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Epic 630™ Thermal Kiosk Printer
RS-232 Serial Interface
Serial Port Features
The serial port features are as follows:
Baud Rates 300, 600, 1200, 2400, 4800, 9600, 19.2K, 38.4K, and 57.6K
Bit Patterns 8-bit no parity; 8-bit odd; 8-bit even; 7-bit no parity; 7-bit odd; 7-bit even
Flow Control DTR and XON/XOFF
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9-pin
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25-pin
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Signal
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Description
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Pin 1
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Pin 8
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Not Connected
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Pin 2
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Pin 3
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RX
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Receive Data
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Pin 3
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Pin 2
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TX
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Transmit Data
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Pin 4
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Pin 20
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DTR
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Data Terminal Ready
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Pin 5
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Pin 7
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GND
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Signal Ground
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Pin 6
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Pin 6
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DSR
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Data Set Ready
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Pin 7
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Pin 4
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RTS
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Request to Send
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Pin 8
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Pin 5
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CTS
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Clear to Send
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Pin 9
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Pin 11
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Not Connected
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Table 5 Serial Interface Pin-outs
Signal Voltage and Current levels
The serial interface meets EIA RS232 interface specifications:
Voltage Levels Max +-15 Volts
Min +- 3 Volts
Mark = Off = -3 to –15 Volts
Space = On = +3 to +15 Volts
Because both the host and printer are DTE's (Data Terminal Equipment), they use the same serial port pin-outs. If the cable that is used to connect the host to the printer is a pin-to-pin inter-connect, it will not work. Therefore, a null modem or turn-around cable must be used to interconnect the host and the printer.
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