Acromag’s 963PB data is formatted as 16bit signed integers and will read 0 to 20,000 counts proportional to the range you are set on (ie; 0-20mA or 4-20mA typically). The word data is formatted as “little endian”. If you suspect your system is byte swapping, some configuration tools allow you to easily reverse the word data format. Otherwise, please see below for more information.
To tell if your data is being byte swapped “big endian”, look at your channel value data.
If the Least Significant bits are changing rapidly from the 9th bit to 16bit then the Least Significant byte is in the Upper Byte of the word (ie; big endian).
If the Least Significant bits are changing rapidly at the 1st to 8th bit then the Least Significant byte is in the lower byte of the word (ie; little endian).
To fix the big-endian on the Wago IPC 758 870, try using the ROR (Rotate Right) which would move the High-Byte up and the low-byte down.
You could also contact Wago technical support for additional help.