1. How to Integrate LabVIEW Applications into a Tango Control System
Tango Meeting – ONERA – Toulouse – France
N. Leclercq – Synchrotron SOLEIL

2. About this talk… Aim Part 1 : Part 2 : overview of a work in progress
main motivation: turning a LabVIEW application into a Tango device server
Part 1 :
foundations & core components of the proposed solution
how to write a Tango device in LabVIEW: the laborious way
Nicolas Leclercq - Synchrotron SOLEIL
Part 2 :
solution enhancement on LabVIEW side
how to write a Tango device in LabVIEW: the magical way
Birgit Ploetzeneder – ELI Beamlines

3. Problem & Solution The problem The current offer The solution
how to integrate subsystems delivered with a LabVIEW interface into a TANGO control system?
The current offer
the Tango binding for LabVIEW: a pure client platform :-(
the DataSocket approach: very limited solution, works but doesn’t scale well
The solution
add server support to the existing Tango binding for LabVIEW
100% native [no indirection, no intermediate protocol]

4. Tango Bindings for LabVIEW [Vis library] Client VIs
Tango Bindings for LabVIEW [C++ shared library]
Client API
Client API
Tango Core [C++ shared library]

5. Tango Bindings for LabVIEW [Vis library] Client VIs Server VIs
Tango Bindings for LabVIEW [C++ shared library]
Client API
Server API
Tango Core [C++ shared library]
Client API
Server API

6. LabVIEW Application w/ Tango interface
Tango Bindings for LabVIEW [Vis library]
Client VIs
Server VIs
Tango Bindings for LabVIEW [C++ shared library]
Client API
Server API
Tango Core [C++ shared library]
Client API
Server API

7. The LabVIEW Server API [main VIs]
Starting up
Handling client requests
Shutting down

8. The LabVIEW Server API [impl. pattern]

9. The LabVIEW Server API [main VIs]
Cmd ArgIn & ArgOut
Get/Set Attr Value
Misc.

10. Supported Tango features
So far, support for Tango 9 minus {Pipes, DevEncoded}
Pipes support to be studied [e.g. mapping? LV Cluster?]
Almost everything configured via POGO
e.g. default prop. value, polling, …
one exception: inheritance mechanism [to be implemented]
Everything taken in charge by the Tango kernel
e.g. [write,read]_attributes, events, …

11. Demo: let’s rewrite TangoTest in LabVIEW
Step 1
1.1 - open POGO,
1.2 - define the device interface
1.3 - the generate the XMI file (and nothing else)
Step 2
register your device into the Tango database
Step 3
specify the path to the XMI file [repository]
dedicated PathToPogoXmiFile class property
Step 4
implement the device in LabVIEW using the provided VIs
done!

12. Thanks! Any question?