the GT3U series, including their dimensions, mounting hole distances, and various input/output capabilities.
GT3U Standard Edition Functions
| Feature | Description |
|---|---|
| Communication | |
| – 1x RS232 | Pinout: 2 (TXD), 3 (RXD), 5 (GND) Protocols: Mitsubishi, MODBUS RTU/ASCII/RS232 Uses: Connects to touch screens, etc. |
| – 2x RS485 | Pinout: A, B, GND <br> Protocols: Mitsubishi, MODBUS RTU/RS Uses: Connects to touch screens, frequency converters, etc. Distance: Up to 1000 meters |
| Analog Inputs | Default: 0-10V (changeable to 0-20mA) Contact customer service for modifications |
| Analog Outputs | Voltage Output: 0-10V (C- and V+) Current Output: 0-20mA (G- and I+) |
| High-Speed Pulse | |
| – Inputs | Default 2 channels (X0 60kHz, X1 10kHz) |
| – Outputs | LK3U-14/20/24: 4 channels (Y0-Y3 200kHz) LK3U-32/48/64/80: 6 channels (Y0-Y5 200kHz, Y6-Y7 100kHz) Note: Relay models do not have pulse outputs |
GT3U Optional Functions
| Feature | Description |
|---|---|
| High-Speed Input Expansion | Up to 4 extra channels (X2 10kHz, X3 60kHz, X4-X5 10kHz) |
| Temperature Measurement | |
| – NTC Sensors | Types: NTC 10K (-40°C to 150°C), NTC 50K (-40°C to 209°C) Contact customer service to switch from NTC 10K to NTC 50K (use M8000-MOV K4095 D8009) |
| – PT100 Sensors | Type: PT100 (-40°C to 450°C) Number of AD channels corresponds to the number of sensors |
| Weighing Function | Up to 2 channels Connections: E+ E- S+ S- (4-wire) Excitation Voltage: 5V Signal Voltage Range: -20mV to +20mV Data Collection Frequency: 10Hz |
| CAN Communication | Optional: 1 channel Protocols: CANopen, CAN RS free protocol Connection: N sharing, links to Lingkong’s dedicated expansion modules |
| Ethernet Communication | GT3U-24: Not supported Other Models: Can add 1 Ethernet port Protocols: Mitsubishi, MODBUS TCP/UDP, MC protocol |
Input and Output Types
| Type | Description |
|---|---|
| Inputs | DC24V NPN, Active Low |
| Outputs | |
| – MR Relay | Maximum Load Current: 3A Voltage Range: DC 0V–30V and AC 110V–220V Relay Life: 200,000 cycles |
| – MT Transistor | Maximum Load Current: 0.5A Output: DC 24V NPN, Active Low For Inductive Loads: Use a relay or flyback diode to protect the transistor |
| – MRT Mixed Output | The first 2/4/8 channels are transistors, the remaining channels are relays. Refer to the selection table for specific details |
| Series | LK3U/ZK3U | GT3U/GX3U |
|---|---|---|
| 232 | Programming port protocol | Programming port protocol/MODBUS RTU/ASCII/RS2 |
| 485-1 | Programming port protocol/MODBUS RTU/RS | Programming port protocol/MODBUS RTU/ASCII/RS/RS2 |
| 485-2 | Programming port protocol/MODBUS RTU/RS | Programming port protocol/MODBUS RTU/ASCII/RS/RS2 |
| Ethernet | Programming port protocol/MODBUS TCP/UDP | Programming port protocol/MODBUS TCP/UDP/MC protocol |
| CAN | N: N sharing/connecting to Lingkong’s dedicated expansion modules | CAN OPEN/CAN RS/N:N sharing/connecting to expansion modules |
| Other | \ | 1. More comprehensive instruction set, supporting 2000 R registers<br>2. Supports online writing, ladder diagram, SFC, FB, and ST structured programming<br>3. Various advanced encryption methods |