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Computer Interface
Pin | In or | Signal | Description | |
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10 | Out | Acknowledge* [nAck] | This | |
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| character received. | |
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11 | Out | Busy [Busy] | When this signal is high, the printer is busy. When it is low, | |
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| the printer is able to receive more data. | |
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12 | Out | Paper Empty | This signal goes high when the printer runs out of paper.** | |
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13 | Out | Online (Select) [Select] | This signal goes high when the printer is online and low | |
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| when the printer is offline. The signal goes low when you | |
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| press [GO] to make the printer go off line.** | |
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14 | In | — [nAutoFd] | Ignored | |
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15 | — | — | Not used | |
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16 | — | 0 V DC |
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17 | — | Chassis Ground |
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18 | — | +5 V DC | This pin is used for the printer’s +5 V DC power supply | |
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| (+5±0.5 V, 400 mA maximum, with fuse) | |
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19 | — | Ground return |
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20 | — | Ground return |
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21 | — | Ground return |
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22 | — | Ground return |
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23 | — | Ground return |
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24 | — | Ground return |
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25 | — | Ground return |
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26 | — | Ground return |
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27 | — | Ground return |
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28 | — | Ground return |
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29 | — | Ground return |
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30 | — | Ground return |
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31 | In | — [nInit] | Ignored | |
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32 | Out | Error* [nFault] | When the | |
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| returns an error status.** | |
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33 | — | — | Not used | |
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34 | — | — | Not used | |
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35 | Out | Power Ready | This signal goes high when the printer is powered on. | |
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36 | In | Select In [nSelect In] | When this line is high, IEEE1284 mode is enabled. | |
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*Indicates signals that are low active.
**The Paper Empty, Online, and Error signals work only after you have enabled them using the O2 parameter of the FRPO command.
ADVANCED OPERATION GUIDE |