F_VN_StartRelWatchdog

F_VN_StartRelWatchdog 1:

Starts a cooperative watchdog given a stop time relative to the current time.

Syntax

Definition:

FUNCTION F_VN_StartRelWatchdog : HRESULT
VAR_INPUT
    tStop  : DINT;
    hrPrev : HRESULT;
END_VAR

F_VN_StartRelWatchdog 2: Inputs

Name

Type

Description

tStop

DINT

Stop time in us

hrPrev

HRESULT

HRESULT indicating the result of previous operations (If SUCCEEDED(hrPrev) equals false, no operation is executed.)

F_VN_StartRelWatchdog 3: Return value

HRESULT

Further information

Further information can be found in the chapter Watchdogs.

F_VN_StartRelWatchdog 4:

tStop time exceeded

Note that the tStop time is slightly exceeded (by a few µs) when the watchdog is triggered.

Required License

TC3 Vision Base

System Requirements

Development environment

Target platform

PLC libraries to include

TwinCAT V3.1.4024.54 or later

PC or CX (x64) with PL50, e.g. Intel 4-core Atom CPU

Tc3_Vision