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Hardware Information
LPT1 Parallel Port
The parallel port (LPT 1) on the SIMATIC Box PC 840 has the following pinout:
Figure 7-3 LPT 1 Parallel Port (Socket)
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18 - 25
7-12
1
13
Designation
Description
/ 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
No paper
SELECT
Device selection
/ AUTO FEED
Automatic new line
/ ERROR
Device error
/ INIT
Reset / Initialization
/ SELECT IN
Printer selection
GND
Ground
14
25
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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SIMATIC Box PC 840 Manual
A5E00085984-04

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