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Connections
All connections are shown with DMX C4 viewed from the side of the screw terminals and D-type
connector.
CON1 (Dot Matrix Display)
1. 0V
Ground power supply to Display (also brought out on CON5)
2. V+
Positive power supply to Display (also brought out on CON5)
3. Vee
LCD Contrast supply to Display (internally connected to contrast control
potentiometer and link Lk1)
4. A0
Register Select input for Display
5. R/W
Read/Write signal for Display
6. E
Display Enable signal
7. D0
8. D1
9. D2
10. D3
Data Bus
11. D4
12. D5
13. D6
14. D7
15. LED-
LED Backlighting connection (internally connected to links Lk2, Lk3 and Lk4)
16. LED+ LED Backlighting connrction (internally connected to links Lk2, Lk3 and Lk4)
CON2 (Dot Matrix Display)
2
V+
4
A0
6
E
8
D1
10 D3
12 D5
11 D4
14 D7
13 D6
16 LED+
15 LED-
Links
Lk1 Break link to disable display contrast control.
Lk2 Break right hand link and make left hand link to invert backlighting polarity. Use with Lk3.
Lk3 Break right hand link and make left hand link to invert backlighting polarity. Use with Lk2.
Lk4 Remove plug to add external backlighting switch.
CON3 (Parallel Port)
1
0V
10 D0
3
Vee
8
5
R/W
6
7
D0
4
9
D2
2
* DATA ENABLE
(data D0 to D7 have effect)
9
D1
D2
7
D3
D4
5
D5
D6
3
D7
RESET
1
DE*
5
CON4 (Serial Port)
1
2
3
4
6
7
8
9
2 RxD
5
Ground
3 TxD
7
RTS
4 DTR
8
CTS
5
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