Reading From The Parallel Port - HP 8711C User Manual

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The parallel port has Eve TTL input signals, normally used for determining
the printer's status, which can be read. The signals and the corresponding
data bits and pins are shown in the following table:
Your custom interface circuit can drive these signals,
using any of these commands:
SCPI commands:
OUTPUT ORfna;"DIAG:PORT:READ? 15,lO"
ENTER QRfna;Parallel-in
Parallel-in = READIO(15,lO)
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Pin Bit Name
Acknowledge
10
11 01
Out of Paper
12
On tine
13
Printer Error
15 04
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Automating Measurements
Controlling Peripherals
and they can be read
7-59
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