I am looking for some information on ELAN protocol for Siemens analyzers and also some information on AK protocol for California Analytical Analyzers. Mainly I need a starting point to communicate with these devices for labview.

[cli248]

Hi Dave,

Thank you for sending the zip archive via Gmail. I have successfully received your email and the attachments.

Appreciate your offer for further guidance!

Best regards,

Chen

[SPengineer]

David, 

I'm an engineer working on fire research for the FAA. We recently got 4 Seimens Ultramat 23 gas analyzers, and have been having some issues reading the values over the analog outputs. I'd like to use the ELAN RS485 output to read the values from them, but I don't really know where to start as I'm fairly new to serial communication. Would you be able to send me a copy of the files you've been sharing? I believe that  they would help me a lot. 

I'm believe I have the units wired correctly (half duplex RS485, connected to a Perle SDG4 P serial device server and connected to my computer running labview as virtual COM ports), but I can't test them without having the right communication information. The serial device server is not showing any activity but I'm not sure if that is from having the unit wired incorrectly or not having the computer reading the values. I can share how I have the wiring connected if you'd be able to help with that as well. I'd appreciate any guidance you could provide.

[DavidBoyd]

SPengineer,

I replied via private message with my email address.  I'm sure we can get this to work.

Wow, four ULTRAMATs, that's a serious installation!

Likely no serial activity observed (yet), since the gas analyzers (by default) are set to answer-when-asked.  They can be made to broadcast their readings (and my LabVIEW code will accommodate this), which may be enough, but you lose some flexibility with interacting with them this way.  You can easily poll them for regular readings and thus retain the ability to send other commands too.

Dave

[SPengineer]

That's great! I've responded over email, thank you for getting back to me. 

And yes, it's a lot to deal with on our end. We do fire research so we have to take a lot of of gas concentration measurements. These units are actually replacing 4 Emerson/Rosemount units that ran into some issues, and I'm just working on getting them integrated into our data collection systems.

[mauriziob]

Dear Dave,

We have in our lab 5 ULTRAMAT 23 and 1 ULTRAMAT 6.

Today all those system are acquired via 4-20 mA with several cFP systems.

Since we need to release some 4-20 mA channel, we would like to read the instruments with their ELAN serial

communication.

Are there the chance to get your Library for ELAN communication?

It could be very helpful.

Today we have Labview 2015 SP1 version due to compatibility with those quite olde cFP system.

Kind Regards,

MB

[DavidBoyd]

MB,

Tried to send you a PM but the forum interface tells me you don't have PM enabled.  Maybe since you're brand new (and first posters' PM privs are delayed for a day or two).

Send me an email address (for your sake, preferably via PM if you can, else obfuscate it here) and I'll email you a zip archive along with some implementation notes in the email.  I think this was all saved in LV 2011, so I would not expect problems loading into LV 2015.

This was code I developed nearly two decades ago at a prior employer.  It'll arrive via a personal Gmail account since my present employer (Abbott Labs) is pretty restrictive about sending zip attachments to outside addresses.

I can provide some help via email getting you started, but this thread you posted to has a lot of subscribers who can help as well.  Please note, I haven't touched a Siemens gas analyzer in over six years at this point.

Best regards,

Dave

[mauriziob]

Dear Dave,

Thanks a lot, here my e-mail address:

maurizio dot bologna at fondital dot it

I have another question for you.

Do you know if some one has developed a similar library for ECO PHYSICS CLD 700 EL HT instrument? 

Kind Regards,

MB