Advantech Carbon Monoxide Alarm PCI-1718 Series Manuel D’Utilisation

1.

Set the input range for each A/D channel

2.

Set the input channel by specifying the MUX scan range

3.

Trigger the A/D conversion by writing to the A/D low byte register 
(BASE+0) with any value.

4.

Check for the end of the conversion by reading the A/D status reg-
ister (BASE+8) EOC bit.

5.

Read data from the A/D converter by reading the A/D data register 
(BASE+0 and BASE+1)

6.

Convert the binary A/D data to an integer.

MUX Scan

Channel Control &

A/D Range

Control

Set Software

Trigger and

Disable Generated

Interrupt

Software A/D

Trigger

Check EOC

Get Data

EOC=0

w Base+0 1H

w Base+0 2H

w Base+ 09H

w Base+ 00H

r Base+ 08H

r Base+ 00H
r Base+01H

More Data?

Yes

No

EOC!=0

Set Scan Channel