Z-World Fox LP3500, User Manual

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56 Fox (LP3500)
Reads the value of an analog input channel using the direct method of addressing the ADS7870 A/D
converter.
PARAMETERS
channel
is the analog input channel number (0 to 7) corresponding to AIN0–AIN7
opmode
is the mode of operation:
SINGLE —single-ended input line
DIFF
—differential input line
mAMP
—milliamp input line
gaincode
is the gain code of 0 to 7:
RETURN VALUE
A value corresponding to the voltage on the analog input channel, which will be:
0–2047 for 11-bit A/D conversions (signed 12th bit)
ADOVERFLOW (defined macro = -4096) if overflow or out of range
SEE ALSO
anaIn, anaInConfig, anaInDriver
int anaIn(unsigned int channel, int opmode,
int gaincode);
channel SINGLE DIFF mAMP
0 +AIN0 +AIN0 -AIN1 +AIN0
1 +AIN1 — +AIN1
2 +AIN2 +AIN2 -AIN3 +AIN2
3 +AIN3 — +AIN3
4 +AIN4 +AIN4 -AIN5 —
5 +AIN5 — —
6 +AIN6 +AIN6 -AIN7 —
7 +AIN7 — —
Gain Code
Voltage
Range
0 0–20 V
1 0–10 V
2 0–5 V
3 0–4 V
4 0–2.5 V
5 0–2 V
6 0–1.25 V
7 0–1 V