Modicon PAC Forum
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Posted: 2023-06-27 02:53 AM
Hi there,
I have two "M580 HSBY CPU LEVEL 2 FOR R IO - BMEH582040" and have been trying out the swapping feature of the units.
The first CPU is set to A and the second one is set to B. CPU A is running the main program and I wanted to see if the swapping feature works by disconnecting the electricity to CPU A and see if it will swap automatically to CPU B. Unfortunately, it did not work.
Do you have any idea what to do?
Do I need to do some programming for it to work?
I thought it was all bult-in.
Best regards,
Grétar
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Posted: 2023-06-29 08:22 AM
Hi,
Check my comments below:
It would be great if you share the architecture so at least I can evaluate how the system is connected from which port to which port. I am also not sure whether you are using RIO drop with HSBY CPUs or not.
To start the investigation I would suggest the following:
If you can provide more information then it easy for me to help you with the troubleshooting, But I hope with the above comments at least you can initiate the investigation. Check the attached file for the snapshots these are only for reference purposes.
Best Regards,
Wasif
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Posted: 2023-07-03 09:29 AM . Last Modified: 2023-07-03 09:31 AM
Dear Wasif,
Thank you for a great answer!
The firmware in both CPU A and B is the same, V3.20
CPU A is in RUN mode, it has both PRIM and STBY LED on
CPU B is in RUN mode, it has both PRIM and STBY LED off
At my testing bench, I am using 4slot rack for CPU A and 8slot rack in CPU B but where the CPUs will be placed, it will have two 4slot racks. In my Control Expert program I have 4slot rack for both, I'm not sure if that matters. I also don't have all units connected to the rack in reality.
One rack includes power supply, M580 and NOS0300 the other rack includes only power supply and M580.
When I use the opperation screen in Control Expert, I get HSBY link error.
I have attached figures of the setup.
Best regards,
Grétar Már
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Posted: 2023-07-04 04:54 AM
Hi Gretar,
Thank you for updating the status and check my comment below:
It would be great if you share the snapshot of the M580 HSBY operator screen status while connecting live to the CPU.
One CPU must be in the Primary state and the other one should be in the standby state. The CPUs are not able to synch as per your shared snapshots. It seems like you are having the HSBY link error issue, I would suggest doing the following:
Additional request:
I hope the above comments will provide help to do the troubleshooting.
Best Regards,
Wasif
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