Siemens SIMATIC PC 670 Equipment Manual page 145

Release 04/02
Parallel interface LPT1
The parallel interface (LPT1) of the computing unit is assigned as follows:
Figure 7-3
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
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Panel PC 670 Computing Unit, Equipment Manual
1
13
Parallel interface LPT1 (female)
Short Name Meaning
/ Strobe (CLK) Data message
Data bit 0 Data line 0
Data bit 1 Data line 1
Data bit 2 Data line 2
Data bit 3 Data line 3
Data bit 4 Data line 4
Data bit 5 Data line 5
Data bit 6 Data line 6
Data bit 7 Data line 7
/ACK Acknowledge
BUSY Not ready
PE (PAPER END) No paper
SELECT Device selection
/ AUTO FEED Automatic new line
/ ERROR Device error
/ INIT Reset / Initialization
/ SELECT IN Printer selection
GND Chassis ground
14
25
Hardware Information
Input/Output
Output (open collector)
Output (TTL level)
Output (TTL level)
Output (TTL level)
Output (TTL level)
Output (TTL level)
Output (TTL level)
Output (TTL level)
Output (TTL level)
Input (4.7 kW pull up)
Input (4.7 kW pull up)
Input (4.7 kW pull up)
Input (4.7 kW pull up)
Output (open collector)
Input (4.7 kW pull up)
Output (open collector)
Output (open collector)
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