Technical data

Hardware Information
6-17
SIMATIC Panel PC 670 Computing Unit Equipment Manual
Edition 12/01
Parallel port LPT1
The parallel port on the computing unit is assigned as follows:
Connector Pin
No.
Signal Description Input/Output
1 Strobe (CLK) Output (open collector)
2 Data bit 0 Output (TTL level)
3 Data bit 1 Output (TTL level)
4 Data bit 2 Output (TTL level)
1
5 Data bit 3 Output (TTL level)
1
14
6 Data bit 4 Output (TTL level)
7 Data bit 5 Output (TTL level)
8 Data bit 6 Output (TTL level)
9 Data bit 7 Output (TTL level)
10 ACK (Acknowledge) Input (4.7 kW pull up)
11 BUSY Input (4.7 kW pull up)
12 PE (PAPER END) Input (4.7 kW pull up)
13 SELECT Input (4.7 kW pull up)
14 AUTO FEED Output (open collector)
13
25
15 ERROR Input (4.7 kW pull up)
16 INIT Output (open collector)
17 SELECT IN Output (open collector)
18 GND -
: : :
PS/2 mouse port
You can connect an external PS/2 mouse to your computing unit. The port is
assigned as follows:
Connector –
View of Socket
Pin
No.
Name Input
Output
1 Data Input/Output
2 Not assigned -
5
6
3 0 V -
3
4
4 Current limited 5 V power
supply
Output
12
5 Clock Input/Output
12
6 Not assigned -