EtherNet IP Communication

[leith]

I'm evaluating Labview right now to see if it's what my company wants to use.  I'm trying to test out Ethernet/IP communication to a AB CompactLogix and keep getting a CIP error.

I can't get a clear idea of what the error actually means.

I've attached a screenshot of the error window.  Any ideas?

[Guruthilak]

is "0" a port name? and is valid? can it be accessible from other applications?

[Mathan · Accepted solution]

see here

http://forums.ni.com/ni/board/message?board.id=nilabs&message.id=217&query.id=1419258#M217

[leith]

I originally interpreted the first slot in the backplane as zero, when it should have been 1.  Also didn't realize there was a third parameter for the network path.

Thanks for the help!!

[gyachts]

I'm trying to read IO from a AB/Rockwell 1794-AENT/B Ethernet/IP interface module with an 8 port analog module attached.  I've gotten my VI to where I can read the status register and identify that I'm talking to the interface module.  I can't seem to figure out how to read the IO module data.  Can anyone share an example VI?

Thanks.

Greg

[gyachts]

I'm talking directly to the 1794-AENT/B and there isn't a PLC in the system.  Just the PC and the Ethernet IP IO module.

Greg

[ACS-AKP]

Greg, did you get it to work?  I'm trying to do the same with LabVIEW on a PC talking directly to the 1794-AENT/B with I/O.

Thanks, Tony

[gyachts]

The only thing I have been able to do so far is read the 1794-AENT/B information registers.  Model, versions etc.

Greg

[galimba]

Hello,

I have the Ethernet/IP driver kit installed, and am able to do tag reads, however, I can't seem to get the tag writes correctly.  Can I get some help as to possibly format the informatio? I'd like to pass a boolean to a bool bit in the PLC.

PLC - AB Micrologix

Address: 192.168.1.1,1,0 (Reads just fine with this address entered)

Tag: HMIStartStop (String, also reads just fine)

Data passed:  array of booleans, all false, 9 elements.

I don't get an error, but I also don't get any updated tag from the PLC.  It currently stays at 1, and I want to drive it to 0.

Any would would be much appreciated.

[nonecure]

Maybe this will help.