I'm working in a SCADA system with Modbus protocol. It offers me these data types and I don't know what's the difference between them. Could anyone please clarify?
What is the difference between Float32, Float32LE and Float32MLE?
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Float32or sometimesFloat32BEis the default representation of a float value by using big endian. For a float with 32 bits (which is typically encoded by using the IEEE 754 standard) we need 4 bytes which leads to the following memory layout:Byte 1,Byte 2,Byte 3,Byte 4orABCD(to use a more common and readable example with 4 different characters).Float32LEstands for little endian and is represented in the following memory layout:Byte 4,Byte 3,Byte 2,Byte 1orDCBAFloat32MLEstands for mid-little-endian and is represented in the following memory layout:Byte 3,Byte 4,Byte 1,Byte 2orCDABTo complete the list of possibilities you can also find something called
Float32MBEwhich is mid-big-endian and represented in the following memory layout:Byte 2,Byte 1,Byte 3,Byte 4orBACD