Appendix B: INTERFACE SPECIFICATIONS
Introduction
This appendix presents the interface specifications of I/O ports for the printer. These specifications include pin assignments, protocols and detailed information about how to properly interface your printer with your host or terminal.
Serial
The
Pin | Direction | Definition |
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1 | In | DSR |
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2 | In | RxData |
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3 | Out | TxData |
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5 | - | Ground |
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6 | Out | DTR |
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7 | Out | RTS |
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8 | In | CTS |
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9 | Out | +5V |
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Note: Pin 9 is reserved for KDU (keyboard device unit) only, therefore do not connect this pin if you are using a general host like a PC.
