Each printer has a corresponding control protocol.
Troubleshoot printer control issues.
* Parallel port and serial port, generally write data directly to the port
* Network printers generally write data to port 9100
+ Barcode printers have their own control protocols, please refer to the corresponding protocols
+ Line printer, just control line wrapping.
Different orders are written at different coordinate positions; just make a few more templates
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Each printer has a corresponding control protocol.
Troubleshoot printer control issues.
* Parallel port and serial port, generally write data directly to the port
* Network printers generally write data to port 9100
+ Barcode printers have their own control protocols, please refer to the corresponding protocols
+ Line printer, just control line wrapping.
Different orders are written at different coordinate positions; just make a few more templates