off-hook and DSC

[Ben]

I am looking to update an old BridgeVIEW app that used the "off-hook" property that was available in Lookout Protocol drivers.

If any of you have managed to migrate an app that uses that property to LV DSC, I would be very interested in hearing about the challenges involved.

Thank you!

Ben

[Ben]

Bump!

Since nobody els has faced this challenge so now I'd like an NI AE to respond to what is NI migration plan for this issue?

The "Off-hook" proprty allowed us to control when FP unit where contacted via a dial-up. The Off-hook would be set false and phone number set, then the "Off-hook" set true to to start the dialing.

So....

How do I migrate the "off-hook" functionality to the world of Shared Variables?

Ben

[Andy F.]

Ben,

If you could post a little more information about the specifics of the application it may be easier to find a migration plan for the offhook property. You mention the Lookout Protocol drivers, are you still going to be using them, IAOPC or another OPC server? Any more information about the dial-up connection that you could share? Thanks!

Andy F. 

[Ben]

HI Andy,

A cut-n-paste from the other thread (in Lookout)

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* The application won E-Buisness of teh year award about 8 years ago. It is a Vendo Managed Inventrory system based on BridgeVIEW and leveraging of the serial version of FP units. In a nut shell. One of a pool of machines running this app queries a DB for sites that are due for a new measurement. When one is found the connection method (stored in the DB) is used to specify the phone number of the FP unit. Once the phone is set the Off-hook is set true and this triggered Lookout to dial-up the FP and get a fresh set of readings. Once the reading where acquired the off-hook is set false and the query start again for another customer. So...

The Off-hook property is what made this all work. Without it, I would have to re-write the Lookout part of this app myself! Concidering there are many different protocols that would have to be supported, this is no trivial task.

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Since this was a BridgeVIEW app it is hard to decide if this is a LV, DSC, or Lookout topic. What I really need to know is when the decision was made to abandon the early DSC version and replaced all connectivity Shared Variables, what functionality was inserted into what aspect of the Shared variables to cover this functionality.

Ben

[Hueter]

This thread is answered here, on a post on the Lookout forum