8-12
PG 720 P Programming Device
C79000-G7076-C721-02
The parallel port (LPT1) on the PG 720 has the following pinout:
1
13
14
25
Figure 8-6
LPT1 Parallel Port (Socket)
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)
5
Data - bit 3
Output (TTL level)
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 k
W
pull up)
11
BUSY
Input (4.7 k
W
pull up)
12
PE (PAPER END)
Input (4.7 k
W
pull up)
13
SELECT
Input (4.7 k
W
pull up)
14
/AUTO FEED
Output (open collector)
15
/ERROR
Input (4.7 k
W
pull up)
16
/INIT
Output (open collector)
17
/SELECT IN
Output (open collector)
18
GND
–
:
25
GND
–
Parallel Port
Hardware Information