Parallel Interface
Handshake: DSTB to printer and BUSY to host.
Printer connector: 36-pin female Centronics connector.
Pin Signal Name Transmitter
1 -Strobe Host
2–9 Data 0–7 Host
10–11 Busy Printer
12 Paper empty Printer
13 Select Printer
14–15 Not connected
16 Signal ground
17 Chassis ground
18 + 5V DC Max. 500 mA
1
19–30 Signal ground
31 -Init
32 -Fault Printer
33 Signal ground
34–36 Selectin
1
/.e combined load on the external +5V on both the parallel and the
serial port must not exceed a total of 500 mA.
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