User's Manual

64 105SL User Guide 6/4/2004 11342L Rev. 8
Data Ports
Parallel Data Port
Parallel Data Port
A standard 36-pin parallel co nnector is availabl e at the rear of the printer for conn ection to the
data source. Under n ormal circumstances, data sent from the printer to the host computer in
response to a “Printer Status Request” command is sent throu gh the RS-232 serial port.
However, if the host computer has a properly configured IEEE-1284 parallel port that is
recognized by the printer, status information is returned through the parallel port. Port
selection for status information is determined each time the printer is tu rned on.
Ta b l e 9 shows the pi n con figuration and function of a standard computer-to-printer parallel
cable.
Table 9 • Parallel Port Pin Configuration
36-pin Connector Description
1 nStrobe/HostClk
2–9 Data Bits 1–8
10 nACK/PtrClk
11 Busy/PtrBusy
12 PError/ACKDataReq
13 Select/Xflag
14 nAutoFd/HostBusy
15 Not used
16 & 17 Ground
18 +5 V @ 750 mA
19–30 Ground
31 ninit
32 nFault/NDa taAvail
33 & 34 Not used
35 +5 V through a 1.8K Ω Resistor
36 NSelectin/1284 active