Communication with HART devices

[kaush]

Hi , I am trying to communicate with HART positioner from Labview. I am using LV 8.6 and HartOPC server for communication.

But i am not able to write thro the HartOPC server.

Is there any way to write my commands without using extra hardware. I dont want to use NI DAQ 😞

Please help me with this

[AdnanZ]

How are you communicating with the OPC server; using datasocket or LabVIEW DSC?

[kaush]

Sorry i did not mention that..

I am using Datasocket

[AdnanZ]

Well, you can definitely communicate to your HART OPC server using datasocket without using additional hardware or software.

---

kaush wrote:

But i am not able to write thro the HartOPC server.

---

What exactly have you tried? Have a look at the following KB article and the links that are mentioned at the bottom of that article:

How Do I Connect to an OPC Server Using DataSocket?

[kaush]

Thanks for the information.

I shall look into that.

Right now i am using NIDAQ 6036E to write. I am using Additional hardware which converts 0-10V to 4-20 mA. 

[kaush]

Hi,

I read that doc. The problem is not with the datasocket. My Hartopc server is not allowing write. Is there any other way to communicate with the devices.

Thanks in advancve.

[AdnanZ]

Well, what other protocols does your device support? And, do you have the command structure for those protocols? At this point, I would recommend that you contact support for Hart to be sure of what's going on.

[kaush]

I have different actuators which can support PROFIBUS and FF . For FF i can directly use VI's of NI and NIFBUS Hardware.(By creating XML file)

I am facing problems with HART and PROFIBUS.

For PROFIBUS i have Softing's interface card. But i dont know how to communicate with labview directly.

[kaush]

Please someone reply for this.

[Ben]

---

kaush wrote:

Hi,

I read that doc. The problem is not with the datasocket. My Hartopc server is not allowing write. Is there any other way to communicate with the devices.

Thanks in advancve.

---

I have not worked with that particular OPC server but with all of the OPC servers I have had contant with they had a configuration utility that let me define read/write access as well as update rates etc. If you were one of my coleges calling in from site, I'd ask you to start looking for that utility and either read the manual or start some "fat fingering".

If you have errors being returned by the DataSocket write operations, chace those down first.

Ben