Siemens Simatic 620 User Manual
Page 144
Hardware Information
7-12
SIMATIC Box PC 620 Manual
A5E00131465-01
Parallel Port LPT1
The parallel port (LPT 1) on the Box PC has the following pinout:
1
13
14
25
Figure 7-3 Parallel Port LPT 1 (Socket)
Pin No.
Designation
Description
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
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
Ground
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