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LREAL from four WORDs? ^{CODESYS Forge talk (Thread)}
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Modbus TCP slave with PFC100 How to define reading words ^{CODESYS Forge talk (Thread)}
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doubt with modbus to read 32-bit words ^{CODESYS Forge talk (Thread)}
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DWORD mit Array of BOOL überlagern?
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DWORD auf Modbusadresse(n) zuweisen ^{CODESYS Forge talk (Thread)}
DWORD auf Modbusadresse(n) zuweisen
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Baustein zur Ausgabe eines DWORD
Last updated: 2014-03-07

SysTime64, shifting between DWORD ^{CODESYS Forge talk (Thread)}
SysTime64, shifting between DWORD
Last updated: 2009-03-19

Bytes und Words..in..codesys..muss ich das verstehn? ^{CODESYS Forge talk (Thread)}
Bytes und Words..in..codesys..muss ich das verstehn?
Last updated: 2010-06-12

Fehler 4010: "Kann REAL nicht in DWORD konvertieren" ?????? ^{CODESYS Forge talk (Thread)}
Fehler 4010: "Kann REAL nicht in DWORD konvertieren" ??????
Last updated: 2012-03-01

Is DWORD considered signed or unsigned? ^{CODESYS Forge talk (Thread)}
Is DWORD considered signed or unsigned?
Last updated: 2017-07-26

Post by ben1 on How to write multiple coils (Modbus FC15) ^{CODESYS Forge talk (Post)}
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: 2024-11-17

Post by garrian on How to write multiple coils (Modbus FC15) ^{CODESYS Forge talk (Post)}
Thanks! As far as I can see, the client can only send words. And on the server side there are an array for each of the functions: bool for coil and discrete, word for holding and input registers. I assume I can use holding register, then use bit mapping on the words instead of coils. But I really want to use the FC15/coils.
Last updated: 2024-11-17

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