Post by eschwellinger on Ethernet/IP Scanner Exception
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Which plc is this - seems that the performance of this device is not enough. You could check the plcload in the plcshell by 'plcload'
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Post by garrian on How to write multiple coils (Modbus FC15)
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Thanks for your reply. I belive it is contiguous, I'm writing to adress 0 to 4. Or, do you mean something else? Well, something is happening. If I on the client set adress 1,2,3 to true, only 1 is set to true on the server side. On the client side, the data is array of word. But on the server side, the coils are array of bool. Holding register is array of word on server side. Can this be a problem? Attached screenshot of how it looks at the server side.
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How to write multiple coils (Modbus FC15)
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How to write multiple coils (Modbus FC15)
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Discussions about the CODESYS Development System, IEC programming, CODESYS Professional Developer Edition
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Post by ben1 on How to write multiple coils (Modbus FC15)
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If I am understanding what you are saying, then yes that would be your problem. I would create an array of bools on the client side for the transfer and try that. Or if client can't be changed then use words on server and unpack. But I am not sure if you or I are mis interpreting but it sounds a bit jumbled. I don't know what you have control of, but, if you are turning on BITS in the server, you should write to BITS in the client with a Function 15. If you are writing to WORDS in the server, you should write to WORDS in the client with a Function 16.
Last updated: 8 minutes ago
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