Octagon 6000 Series, User Manual

Page: 98 / 233

8-3
6000 Series user’s manual Analog I/O
40 CONFIG AIN 3,3: ‘Config A/D channel 3 to -10 to 10V
input range
50 CONFIG AIN 4,0: ‘Config A/D channel 4 to 0 to 5V
input range
60 CONFIG AIN 5,0: ‘Config A/D channel 5 to 0 to 5V
input range
70 CONFIG AIN 6,0: ‘Config A/D channel 6 to 0 to 5V
input range
80 CONFIG AIN 7,0: ‘Config A/D channel 7 to 0 to 5V
input range
100 FOR X=0 TO 5
110 C(X) = AIN(0): ‘Assign analog input readings from
channel 0 to array C
120 NEXT X
Reading numbers less than zero
Do the following to read numbers less than zero:
1. Subtract 65535 (FFFF), then
2. Apply the multiplier.
Configuring analog output
Refer to Table 8-1 to configure for analog output on the 6040 PC
Microcontroller.
Table 8-1 6040 digital to analog output range select: W3
Output range Channel A Channel B
0V to 10V W3[6-8] W3[3-5]
0V to 5V W3[8-10] W3[1-3]
-5V to +5V W3[7-8]* W3[3-4]*
* = default, pins jumpered
Note The 12–bit digital–to–analog converters (DACs) can be jumpered for
different ranges. For example, for a 0 to 10V range, x = 0 implies 0.00V
output; x = 4095 implies 10V output. This means there are 10/4095 =
0.002442 volts per count.
Writing to analog output with CAMBASIC
An analog output program example using CAMBASIC’s AOT statement
is provided below.
10 ‘Assume that DAC jumper is configured to generate
0 to 10V