Serial cable can be either USB or DB9 connection type and be capable of voltage level shift to +3.3V, not +5V. There are three or four connections for serial to function properly: Vcc (+3.3V, but usually not connected), GND, Tx and Rx. Some boards are NOT marked with pin designation...
Type-B USB 2.0, Ethernet, RS232, Cash drawer Option Black mark sensor Page Mode Support Programming Language ESC/POS Memory RAM 2 MB Flash 4 MB Fonts Alphanumeric; Simplified Chinese, Traditional Chinese; 47 International Charactes Sets Barcode Linear Barcodes...
1. Historical Public Domain Document Jun 87 : Coin Controls Ltd abandons I2C development on future products in favour of the RS232 protocol. Apr 96 : 'cctalk' specification created after much consultation within the industry. Aug 98 : A meeting of coin mechanism manufacturers in Tamworth, ...
Serial cable can be either USB or DB9 connection type and be capable of voltage level shift to +3.3V, not +5V. There are three or four connections for serial to function properly: Vcc (+3.3V, but usually not connected), GND, Tx and Rx. Some boards are NOT marked with pin designation...