Remote I/O Based on BRC-300 (BRC-RIO)

We have remote I/O configuration which is done with BRC300 controllers over H-Net, there are redundant controllers in local side panel and also in remote side. I want to download new configuration in the controllers, as per my understanding both side controller have same running configuration. Before doing this activity i need some clarifications.

1- While downloading new configuration in the local side controller, will it be automatically downloaded to remote side controller or do i need to initialize the remote side ?
2-If remote side controller initialization required, when to initialize it?

Thanks,

Abdul Ghaffar

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Abdul Ghaffar Rank: 3341

Asked 1 year ago

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Hi Abdul,
The remote BRCs acting as RIO processors do not need to be touched during an online change. The FC146 in the local BRCs will manage any configuration changes to the connected RIO IO module configuration. When set up as RIO processors, the remote BRCs are not really behaving as BRCs, executing only the function codes connected to the FC146 in the local BRC.
The remote BRC300s do not need to be initialised as a normal part of an online configuration. The only time the remote BRCs need to be initialised is probably after a firmware upgrade.
There is a good explanation of how the BRC RIO works and what happens during an online change in appendix D of your BRC manual (2VAA001821 for BRC300/BRC400).

Regards,
Alan

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by Abdul Ghaffar Rank: 3341 on 9/19/2019 10:48:40 PM | Like (0) | Report

Thanks Alan for important information & reference document.

by Abdul Ghaffar Rank: 3341 on 10/12/2019 2:29:50 AM | Like (0) | Report

Hi Alan,
Today I made some changes to a CLD in Composer, and compile returns without warnings or errors. When I did "Online configuration in RIO local BRC300" everything works fine until its time to "Test" the new configuration, the test starts fine but after a short while I receive an error saying "Fail testing new configuration - (GoBack to get out off error mode)", and when I click GoBack I get a "Online Configuration Fatal Error" saying to check the status of the controller e.t.c. before attempting to do a Online config again. I have checked the controller and it seems to be working fine. Initialized both local BRCs one by one and performed changeover test, everything found normal. I did online configuration on other BRCs which are without remote I/O, it works fine.
Can you please guide me how to solve this issue?

by Alan Rank: 20 on 10/12/2019 4:23:35 PM | Like (0) | Report

Hi,
You didn't indicate what sort of change you were making, so some basic fault finding first.
Questions
Did you look at the LEDs or perform a status report on the failed controller? Did the status report indicate a block that caused the fault?
Can you make a trivial change to the controller pair with the RIO that is not related to RIO? I.E. Change a non-tunable spec on a spare block. If so the controller online change function is working OK.
Can you make a trivial change to the controller pair with the RIO that is related to RIO logic? I.E. Change a non-tunable spec on a RIO module configuration. If so the controller online change function is working OK for the RIO logic.

Comments
If trivial changes don't work maybe check that the firmware of the local BRC and the remote BRC (RSP) are the same. All BRC controllers and RIO22 modules communicating on the same HNET must have the same firmware revision for proper operation,

For BRC300/400/410 and RIO there are configuration rules that are strictly enforced..

FC146 must be at a lower block number than the FC147.
FC147 must be at a lower block number than the associated I/O function codes connected to it.
The FC146, FC147, and all I/O function codes associated to that RIO must be in the same configuration logic segment as defined by the segment control block FC82.

Failure to follow this requirement will result in the following error indications:
- The BRC will go into error mode rather than execute.
- Status byte 3 will report error 06. Status bytes 4 and 5 will point to the block address of the FC146.
- Error LEDs 2 and 3 will be on red and the status LED will be flashing green.

Secondly, as per 3BUA002586R0001, ADAPT blocks do not work with the IO function codes attached to a RIO22 or BRC300/400/410 configured as an RSP. I.E. ADAPTs don't work when used to set tunable specs on RSP connected IO modules. I have never tried this so don't know how the controller behaves if this is attempted.
Good luck,
Alan

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Alan Rank: 20

Answered 1 year ago

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Remote I/O Based on BRC-300 (BRC-RIO)

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