Power And Communication Interface - J.P. SELECTA ST DRY PV 12 Manual De Instrucciones

Power and communication interface
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2.1 The power supply
The power supply is DC 5.0~8.4V, 3A / DC 9~24V, 30W. (Refer to the printer model).
It is shown as follows:
Platform style: the column end is positive pole (+), the board end is negative pole (‐).
2.2 The serial interface
The serial interface of the printer has three kinds of logic signal level: TTL, 232, and 485
(refer to the printer model). By default, the baud rate is 9600bps. Asynchronous frame
format is one start bit, 8 data bits, and one stop bit.
The serial interface is as follows:
The pin definition of 232/TTL:
Pin Signal
2 TXD
3 RXD
5 GND
6 BUSY
8 DSR
Printer transmits data to PC
Receiving data from PC
Grounding signal
High level indicates the printer is busy and can't receive data. Low
level is the opposite.
High level indicates the printer is busy and can't receive data. Low
level is the opposite.
Explanation
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