Communicating with a Modicon premium PLC through Ethernet?

[Gops]

Hi,

I want to communicate with a Modicon Premium PLC through ethernet port. Can someone give more details regarding this?

Regards

Gopal

[unclebump]

Are you going to use Modbus protocol or Unitelway?? If Modbus, you can use the NI Modbus Library. If Unitelway, look at an OPC server and the NI DSC engine. I am presently using Telemecanique OFS opc program and the DSC engine with the Premium Terminal port. Using Unitelway, you can only read memory bits.words. Not direct ASI network or Interbus addresses.

[unclebump]

Are you using PL7 or UNITY programming software??

[Gops]

Hi,

I am using Modicon TSX permium PLC. I will be using the unity software.

Iam new to PLC's and Iam not aware of Unitelway. Can you give me some more highlights on this?

Regards

Gopal

[unclebump]

What Unity ethernet card are you using?? Or is it built into the plc??

Here is some Unitelway info. This is Telemecanique's version of modbus, but it isn't as functional as Modbus. I'm not sure what the Unity hardware uses.

[Gops]

Hi,
Iam using the Modicon TSX Premium PLC - TSX P57 5634 controller. This has aan ethernet port built in the controller itself.

Iam trying to build an application where I would read the global variable in the PLC processor memory space.

Regards
Gopal

[unclebump]

Your easiest route will be to find a way to make the plc ethernet port use modbus protocol. Then you can use the NI Modbus library. There are lots of forum examples that use modbus serial and ethernet communications. Then you can use standard labview software without the DSC engine.

[unclebump]

Try this file for the plc side of things.

Also see this thread for a modbus ethernet query .llb file.

http://forums.ni.com/ni/board/message?board.id=170&message.id=144522&query.id=35841#M144522

[kc64]

I'm hoping to revive this thread after five years. 🙂

My project requires establishing a connection over the network to a TSX PLC using the ETY 4103 Ethernet interface.  The datasheet indicates that the module supports Modbus and I have used Modbus before.  What I don't know is the specifics of the messaging, namely the contact and coil numbers which seem to be nowhere in the PLC documentation.  I realize that this is probably a message to post on the PLC's forums but being a LV guy and not a familiar with the PLCs, I was hoping someone out there with overlap might be able to give me some pointers.

[unclebump]

look at page 83 and 84 in the above zip file.