Interface Information
Pin | Direction | Signal | Description |
31 | To printer | Init L | Set to high for Reverse Channel operation |
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32 | From printer | DataAvail L | Reverse channel: Data 0 and 4 |
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33 |
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| Not used |
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34 |
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| Not used |
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35 |
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| Not used |
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36 | To printer | SelectIn L | Set to high for Reverse Channel |
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Serial Interface
Use the cable that comes with the printer or the Digital BC16E cable or equivalent. If you prepare a cable separately, the cable connector at the printer side should be a male Modified Modular Jack (MMJ) or the equivalent that conforms to EIA standards.
The following table shows the pin assignments. In the table:
•“Input” denotes a signal from the computer to the printer.
•“Output” denotes a signal from the printer to the computer.
•The signal level for mark state (logical 1) is
Pin | Signal | Direction | Description |
No. | Name |
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1 | Ready Out | Output | Data Terminal Ready |
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2 | Transmit Data + | Output | This pin carries information from the printer to |
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| the computer. |
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3 | Transmit Data - | Output | Common signal level. This pin carries |
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| information from the printer to the computer. |
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4 | Receive Data - | Input | Common signal level at the computer side. |
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| This pin carries information from the computer |
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| to the printer. |
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5 | Receive Data + | Input | This pin carries information from the computer |
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| to the printer. |
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6 | Ready In | Input | Optional (available as Data Set Ready) |
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