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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.†† | |
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.†† | |
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 |