Hex code 0BFFF0015 (Error -1073807346)

[Golareh]

Hi,

I am trying to communicate with my Eurotherm 3504 temperature controller in a way that: My temperature contoller is connected to a power supply contorller and then a power supply from one side and to labview from the other side and to a thermocouple form the third side.I am supposed to give a set point temperature in my code. The Eurotherm senses the temperature from the thermocouple. If thermocouple value is lower than the given set point in the code, Eurotherm would grab more power from the power supply to heat up my sample being sensed by thermocouple. This loop goes on until the temperature that the thermocouple is showing is equal to the given set point.

My issue right now is that, it seems Eurotherm is not reading what set point temperature I give in my code. I have attched the set point value subvi which is giving me similar errors for the 3 sub-components.

Worth noting, with NI-max, I can write with my instrument but for read it gives me the error Hex code 0BFFF0015. and in the main code, the current temperature of Eurotherm is read but the current set point no!

Do you know what could be the probelm?

Thanks.

[crossrulz]

The error you are showing in MAX is expected since the controller communicates using a Modbus standard, not SCPI like the command you sent it.

The error you are showing with the subVI is saying you have an invalid reference.  And looking at the front panel, that is obvious since you did not specify your port (VISA resource).

[Golareh]

Awesome, thank you for the help. Do you know how I can change it to use modbus commands instead of SCPI? Our code shows it is using modbus in the read from register, and it is showing the error shown in the screencap after addressing the VISA resource name.

[Golareh]

I am still struggling with this issue. I would really appreciate if you could help me to solve it.

Thanks.

[red.free]

From your screen shot I can't see the full error number.  What error are you getting now?

[Golareh]

Error -1073807299

[red.free]

Have you looked into this?

http://digital.ni.com/public.nsf/allkb/AD03F1520934D67F86256D4B001DC2CE