IBM 4247 Model 003, Руководство пользователя

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Pin Number Signal Name Description
16 LOGIC GND Logic Ground
17 CHASSIS GROUND Chassis Ground
18 Unused
19 - 30 GROUND Ground
31 -INIT Initialize Printer
32 -ERROR Printer Error
33 GROUND Ground
34, 35 Unused
36 -SLCT IN Make printer selected
Serial Cables
The 4247 Printer attaches to a host or controller by one of two serial interfaces,
RS-232C or RS-422A. A single, 25-pin D-connector mounted directly on the adapter
card allows attachment to either interface.
The RS-232C interface uses a standard serial cable up to 15.2 m (50 ft) in length,
with transmission rates up to 19.2 Kbps.
The RS-422A interface uses a serial cable up to 1219 m (4,000 ft) in length, with
transmission rates up to 38.4 Kbps.
RS-232C Connector Pin Assignments
Pin Number Signal Name Description
2 TXD Transmit Data
3 RXD Receive Data
4 RTS Request to Send
5 CTS Clear to Send
6 DSR Data Set Ready
7 SG Signal Ground
20 DTR Data Terminal Ready
RS-422A Connector Pin Assignments
Pin Number Signal Name Description
15 - RXD Receive Data
17 + RXD Receive Data
19 - TXD Transmit Data
25 + TXD Transmit Data
Attachment Cables for PCs and Compatible Serial Ports
The table below lists part numbers to use when ordering a cable.
Appendix A. Printer Specifications
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