module fb

Standard library. This module holds function blocks defined by the PLC programming norm DIN EN 61131-3. They can be imported and used in a PLC program.

• CTU: up-counter
• CTD: down-counter
• CTUD: up- and down-counter
• TP: impulse giver
• TON: switch-on-timer
• TOF: switch-off-timer
• RS: RS latch
• SR: SR latch
• R_TRIG: trigger on rising flank
• F_TRIG: trigger on falling flank

class FB

Generic superclass for a function block.

method __init__

__init__()

Configure any initial settings.

class CTU

An up-counter function block.

method __init__

__init__(pv: int = 0)

pv: when this limit is reached by cv, q is set to True (default 0)

class CTD

A down-counter function block.

method __init__

__init__(pv: int = 0)

pv: if a rising edge is registered for ld, cv is set to this value (default 0)

class CTUD

An up- and down-counter function block.

method __init__

__init__(pv: int = 0)

pv: when this limit is reached by cv, q is set to True

class TP

Create an impulse.

method __init__

__init__(pt: float = 0.0)

pt: the impulse time

class TON

Create a delay in switching on.

method __init__

__init__(pt: float = 0.0)

pt: the delay time

class TOF

Create a delay in switching off.

method __init__

__init__(pt: float = 0.0)

pt: the delay time

class RS

A RS latch (reset dominance).

method __init__

__init__()

class SR

A SR latch (set dominance).

method __init__

__init__()

class R_TRIG

Trigger on a rising flank.

method __init__

__init__()

class F_TRIG

Trigger on a falling flank.

method __init__

__init__()

This file was automatically generated via lazydocs.