19.0 Panel Mount PC
486-0010-01-02
41
A p p e n d i x B
Digital I/O
Using the Digital Input Function
Start
Un-Lock SuperI /O:
O 2E 87 ; Un-lock super I/O
O 2E 87 ; Un-lock super I/O
SelectMultiplexed pin to GPIO Function:
O 2E 2A
O 2F FF
Select Logic device:
O 2E 07
O 2F 07
Activate Logic Device:
O 2E 30
O 2F 01
Select GPI Function:
O 2E F0
O 2F E0 (for 3 IN/5 OUT)
( When set to a '1', respective GPIO port is programmed as an input port.
When set to a '0', respective GPIO port is programmed as an output port.)
Read Data:
O 2E F1
I 2F XX ( XX is input Data;if no input source,the
value is FF)
