PID behavior

[Felipe Sagui]

We are using the PID advanced .VI (we tried to use the standard PID too) but we are not understanding the behavior of the PID.

We think that a correct PID starts with the maximum on the output (on maximum output range), because the error is bigger, and while the error decreases, the process variable increases and the output signal should to decrease until 0. In the end the set-point = process variable, error = 0 and output = 0.

However the PID on LabView makes the inverse: when the error is maximum the output starts on 0 and is increasing until the maximum output range with the process variable while the error is decreasing until 0.

is this behavior right?