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Laser Marking Machine with I/O for PLC
  • Name:
  • Laser Marking Machine with I/O for PLC
  • Comments:
  • Special laser marking machine with I/O for PLC control.
    The extended I/O support signals like "start marking", "stop marking", "busy", "finished marking", "file select".
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  • 4958
Detailed Info
  1. Summary

For automatic laser marking, NCSK designed customized laser marking machine which can connect with PLCCustom function including

1)Extended I/O for PLC communication

2)Communication protocol 

3)Software Development Kit(SDK


Figure 1-1 Automatic laser marking solution

2. Extend I/O for PLC communication

PLC need control signal and state signal to control the laser marking machine. So we add these signals in an extended I/O. The extended I/O can be DB15 or DB25, depending on how many signals need to be used.


Figure 2-1 Laser Marking Machine Extended I/O for PLC control

2.1 General Input Signal

General Input Signals are use for controlling the working state of laser machineIncluding

1)Start Marking SignalMachine start making when it’s active.

2)Stop Marking SignalMachine stop marking when its active, and show warning information.

3)Safety Door SignalMachine stop marking when its active.

4)File Select SignalUse input signal to select the right file to markingFor exampleINPUT[6:4] ”001” select file A to markingINPUT[6:4] “010” select file B to marking

Extended I/O support 8 general input signals,figure 2-2 shows the pin diagram:


Figure 2-2 Pin diagram of input signal

2.2 General Output Signal

General output signals show the working state of laser marking machine

1)Busy MarkingActive when machine is marking

2)Finished MarkingOutput an pulse signal when finished marking.

3)Red light indication signalActive when Red light is indicating 

The output signal is TTL output by default. Short circuit or grounding should be avoided.

3. Communication protocol 
In normal laser marking system, you can modify the content of mark by serial port or ethernet port. But you can only modify one content before marking.
So we design a communication protocol.
With this protocol, you can modify any mark any content before laser marking.

Instruction codeMark addressDataCRC code

Intruction code: Code of instruction
Mark address: Define which mark you need to modify
Data: The new content of the mark
CRC code: CRC check code 

The procotol also define the feedback massage formate, and other instruction, for detail document, please contact us.

4. Software Development Kit (SDK)

NCSK also supply SDK for secondary development of software. With this SDK, you can integrate the core functions of laser marking software into your own program.

The SDK is suitable for Windows system environment and the development language is C++. Figure 4-1shows a demo program developed by this SDK.


Figure 4-1 demo program developed by SDK

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