If you are looking at instantaneous values, check out the getsignal method of the xpc object. In other words,
This is an error in the Target Interfacing section of the Real-Time Workshop 6.5 (R2006b) documentation. The error reverses the order of the second and third optional arguments. The documentation should read as follows:
This issue is related to the compiler options provided to the Open Watcom 1.3 during compilation of the model source code.
The documenation has been updated for Release 2008b (R2008b). For previous product releases, read below: