? AIN_RDMA_CH.C —Demonstrates reading a 4–20 mA A/D converter channel. The current
being monitored will be displayed continuously in the STDIO window.
Before you run this sample program, place jumpers across pins 1–2, 3–4, 5–6, and 7–8 of
header JP1 on the A/D Converter Card. Connect an external power supply (make sure the
power supply is set at 0 V and is turned off) between one of the analog input channels and
GND with a 500 ? resistor and an ammeter connected as shown for the AIN_CALMA_
CH.C sample program. If you do not use the 500 ? resistor to simulate a 4–20 mA current
source from a voltage swing of 0–10 V, your power supply voltage output cannot exceed
2.0 V.
Now power up the master and the A/D Converter Card, and compile and run the sample
program. Turn the external power supply on and follow the prompts in the Dynamic C
STDIO window.
? AIN_RDSE_ALL.C —Reads and displays the voltage and equivalent values of all single-
ended analog input channels. Coefficients are read from the A/D Converter Card. The
computed raw data and equivalent voltages will be displayed.
Before you run this sample program, make sure your 0–10 V external power supply is off
and is set to 0 V. Connect the power supply between one of the AIN00–AIN07 analog
channels and GND. Connect a voltmeter across the power supply connections.
Now power up the master and the A/D Converter Card, and compile and run the sample
program. Turn the external power supply on and follow the prompts in the Dynamic C
STDIO window.
? AIN_RDSE_CH.C —Reads and displays the voltage and equivalent values of one single-
ended analog input channel. Coefficients are read from the A/D Converter Card. The com-
puted raw data and equivalent voltages will be displayed.
Before you run this sample program, make sure your 0–10 V external power supply is off
and is set to 0 V. Connect the power supply between one of the AIN00–AIN07 analog
channels and GND. Connect a voltmeter across the power supply connections.
Now power up the master and the A/D Converter Card, and compile and run the sample
program. Turn the external power supply on and follow the prompts in the Dynamic C
STDIO window.
? AIN_READ_CALDATA.C —Dumps the calibration data for all the A/D converter channels
and the modes of operation. The calibration gain factor, offset values, and mode of opera-
tion will be displayed for each channel via the Dynamic C STDIO window.
64
RabbitNet Peripheral Cards
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相关代理商/技术参数
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