Unicomp Labs Echo-236F-G4, User Manual

Page: 110 / 127

103
Appendix A
A
A.1 IO Pin Definition
GPIO Pin Base Address Usage
70 ~ 77 0xA06 DO
80 ~ 87 0xA07 DI
APPENDIX A : Isolated DIO Guide
Pin
No.
Definition Description
Pin
No.
Definition Description
1 EXT_IN0 DI0 11 EXT_OUT0 DO0
2 EXT_IN1 DI1 12 EXT_OUT1 DO1
3 EXT_IN2 DI2 13 EXT_OUT2 DO2
4 EXT_IN3 DI3 14 EXT_OUT3 DO3
5 EXT_IN4 DI4 15 EXT_OUT4 DO4
6 EXT_IN5 DI5 16 EXT_OUT5 DO5
7 EXT_IN6 DI6 17 EXT_OUT6 DO6
8 EXT_IN7 DI7 18 EXT_OUT7 DO7
9 DI_COM DI COM 19 Reserved NC
10 EGND DIO GND 20 E24V External 24V DC
A.2 Function Description
The E
cho236
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: