MODBUS TCP

[Sannin 0]

Hello everyone, I have a little problem that will surely be nonsense for you. I have to transmit in modbus tcp with WORD array of the temperatures converted from REAL. The problem is that when they are converted to WORD arrays they lose decimals. How can I do to transmit them also with decimals? Thank you

 

Edited 3 Nov 2022 by Sannin

[pturmel 157]

Words are integers, so have no decimal, by definition.  The most common way to address this is simply to multiply by ten or one hundred, and transmit with an implicit one or two decimal places.  (Multiply before converting to integer.)

[Sannin 0]

53 minutes ago, pturmel said:

Words are integers, so have no decimal, by definition.  The most common way to address this is simply to multiply by ten or one hundred, and transmit with an implicit one or two decimal places.  (Multiply before converting to integer.)

Thank you very much, a very simple solution that I hadn't thought of, thank you very much.

[photovoltaic 120]

1 hour ago, Sannin said:

Thank you very much, a very simple solution that I hadn't thought of, thank you very much.

If the device you are sending these to can't recombine the words then divide then this method won't work. You may need to use copyRealToDword and then split the DWORD into 2 words.