ItpStartStop

	Outdated version The sole purpose of the function block is to ensure compatibility with existing projects. For new projects please use the function block ItpStartStopEx.

Interface

VAR_INPUT
    bStart         : BOOL;
    bStop          : BOOL;
    nChnId         : UDINT;
    tTimeOut       : TIME;
END_VAR

bStart: A positive edge starts the NC channel

bStop: A positive edge stops the NC channel. A stop command deletes all the tables in the NC and brings the axes to a controlled halt.

nChnId: Channel ID

tTimeOut: ADS Timeout-Delay

NOTE! The bStop input has a higher priority than the bStart input, so that if both inputs receive a positive edge, a channel stop will be executed.

VAR_OUTPUT

VAR_OUTPUT
    bBusy     : BOOL;
    bErr      : BOOL;
    nErrId    : UDINT;
END_VAR

bBusy: This output remains TRUE until the function block has executed a command, but at the longest for the duration supplied to the 'Timeout' input. While Busy = TRUE, no new command will be accepted at the inputs. Please note that it is not the execution of the service but its acceptance whose time is monitored.

bErr: This output is switched to TRUE as soon as an error occurs during the execution of a command. The command-specific error code is contained in ‘nErrId’. Is reset to FALSE by the execution of a command at the inputs.

nErrId: Contains the command-specific error code of the most recently executed command. Is reset to 0 by the execution of a command at the inputs. The error numbers in ErrId can be looked up in the ADS error documentation or in the NC error documentation (error codes above 0x4000).

Requirements

Development environment	Target platform	PLC libraries to be linked
TwinCAT v3.1.0	PC or CX (x86 or x64)	Tc2_NCI