Siemens PC 670 manual Parallel interface LPT1

Release 04/02 Hardware Information

Parallel interface LPT1

The parallel interface (LPT1) of the computing unit is assigned as follows:

1

14

1325

Figure 7-3 Parallel interface LPT1 (female)

Pin No.	Short Name	Meaning	Input/Output
1	/ Strobe (CLK)	Data message	Output (open collector)
2	Data bit 0	Data line 0	Output (TTL level)
3	Data bit 1	Data line 1	Output (TTL level)
4	Data bit 2	Data line 2	Output (TTL level)
5	Data bit 3	Data line 3	Output (TTL level)
6	Data bit 4	Data line 4	Output (TTL level)
7	Data bit 5	Data line 5	Output (TTL level)
8	Data bit 6	Data line 6	Output (TTL level)
9	Data bit 7	Data line 7	Output (TTL level)
10	/ACK	Acknowledge	Input (4.7 kW pull up)
11	BUSY	Not ready	Input (4.7 kW pull up)
12	PE (PAPER END)	No paper	Input (4.7 kW pull up)
13	SELECT	Device selection	Input (4.7 kW pull up)
14	/ AUTO FEED	Automatic new line	Output (open collector)
15	/ ERROR	Device error	Input (4.7 kW pull up)
16	/ INIT	Reset / Initialization	Output (open collector)
17	/ SELECT IN	Printer selection	Output (open collector)
18 - 25	GND	Chassis ground	-

Panel PC 670 Computing Unit, Equipment Manual 7-13