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Knowledge base » Software reference » Core state

Core state

By  Benoît Steinmann Updated on SD026

Table of Contents

The Core state block returns the state of the target:

  • 0 = FAULT: The target received an error signal and waits for a user acknowledgment to switch back to BLOCKED state (PWM disabled)
  • 1 = BLOCKED: PWM disabled, the target waits for the enable command to switch to OPERATING and activate its PWM outputs.
  • 2 = OPERATING: The PWM outputs are enabled.

The block also provides a second signal called “reset” that can be wired to the external reset input of PID controllers to keep the integrator at reset when the target is not in OPERATING state.

Signal specification

  • The first output port returns the core state of the B-Box/B-Board. (0=FAULT, 1=BLOCKED, 2=OPERATING)
    In simulation the output port s always returns the value 2 (OPERATING).
  • The second output port r provides the reset signal.
    reset = 1 when s=FAULT or s=BLOCKED
    reset= 0 when s=OPERATING
    In simulation, the reset output port always returns the value 0

PLECS block

Signal specification

  • The output port s returns the core state of the B-Box/B-Board. (0=FAULT, 1=BLOCKED, 2=OPERATING)
    In simulation the output port s always returns the value 2 (OPERATING).
  • The second output port provides the reset signal.
    reset = 1 when s=FAULT or s=BLOCKED
    reset= 0 when s=OPERATING
    In simulation, the reset output port always returns the value 0

C++ functions

tCoreState GetCoreState();Code language: C++ (cpp)

This function returns the current state of the core.

Return value

  • tCoreState: Current state of the core. The following states can be returned
typedef enum {
    FAULT = 0,
    BLOCKED = 1,
    OPERATING = 2
} tCoreState;Code language: C++ (cpp)

int reset = (GetCoreState() < 2)Code language: C++ (cpp)

This code snippet shows how a reset signal can be created.

Return value

  • 0: Reset not activated. This value is returned when the state is OPERATING
  • 1: Reset activated. This value is returned when the state is not OPERATING

Benoit is an embedded systems expert and the leader of software and firmware developments at imperix. On the knowledge base, he is the author of numerous software reference documents.

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