CarlosLuevano

Point I/O 1734-AENT to LabvIEW

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Hello,

I am new in PLCs, I hope you can help me.

We are working to communicate point I/O 1734-AENT Series B to PC (LabVIEW) by Ethernet/IP. We need to read inputs from slots and need to write output to slots and the library we are using in LabVIEW needs class, instance and attribute parameter to comunícate with specific slot. I read those parameters you can configure that in the web page allen bradley (you put the IP point I/O in the browser internet) and then configure those parameters in the tab diagnostic messaging but for my case that tab is not visible, so I could not configure this part.

Can anybody help for that? and help me to give me more information about class, instance and attribute CIP (Common Industrial Protocol).

Best regards

Carlos Luevano

Test Engineer specialized in Development Software LabVIEW.

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The setup...1734-AENT Ethernet/IP remote I/O rack that will communicate with a PC running National Instruments LabVIEW.  The 1734-AENT module communicates via Ethernet/IP utilizing CIP.  http://literature.rockwellautomation.com/idc/groups/literature/documents/um/1734-um011_-en-p.pdf

Can you ping the 1734 module from the PC?  Have you addressed the 1734 module?

Do you have the Ethernet/IP driver for LabVIEW?  http://sine.ni.com/nips/cds/view/p/lang/en/nid/209676

This may be helpful, similar application with 1734-AENT remote rack communicating with a 3rd party controller.  https://forums.robotstudio.com/discussion/8714/io-update-rate-moved

Have you gone online with the 1734-AENT module and configured the rack size?

I cannot remember if the 1734-AENT module has a built-in web server.  After setting communication of the 1734-AENT module, and cycling power, and verifying you can ping the module, open up a web browser and enter the 1734-AENT Ethernet/IP address.  The module will need to be configured for words of rack size read and write (typically 1 word adapter, 1 word for each module, 2 words for "special" modules).  Once addressed, cycle power, rack size configured, cycle power...in the PC, configure the CIP communication to this rack with X words read and X words write.  These words will have your 1734-AENT I/O module data.  Stripping that data out...that is an exercise for LabView.

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Hello Kaiser_will,

Thank you, about your questions.

I can ping 1734 module from the PC, actually I have gotten information from LabVIEW module with class = 1, instance = 1 and attribute = 7 and this information was the model of module (1734-AENT adapter Ethernet), but this information I do not want to get, the desired information is to read inputs slots and to write to outputs slots.

and of course, I have Ethernet/IP driver for LabVIEW.

The section where you need to configure the class, instance and attribute information is in the web server (as show in the attached image gotten for the datasheet) but my problem is that for my point I/O this section (diagnostic messaging) is not able and I do not know why. Can you have any suggestion or idea for my problem?

I hope you can help me.

Thanks anyway.

Carlos Luevano

Test Engineer specialized in Development Software LabVIEW.

DiagnosticMessaging.png

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For your application, the 1734-AENT module will not display the Network Settings, or the Network Settings are greyed out and one cannot alter them?  Refer to Appendix B; Page 100 is the configuration for this module.  http://literature.rockwellautomation.com/idc/groups/literature/documents/um/1734-um018_-en-e.pdf

This document should assist you in stripping the I/O data from the words of input and output data.  http://literature.rockwellautomation.com/idc/groups/literature/documents/um/1734-um001_-en-p.pdf

There are (3) areas that may be causing the problem...Firmware version (the firmware may be initial and needs to be flashed to latest version to unlock features), Configuration Without RSLogix (all 1734-AENT literature I have found requires RSLogix5000 [A-B PLC programming software] to configure the AENT module with all of its resident I/O modules), 1734-AENT for a FieldBus application (I have not verified that 1734 Point I/O is capable with an Ethernet/IP Fieldbus and not utilizing Rockwell's RSLinx for communication or RSLogix for configuration).

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