jgebhardt said:...They are very particular in the entertainment industry and they expect them all to match...
Fair enough on the reason for wanting them all the same, but just to note, at the end of the day both Series A and B of these particular modules will do the same thing. Having one Series A in the mix should not interfere with the core functionality of the system.
jgebhardt said:...the rest are series B and most likely the spares would be as well...when they go to swap it out the module is faulted because it doesn't match the series and firmware revision in the program...
This is because you probably have the Electronic Keying for all the module AOP instances set to Exact Match for Series B Firmware Revision 2.0. If set to Compatible Module then the module will not fault when replacing a Series A with a Series B.
Note: For Electronic Keying using Compatible Module the Series (Hardware) of the modules does not matter. Only the Firmware Revision is compared. A module of one Firmware Revision can be replaced with a module of the same or higher Firmware Revision. A Series B module will naturally have a higher Firmware Revision than a Series A module, but the Series is not checked here, only the Firmware Revision.
As this is a 1734-IB8S, it is a Safety module. They, you, others, anyone might automatically assume that a Safety application would dictate that you must use Exact Match for Electronic Keying, but this is not so.
There is no stipulation that you must use Exact Match for Safety applications. However, for Safety or Standard applications, in general it is advised to use Exact Match where you can. Failing that you can use Compatible Module.
This would allow them to continue to use the Series A module in with the Series B modules and easily swap it out for a Series B should the need ever arise.
But something tells me that that still will not sit too well with their "very particular" selves?
..."A Series A in with the B's!?"..."Compatible Module instead of Exact Match!?"..."Who do you think you are dealing with here!?"...
At the end of the day, and for the sake of one module, it would probably be best to just swap it out for a Series B module and keep everyone happy, now, and in the future.
Regards,
George
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