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©Vecow IVH-9000 User Manual
Appendix A
DI in SINK mode (NPN)
Signal Circuit of Input NPN
A.3 DIO Signal Circuit
24V Application Diagram:
Pin
No.
Definition
Description
Pin
No.
Definition
Description
1
INPUT 0
DI0
11
OUTPUT 0
DO0
2
INPUT 1
DI1
12
OUTPUT 1
DO1
3
INPUT 2
DI2
13
OUTPUT 2
DO2
4
INPUT 3
DI3
14
OUTPUT 3
DO3
5
INPUT 4
DI4
15
OUTPUT 4
DO4
6
INPUT 5
DI5
16
OUTPUT 5
DO5
7
INPUT 6
DI6
17
OUTPUT 6
DO6
8
INPUT 7
DI7
18
OUTPUT 7
DO7
9
DI_COM
DI COM
19
N.C.
NC
10
GND
DIO GND
20
External DC External 6-36V DC
A.2 Function Description
The IVH-9000 offers a 16-bit DIO (8-DI/ 8-DO) 20-pin terminal block connector.
Each bit of DI and DO equipped with a photo-coupler for isolated protection.
All IO pins are fixed by Hardware design and cannot change in/out direction in
runtime process. The definition is listed as follows: