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Modbus function code 91

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I need information about TCP/IP Modbus together with Function code 91 protocol or SEMI E54 communication protocol.
I have already searched on internet but found almost noting.
I need only the read function.
How is the command build-up that is must send to my equipment.
How is build-up the response that I receive back from my equipment.
hopefully you can help me out.

best regards,
asked Apr 24, 2018 in Modbus and Industrial Automation by enschot New to the Community (0 points)

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1 Answer

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You won't find any 'standard' docs on a function 91, because anything about 64 is 'vendor specific'. Ultimately, the vendor selling the product needs to provide details.
answered Jul 18, 2018 by Coralyn Seasoned Professional (157 points)