OPC UA Tango Device Server

# 10 months ago
emorales	Hello, We will start working on a Tango device server to control a new pulsed magnet "control unit". This "control unit" will have, as a communication interface, Siemens PLC with OPC UA protocol and a classical TCP socket connection. I am trying to find if someone inside Tango community had developed a device server (or something similar…) to communicate with Siemens PLC via OPC UA using something like Python FreeOPC UA library or C++ FreeOPC UA library. Thank you in advance. Kind regards Emilio Morales

# 10 months ago

Hello,
We will start working on a Tango device server to control a new pulsed magnet "control unit". This "control unit" will have, as a communication interface, Siemens PLC with OPC UA protocol and a classical TCP socket connection.

I am trying to find if someone inside Tango community had developed a device server (or something similar…) to communicate with Siemens PLC via OPC UA using something like Python FreeOPC UA library or C++ FreeOPC UA library.

Thank you in advance.

Kind regards
Emilio Morales

# 10 months ago
Reynald	Hi Emilio, Did you look at the OPC UA related existing Tango Classes which are listed in the Tango Classes Catalog? —> https://www.tango-controls.org/developers/dsc/search/?search=opc Cheers, Reynald Rosenberg's Law: Software is easy to make, except when you want it to do something new. Corollary: The only software that's worth making is software that does something new.

# 10 months ago
emorales	Hi Reynald! Thank you! Next time I will check here in advance. I will try with these Tango Classes and in case of problems I will contact related developers. Thank you again. Kind regards Emilio Morales

# 9 months ago
Thomas	Reynald Did you look at the OPC UA related existing Tango Classes which are listed in the Tango Classes Catalog? —> https://www.tango-controls.org/developers/dsc/search/?search=opc I would not bother, Emilio. The devices there are unmaintained. If you are considering PyTango, the perhaps you should get in touch with the LOFAR2.0 people. When I worked there, we created an attribute wrapper that maps OPC UA attributes to Tango Controls attributes. –> https://git.astron.nl/lofar2.0/tango There this might be of interest to you: https://git.astron.nl/lofar2.0/tango/-/blob/master/tangostationcontrol/tangostationcontrol/clients/opcua_client.py Edited 9 months ago

# 9 months ago

Thomas

Reynald
Did you look at the OPC UA related existing Tango Classes which are listed in the Tango Classes Catalog?
—> https://www.tango-controls.org/developers/dsc/search/?search=opc

I would not bother, Emilio. The devices there are unmaintained.

If you are considering PyTango, the perhaps you should get in touch with the LOFAR2.0 people. When I worked there, we created an attribute wrapper that maps OPC UA attributes to Tango Controls attributes.

–> https://git.astron.nl/lofar2.0/tango

There this might be of interest to you: https://git.astron.nl/lofar2.0/tango/-/blob/master/tangostationcontrol/tangostationcontrol/clients/opcua_client.py

Edited 9 months ago

# 9 months ago
emorales	Hello Thomas! Thank you for the information! I will check it! Kind regards Emilio Morales

# 9 months ago
Andy	Hi Emilio, in general I would still look for device classes in the catalog because even if a certain number are not actively maintained (many of them are) they can give you a good starting point. Concerning OPC-UA I am aware of a few developments from the past. I remember that s2innovation was the last to have a working OPC-UA device class. Maybe they can give you some input. Of course the one from LOFAR if it is actively used is also a good option. It would be interesting to know which one you decide to use in the end. Cheers Andy

# 9 months ago

Andy

Hi Emilio,

in general I would still look for device classes in the catalog because even if a certain number are not actively maintained (many of them are) they can give you a good starting point.

Concerning OPC-UA I am aware of a few developments from the past. I remember that s2innovation was the last to have a working OPC-UA device class. Maybe they can give you some input. Of course the one from LOFAR if it is actively used is also a good option.

It would be interesting to know which one you decide to use in the end.

Cheers

Andy

# 9 months ago
emorales	Hi Andy, Andy in general I would still look for device classes in the catalog because even if a certain number are not actively maintained (many of them are) they can give you a good starting point. I totally agree with you. In the future I will search first on class catalog as Reynald suggested too. The idea of this post is not to duplicate effort on things that TANGO community has already developed. Andy Concerning OPC-UA I am aware of a few developments from the past. I remember that s2innovation was the last to have a working OPC-UA device class. Maybe they can give you some input. Of course the one from LOFAR if it is actively used is also a good option. Thank you for your help. I will check it. If I am not wrong, in the last TANGO community meeting SOLEIL show us a OPC-UA based communication, one using a OPC-UA server embedded on PLC and other solution based on PANORAMA OPC-UA server. Andy It would be interesting to know which one you decide to use in the end. Yes, of course! We will let you know our final decision. Kind regards Emilio Morales Edited 9 months ago

# 9 months ago

emorales

Hi Andy,

Andy
in general I would still look for device classes in the catalog because even if a certain number are not actively maintained (many of them are) they can give you a good starting point.

I totally agree with you. In the future I will search first on class catalog as Reynald suggested too. The idea of this post is not to duplicate effort on things that TANGO community has already developed.

Andy
Concerning OPC-UA I am aware of a few developments from the past. I remember that s2innovation was the last to have a working OPC-UA device class. Maybe they can give you some input. Of course the one from LOFAR if it is actively used is also a good option.

Thank you for your help. I will check it. If I am not wrong, in the last TANGO community meeting SOLEIL show us a OPC-UA based communication, one using a OPC-UA server embedded on PLC and other solution based on PANORAMA OPC-UA server.

Andy
It would be interesting to know which one you decide to use in the end.

Yes, of course! We will let you know our final decision.

Kind regards
Emilio Morales

Edited 9 months ago

# 9 months ago
YMA	Hi Emilio, At SOLEIL there is an ongoing development of an OPCUA device server based on Eclipse Milo. The colleagues in charge of this development are currently off. We can exchange when they will be back. Regards, YM