AB 1769-L18ERM-BB1B Embedded IO - PLCS.net

ste1070 · August 7th, 2019, 11:54 PM

Hi, I have a compact logix processor with embedded IO but the IO is not responding nor flashing on the self test when boots up. The IO light is just flashing and it does not see the IO in project. Any thoughts? Thanks

jstolaruk · August 8th, 2019, 06:19 AM

Share the project, may be something in the configuration.

ste1070 · August 8th, 2019, 10:13 AM

Sure but even creating a blank project doesn't seem to help. I'm guessing cause of catalogue number embedded IO should automatically be set up and it does appear in the tag database.

Ill sort a copy of project out and post. Thanks for your reply

ste1070 · August 8th, 2019, 10:25 AM

here you go

Ken Roach · August 8th, 2019, 10:27 AM

My recollection is that the embedded modules do flash their channel indicator LEDs during startup, so if yours don't do that and are showing a faulted connection to the controller, I would say that they are defective out-of-the-box.

Do you have any expansion I/O modules connected to the POINTBus ? Do those work ?

jstolaruk · August 8th, 2019, 10:39 AM

I'm trying to recall if on the face of the PLC there are two power inputs. One would be for processor power and one is for I/O power. If so, then both may need to be powered.

ste1070 · August 8th, 2019, 10:46 AM

Yes, I have both the processor and field power connected. Processor will run but IO light flashing.

mike3475 · August 8th, 2019, 11:33 AM

maybe you forgot the end cap.

https://rockwellautomation.custhelp....ype-03-code-23

ste1070 · August 8th, 2019, 04:28 PM

this model doesn't need end cap as uses 1734 point IO type modules.

jholm90 · August 8th, 2019, 06:32 PM

Yep there's troubles afoot because I booted up my l16 yesterday and all the controller hardware IO flashes in sequence before point io expansion cards.

Try to reflash the firmware and verify expansion IO cards on 1st page of controller properties is set to correct number of installed point IO cards

JCreel · May 25th, 2023, 01:54 PM

I know this is an old thread, but i came across the same issue with a 1769-L18ERM-BB1b. I found out that you have to set the proper expansion modules in the controller properties. The default is 8 from a blank project, so if you are not using any additional modules, then it has to be set to 0. Then the IO will no longer claim that its faulted.

Hope this is useful.

August 7th, 2019, 11:54 PM	#1
ste1070 Member Join Date: Mar 2016 Location: Vancouver Posts: 7	AB 1769-L18ERM-BB1B Embedded IO Hi, I have a compact logix processor with embedded IO but the IO is not responding nor flashing on the self test when boots up. The IO light is just flashing and it does not see the IO in project. Any thoughts? Thanks

August 8th, 2019, 06:19 AM	#2
jstolaruk Lifetime Supporting Member Join Date: Dec 2004 Location: Detroit, SE Michigan Posts: 3,808	Share the project, may be something in the configuration. __________________ I don't always test my code but when I do, I do it in production.

August 8th, 2019, 10:39 AM	#6
jstolaruk Lifetime Supporting Member Join Date: Dec 2004 Location: Detroit, SE Michigan Posts: 3,808	I'm trying to recall if on the face of the PLC there are two power inputs. One would be for processor power and one is for I/O power. If so, then both may need to be powered. __________________ I don't always test my code but when I do, I do it in production.

May 25th, 2023, 01:54 PM	#11
JCreel Member Join Date: Apr 2020 Location: Mississippi Posts: 46	I know this is an old thread, but i came across the same issue with a 1769-L18ERM-BB1b. I found out that you have to set the proper expansion modules in the controller properties. The default is 8 from a blank project, so if you are not using any additional modules, then it has to be set to 0. Then the IO will no longer claim that its faulted. Hope this is useful. __________________ ******** JCreel ******** "Do or Do not, There is No Try" - Yoda

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August 8th, 2019, 10:13 AM	#3
ste1070 Member Join Date: Mar 2016 Location: Vancouver Posts: 7	Sure but even creating a blank project doesn't seem to help. I'm guessing cause of catalogue number embedded IO should automatically be set up and it does appear in the tag database. Ill sort a copy of project out and post. Thanks for your reply

August 8th, 2019, 10:27 AM	#5
Ken Roach Lifetime Supporting Member + Moderator Join Date: Apr 2002 Location: Seattle, WA Posts: 17,101	My recollection is that the embedded modules do flash their channel indicator LEDs during startup, so if yours don't do that and are showing a faulted connection to the controller, I would say that they are defective out-of-the-box. Do you have any expansion I/O modules connected to the POINTBus ? Do those work ?

August 8th, 2019, 10:46 AM	#7
ste1070 Member Join Date: Mar 2016 Location: Vancouver Posts: 7	Yes, I have both the processor and field power connected. Processor will run but IO light flashing.

August 8th, 2019, 11:33 AM	#8
mike3475 Member Join Date: Feb 2013 Location: brooklyn ,NY Posts: 285	maybe you forgot the end cap. https://rockwellautomation.custhelp....ype-03-code-23

August 8th, 2019, 04:28 PM	#9
ste1070 Member Join Date: Mar 2016 Location: Vancouver Posts: 7	this model doesn't need end cap as uses 1734 point IO type modules.

August 8th, 2019, 06:32 PM	#10
jholm90 Member Join Date: Mar 2012 Location: Ontario Posts: 133	Yep there's troubles afoot because I booted up my l16 yesterday and all the controller hardware IO flashes in sequence before point io expansion cards. Try to reflash the firmware and verify expansion IO cards on 1st page of controller properties is set to correct number of installed point IO cards

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