HOW TO PERFORM CURRENT MEASUREMENT USING KEITHLEY 2700 IN LABVIEW

[cstorey]

Settings conflict errors usually mean your card doesn't support that type of measurement.  In the picture you have 2 DC voltage measurements but in the the code you have a DC Voltage and then a Resistance measurement.  

What card are you using?  

Craig

[NC200]

We are using the 7700 20 Channel Multiplec Card

[LTBALAZS]

Hello,

We have the same card 7700 20 Channel Multiplec Card.

I try to read the following channels:

113 - VDC

112 - Temperature

When I run vi named as 'k2700_read_DCV_then_temp.vi' i get the following error during second measurement:

-1074000000

<ERR> ke27xx Error Query;
instrument reports:
-221,"Settings conflict"
-221,"Settings conflict"

What works for me is 'Open communication -> Read Temperature -> close' then 'Open communication -> Read VDC-> close' ...

Questions:
1) Is this the only way i can read multiple channels?
2) Is it recomended so that channels be one after the other? ( E.g. channels 112,113,114,115...) Units: Voltage, Voltage, Temp, Temp..

[Albert.Geven]

Hi

You don't need to close the communication between commands but you probably have a conflict in the order you set the ranges. Some combinations of ranges are generating conflicts. 

Ihad problems with Amp ranging and Volt ranging until i found out that a high voltage range does not fit with a high current range. So the order in which you change the ranges is important.

The reason it probably works when closing the communication is the reset to a default state when opening the communication, but this is a very slow process.

good luck.