Ethernet IP connection - Invalid connection size

I have a used LR Mate 200iD robot and I am trying to set up an Ethernet IP connection. I have read that with he R-30iB controller you have to use port 2 for Ethernet IP. I have it setup with the robot as 172.1.2.127 and my AB compact logix PLC as 172.1.2.125. I can ping the PLC from the robot and I can ping the Robot from my laptop and the robot shows up in RSLinx

I have a generic module setup in the PLC with 101 4 words , 151 4 words and 100 0 words.

In the robot I have 89 1 1 setup for 1 to 64.

The plc won't connect and gives an error (code 16#0109) Connection Request error. Invalid connection size. Tag: Robot:I

I looked this up on Allen Bradley's website and they said to try doubling the size so I changed them from 4 (16-bit) words to 8 but I get the same error.

If I check the adapter it shows 4 words for input size and 4 words for output size but it just shows ********* for the scanner IP.

We have an older LRmate that only has one ethernet port and we are trying to use the same settings but we always get the same error.

Any idea what I can try next. I did try the Fanuc robot AOP instead of the generic module but it gave the same error code.

Quote from M.Ozkan

Check this:

RE: Fanuc RJ3IA Ethernet/IP with Beckhoff PLC

I have tried three different cables. I have tried going directly from the robot to one of the ports on the PLC and I have tried connecting the robot and the PLC to a switch but I always get the (Code 16#0109) Connection request Error: Invalid connection size. Tag: Robot: I

I have 4 in both the input and output instances. I have tried going all of the way up to 16 words in each and still get the same error.

Quote from HawkME

You don't have to use port 2. Either port will work. Maybe that is your issue, you may have the setup on the wrong port.

I have tried both ports. I can ping the robot and the robot can ping the PLC. I have talked to Allen Bradley and they haven't been much help. They suggested i go back to RS Studio version 24 instead of 28 but it doesn't make any difference. I get the same fault.

Anyone have any ideas before I call Fanuc?

Quote from HawkME

Did you setup the data type as INT on the generic module?

Show screenshots of all Ethernet related setup on robot and PLC.

It is setup as Data_Int

Read only

IO config

Host communications

Quote from HawkME

Try deleting and recreating the generic module with the same settings.

Tried this and also tried the Fanuc robot AOP instead of the Generic and no luck.

Strange that when I set up Host Comm I can ping the PLC 172.1.2.125 but when I go to the Ethernet IP connection and ping it says Invalid Host.

Tried doing a software update from 8.30/P26 to 8.30/P64 and no difference.

I have an identical LR Mate on the shelf and I guess I will get it down and hook it up and see if that one works. If it does work I will do an image backup and restore it on the one that doesn't work.

Super frustrating!!

Quote from jmd2777

This is confusing to me. Where are you getting Invalid Host? In the Robot connection settings or the PLC connection settings?

Quote from Eduardo Oliveira

Did you try use the port1 in your configurations?

The assembly instance changes accords with the port you have used

I have tried 101 and 151 with port 1 and port 2 and it says wrong connection size.

I have tried 102 and 152 with port 1 and port 2 and it says wrong connection point.

I tried another LRMate (we purchased two identical robots) and it does the same thing.

I even tried a different Allen Bradley PLC and still get the wrong connection size error.

I guess I will have to call Fanuc.