1783-etap fault monitor

gjsangster · Sep 18, 2011

I have a system that is using a 1756-L61 which is communicating via ethernet to a remote rack using a 1756-ENBT. The client wanted a redundant communication path so and wanted to know when one of these paths were lost by flashing a light on the remote rack. Talking with the local distributor he recommended using two 1783-ETAP. I was wondering how you would get notification from the Etap that one of these communication paths has failed.

elmatador · Sep 18, 2011

There is an add on profile for the etap you can add to rslogix. It will give you diagnostics. Wouldn't you rather go with 1756-en2TR? You will need one in each rack. It has two ports on it. You can use it on a ring or point to point.

gjsangster · Sep 18, 2011

This is my first project using control logix and went with what the distributor suggested to use now I'm stuck with the ETAP. I have the add profile but how do I access the port diagnostics in my ladder logic?

gjsangster · Sep 18, 2011

Here is a crude drawing of the network

elmatador · Sep 18, 2011

gjsangster said:
This is my first project using control logix and went with what the distributor suggested to use now I'm stuck with the ETAP. I have the add profile but how do I access the port diagnostics in my ladder logic?

Hey buddy, no worries with the ETAP, it will work perfectly fine with your architecture. In order to get the diagnostics you will need to use ladder logic to access the diagnostics. This will be accomplished by message instructions to the ETAP. I have attached a whole bunch of knowledgebase documents on how to go about doing this. I would highly recommend you sign up on rockwell's knowledgebase website. You can find a wealth of information. Anyway, in your I/O tree, drop in your ENBT card, followed by the 1783-ETAP. Then follow the the documents. If you have the equipment in the office you can test everything easily.

I gotta go to a site near Edson for the next 10 days, but will try and respond if you have any other questions.

elmatador · Sep 18, 2011

Hey man,

Looks like the max i can attach for pdf's is 300kb. Please go to Rockwells Knowledgebase website:

You need to look up the following tech note numbers, just put them in the search field:

22261
63336
122180
452172

These notes will help answer most of your questions and teach you how to get the diagnostics.

gjsangster · Sep 19, 2011

Thanks for the help I'll take a look at this and see what I can do. I'm on site now out in northern BC trying to get this working so setting up a test bench is not an option.

JacquesBeenen · Jul 13, 2023

Message instruction

elmatador said:
Hey buddy, no worries with the ETAP, it will work perfectly fine with your architecture. In order to get the diagnostics you will need to use ladder logic to access the diagnostics. This will be accomplished by message instructions to the ETAP. I have attached a whole bunch of knowledgebase documents on how to go about doing this. I would highly recommend you sign up on rockwell's knowledgebase website. You can find a wealth of information. Anyway, in your I/O tree, drop in your ENBT card, followed by the 1783-ETAP. Then follow the the documents. If you have the equipment in the office you can test everything easily.

I gotta go to a site near Edson for the next 10 days, but will try and respond if you have any other questions.

How did you setup this msg instruction?

1783-etap fault monitor

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