String for Reading PV from Eurotherm 2404

[cath]

THANKS YOU VERY MUCH ALL. The connection between Labview and Eurotherm 3508 with ethernet is OK.
Have a good day !

Cath

[timoteo]

Hello,

Did you send programs to the eurotherm? or just SP?

I am triyng to send a program to the eurotherm to perform it later using the comand run! 

Can you post your code, maibe it can help me...

Thanks

Tim

[cath]

Hello,

I send you my vi. In fact, I send to Eurotherm only the PV value in two channels.

(Labview 7.1)

Cath

[cath]

Sorry,

the vi is not complete.

See the next

Cath

[yenknip]

You are able to program a Eurotherm device with the iTools programmer. What you are able to do on it obviously depends on the controller you are using, but it may well be worth looking into

 

Message Edited by yenknip on 03-26-2009 02:27 PM

[timoteo]

Hello Cath 

Thanks for the Vi can you send the MB Ethernet Master Query.

How do you control temperature that way?

Because i always use the program function from the eurotherm models like 2408 and 2704 but this one 3508 is put my head upside down...

Do you know anything about a multiply factor for temperature?

Hi, Ed thanks for the response i know i can use the Itool i always use it to see if the instructions where writen correctly.

But i want to make an itegrated solution send info and read data, put it run.

Thanks

Tim

Message Edited by timoteo on 03-26-2009 09:36 AM

[smercurio_fc]

Continued here.

[cath]

Hi Tim,

next the MB...

For the control of temperature, I have an external loop who calculate the temperature (SP) and send ton my eurotherm. vi.

For the multiplicator, you see I multiply the temperature by a factor of 100, I don't remember exactly, but it was to obtain the good value (resolution of eurotherm) .

Cath

[timoteo]

Hi Cath

The MB is not complete it as sub VI that are not inclued...

Thanks and sorry for the troubles

Tim

[cath]

Sorry,

you must download the ModBus library in the next adress.

http://zone.ni.com/devzone/cda/epd/p/id/4756

Please, see the note with Thorsten in the prewiew pages in this forum.

Cath