Hello.

We need to conrol Logo! via Ethernet network using our oun Scada system.

As I understand, no one Logo conroller supports Modbus TCP.

What protocol does Logo contoller use?

Is it possible to make our own software driver for our scada to remote control Logo controller throught Ethernet network?

I mean, can we get the Logo protocol?

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Split from connect logo8 To a SCADA System .

Thank you for such a quick answer!

If I understand you corrently:

1) we can change our Logo! controllers to modern LOGO! 8.2

2) then we can read it through Ethernet by Modbus TCP - what is on/off

3) we can also remotely control it through Ethernet by Modbus TCP - switch on/off mains, change its mode (automatic, manual etc.)

Am I right?

If yes, where it is possbile to get a document describing Modbus addresses?

And one more question, if possible - how to identify the generation fo Logo controller?

The newest controller we have is in attach.

ANikulin

Thank you for such a quick answer!

If I understand you corrently:

1) we can change our Logo! controllers to modern LOGO! 8.2

2) then we can read it through Ethernet by Modbus TCP - what is on/off

3) we can also remotely control it through Ethernet by Modbus TCP - switch on/off mains, change its mode (automatic, manual etc.)

Am I right?

If yes, where it is possbile to get a document describing Modbus addresses?

And one more question, if possible - how to identify the generation fo Logo controller?

The newest controller we have is in attach.

to 1) you can buy new Logo controllers, old controllers cannot be changed with an update

to 2) over Modbus TCP/IP you can read the status of Ix, Qx, Mx, AIx, AQx, AMx, Vx,y, VBx, VWx, VDx

to 3) there is no system control like start, stop, upload or download, you only can write Mx, AMx, Vx.y, VBx, VWx, VDx

With  reading of the status you can display all actions of the program. With writing on the listed operands you can select the actions inside the Logo program, but you must program the actions depend on the status. If you use a flag like M1, you can set or reset the flag with the SCADA system. Depend on the status of M1 you can program manual mode, if M1=off and automatic mode if M1=on.

For a more detailed specification of the Logo modbus table see attachment. If you are able to program e.g. C++, C# or Visual Basic, then you also can search for Libnodave or Snap7. These are libraries to communicate with all S7 controllers and therefore also with a Logo8. You can find more libraries for communication, just search a little more intensive.

Regard, Scorp

Thanks to all for the answers!

Our customer wants to switch automatic load transfer remotely by Scada system.

Customer's automatic load transfer systems are based on Logo! controllers (some ones are old, some ones are new).

I think, using 0BA8 and a firmware version FS04 or higher will solve this issue.