master:shiftreg parametersPSCAD Serial-In/Serial-Out Shift Register

Every parameter of the PSCAD Serial-In/Serial-Out Shift Register (master:shiftreg): 12 names, with the unit, the default and the meaning PSCAD gives each one. Copy a name into parameters().

What master:shiftreg is

Serial-In/Serial-Out Shift Register (Interpolated Serial-In/Serial-Out Shift Register), a component of PSCAD's Master Library, filed under control blocks.

Definition
master:shiftreg
PSCAD name
Serial-In/Serial-Out Shift Register
Category
Control blocks
Parameters
12, in 2 groups
Read from
PSCAD 5.0.0, 2026-11-07

Read and write master:shiftreg 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 workspace

for comp in project.find_all("master:shiftreg"):   # the exact definition, namespace first
    params = comp.parameters()           # every parameter, as PSCAD holds it
    print(str(params["Clock"]))          # Active Clock Edge

comp = project.find_all("master:shiftreg")[0]
comp.parameters(Clock="POSITIVE")        # a Choice is written as its symbol
  • 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, "Clock") and px_set(...), which also records the old value so the case is put back at the end. Getting started shows them.

Configuration

ParameterUnitDefaultDescription
ClockChoice·NEGATIVEActive Clock EdgeSelect Positive or Negative edgeWritten as NEGATIVE (Negative [1->0]), POSITIVE (Positive [0->1])
INTRChoice·DISABLEDInterpolation CompatibilitySelect Enabled or DisabledWritten as DISABLED (Disabled), ENABLED (Enabled)
NChoice·2Number of BitsSelect between 2 and 8Written as 2 = 2, 3 = 3, 4 = 4, 5 = 5, 6 = 6, 7 = 7, 8 = 8
NameText··Name for IdentificationEnter a name for identification

Initializations

ParameterUnitDefaultDescription
Q1Choice·LOW_0Initial State of Output 1Written as LOW_0 (Low [0]), HIGH_1 (High [1])
Q2Choice·LOW_0Initial State of Output 2Written as LOW_0 (Low [0]), HIGH_1 (High [1])
Q3Choice·LOW_0Initial State of Output 3Written as LOW_0 (Low [0]), HIGH_1 (High [1])Used when N>2
Q4Choice·LOW_0Initial State of Output 4Written as LOW_0 (Low [0]), HIGH_1 (High [1])Used when N>3
Q5Choice·LOW_0Initial State of Output 5Written as LOW_0 (Low [0]), HIGH_1 (High [1])Used when N>4
Q6Choice·LOW_0Initial State of Output 6Written as LOW_0 (Low [0]), HIGH_1 (High [1])Used when N>5
Q7Choice·LOW_0Initial State of Output 7Written as LOW_0 (Low [0]), HIGH_1 (High [1])Used when N>6
Q8Choice·LOW_0Initial State of Output 8Written as LOW_0 (Low [0]), HIGH_1 (High [1])Used when N>7

Related

← master:Sequencer_Wait Sequencer: Wait for an event · master:sign Sign Function →