ItpEnableDefaultGCode

The function block ItpEnableDefaultGCode enables execution of a user-defined G-Code before the start of each NC program from the PLC. The default program is executed before the loaded program when the actual NC program starts.

This function block enables rotation of the coordinate system for all NC programs to be executed, for example.

The standard G-Code must be stored as “DefaultGCode<Channel-Number>.def” in the TwinCAT\Mc\Nci directory.

VAR_INPUT

VAR_INPUT
    bExecute            : BOOL;
    bUseDefaultGCode    : BOOL;
    tTimeOut            : TIME;
END_VAR

bExecute: The command is triggered by a rising edge at this input.

bUseDefaultGCode: If this variable is TRUE, the default G-Code is activated through a rising edge at bExecute. If the variable is FALSE, the default G-Code is deactivated.

tTimeOut: ADS Timeout-Delay

VAR_IN_OUT

VAR_IN_OUT
    sNciToPlc           : NCTOPLC_NCICHANNEL_REF;
END_VAR

sNciToPlc: The structure of the cyclic channel interface from the NCI to the PLC. This structure is only accessed for reading. (type: NCTOPLC_NCICHANNEL_REF)

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).

	Not Available for GST This function block is not available if the GST interpreter is employed.

Requirements

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