Function Blocks PSx-3__-PN
30
(View in Step 7 TIA V13 + V14)
The following items have to be considered when using this FB:
Each value has to be written and the values have to have a reasonable relation to each
other. Each value is processed, after that the following parameters are written in the
order stated below:
- Direction of rotation (Par. 37) = Direction
- Position scaling, numerator (Par. 38) = 400
- Position scaling, denominator (Par. 39) = StepsPerTurn
- Actual value (Par. 3) = SetPoint
- If (SetPoint > UpperLimit):
Upper mapping end (Par. 41) = Se (3 x StepsPerTurn)
sonst:
Upper mapping end (Par. 41) = Uppe (3 x StepsPerTurn)
- Upper limit (Par. 42) = UpperLimit
- Lower limit (Par. 43) = LowerLimit
The number of steps per revolution “StepsPerTurn” directly results in the value of the
parameter “Position scaling, denominator” (Par. 39). Thereby it is assumed that the
value of “Position scaling, numerator” (Par. 38) is in delivery state, thus 400.
Before writing the parameters, the entered values are checked for validity.
Subsequently the conditions and error codes which are displayed if a condition is not
satisfied.
