EtherNet IP toolkit to use for point I/O Allen Bradley

[CarlosLuevano]

Recently I downloaded EtherNetIP toolkit and I do not know how to use.

I have to read and to write values into the point I/O Allen Bradley to control some devices from PC to point I/O.

It will be useful if you can help me with some examples. I used Get Atributte Single.vi but I do not know What are Class, Instance and atributte inputs in VI.

For example a input in the point I/O is a emergency stop and I need to monitor this input from PC, but I do not how to use the tookit. Another example is I have to active some actuator (output point I/O) from PC.

I appreciate you can give me information.

Thank you.

 

[Tim_S]

I've only tried to get the Ethernet/IP toolkit working talking to a Rockwell S7-300 PLC. We set up the PC/PLC communication to be an assembly (remote I/O in the PLC) so we could transfer a block of data. This was done rather than read/write tags as there was 7 msec overhead per tag and we had hundreds of tags. There was the option of creating a complex tag (tag consisting of tags) however that required a lot of work encoding/decoding using Rockwell documentation that was not easily located.

I expect you'll find the Ethernet/IP toolkit cannot act as a master (not certain the terminology for Ethernet/IP -- the NI and Rockwell terminology don't quite match) in the system and the Point I/O will require one to communicate.

 

[CarlosLuevano]

Thank you for your answer.

Well, I have been doing test with the Ethernet toolkit, specially with Get Attribute Single.vi as show in the image but I have only gotten information with class = 1, instance = 1 and attribute = 1 and the information that I got was model information. I want to read data from my inputs slots connected to Point I/O and I want to write data to my outputs slots connected to Point I/O but I do not how to configure classes, instances and attributes for every slot.

 

I think this configuration is made by point I/O but I am not sure.

If anybody can help me, please.

[Tim_S]

Every time I've called NI tech support on Ethernet/IP the person has to go ask the specific group in NI that develops the product. The NI forums are monitored by NI personnel, so you might have better luck there on this one.

https://forums.ni.com/t5/Industrial-Communications/bd-p/260

[CarlosLuevano]

Thank you Tim_S

I am going to check in the NI Forum.

Best regards.