Advantech RS-100-RT Bedienungsanleitung PDF herunterladen (Seite 312)

100

101

Calibration

5-10 ADAM 4000 Series User's Manual

4. Issue the Analog Data Out command to the module with an output

value of 4 mA.

5. Check the actual output value at the modules terminals . If this does not

equals 4 mA, use the “Trim” option in the “CaLibrate” sub menu to

change the actual output. Trim the module until the milliammeter

indicates exactly 4 mA or in case of an voltage meter with shunt resistor,

the voltage meter indicates exactly 1 V. (When calibrating for 20 mA

using voltage meter and shunt resistor, the correct voltage would be 5

V.)

6. Issue the 4 mA Calibration command to indicate that the output is

calibrated and calibration parameters should be stored in the modules

EEPROM.

7. Execute an Analog Data Out command with an output value of 20 mA.

The module’s output will be approximately 20 mA.

8. Execute the Trim Calibration command as often as necessary until the

output current is equal to exactly 20 mA.

9. Execute the 20 mA Calibration command to indicate that the present

output is exactly 20 mA. The analog output module will store its

calibration parameters in EEPROM.

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