master:trans_fcn parametersPSCAD Nth Order Transfer Function
Every parameter of the PSCAD Nth Order Transfer Function (master:trans_fcn): 37 names, with the unit, the default and the meaning PSCAD gives each one. Copy a name into parameters().
What master:trans_fcn is
Nth Order Transfer Function, a component of PSCAD's Master Library, filed under control blocks.
Definition
master:trans_fcn
PSCAD name
Nth Order Transfer Function
Category
Control blocks
Parameters
37, in 5 groups; 1 carry a unit
Read from
PSCAD 5.0.0, 2026-11-07
Read and write master:trans_fcn in Python
import mhi.pscad
pscad = mhi.pscad.connect() # the PSCAD that is open; launch() starts one
project = pscad.project("my_case") # a case loaded in the workspacefor comp in project.find_all("master:trans_fcn"): # the exact definition, namespace first
params = comp.parameters() # every parameter, as PSCAD holds itprint(str(params["FBase"])) # Frequency Scaled to 1 rad/s:, in Hz
comp = project.find_all("master:trans_fcn")[0]
comp.parameters(FBase="2 [Hz]") # a value that carries a unit is written with it
A parameter is named exactly as in the table, letter case included: parameters() gives every one of them in a dictionary, and a name the component does not have is refused.
A value that carries a unit comes back as a number whose unit is only in its text, so read it as text first (str(...)) or the unit is lost. PSCAD keeps a written unit as it is given: "2500 [mohm]" stays in mohm.
A Choice is read and written as its symbol (the capitals in "Written as"), not as the words PSCAD shows in the dialog.
find_all() takes the exact definition only. A wildcard or a bare name without master: comes back empty; the Builder's px_find walks the pages for those.
The Builder's runtime does the same with the unit handled for you: px_get(comp, "FBase") and px_set(...), which also records the old value so the case is put back at the end. Getting started shows them.