Support for communicating allen Bradley PLC

[kps001]

How to communicate with allen bradley plc without using modbus and ethernet ip.

Please Give ideas to communicate

 Thanks in advance

[GerdW]

Hi kps,

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@kps001 wrote:

How to communicate with allen bradley plc without using modbus and ethernet ip.

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You can have the PLC output values on some digital/analog outputs and read them using a DAQ(mx) device with LabVIEW. You can also use the other way around to send data from LabVIEW to BradleyPLC…

Why don't you want to use "ready-to-use" communication busses, like Modbus or EthernetIP? (You may add modules to your PLC which allow other kind of busses/protocols.)

[kps001]

Thanks for the fast reply

 We are using Compact logics in Allen Bradly PLC,We don't have license For Ethernet IP communication toolkit,

I dont know to read an data from PLC by NAQ(mx) also

So if it is possible please give some examples....or some other ways to communicate

[GerdW]

Hi kps,

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@kps001 wrote:

We are using Compact logics in Allen Bradly PLC,We don't have license For Ethernet IP communication toolkit,

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Are you using "Compactlogix"? (That's all I found related to AllenBradley…)

Which hardware do you use?

Which licenses do you use?

What hardware is available on the PLC side?

Which LabVIEW version/license do you use?

Which hardware is available on the LabVIEW/computer side of the communication?

How do you want to connect PLC and computer?

So many questions, so little information from you…

[kps001]

Allen-Bradely Compact Logix(1769-L33ERM) PLC

Labview version 2015

There is no hardware we are using for communication 

So I dont have a license to use Ethernet IP toolkit so please guide me which protocol to use

[GerdW]

Hi kps,

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@kps001 wrote:

Allen-Bradely Compact Logix(1769-L33ERM) PLC

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According to the manual I found for that PLC it supports either EthernetIP or DeviceNet (via special module).

When you want to communicate with that PLC then you should use one of these options!

You may read the manual on your own! Maybe AB offers other options with other PLC modules?

[rolfk]

They also seem to have a built in serial port so with an RS-232 port on your computer, a correctly wired cable, some custom programming in your PLC to build some protocol of your own and according VIs on the LabVIEW side, you could do this too. Of course serial is much lower speed than an ethernet connection like EtherNet/IP could be but for a few value exchanges every second that's not a problem.