ItpLoadProg

Interface

VAR_INPUT
    bExecute       : BOOL;
    nChnId         : UDINT;
    sPrg           : STRING;
    nLength        : UDINT;
    tTimeOut       : TIME;
END_VAR

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

Description

On a rising edge at the bExecute input, the function block loads the NC program whose name is given at the sPrg input. The string length of the program name is applied to the input nLength. nChnId is the ID of the associated NC channel.

The NC program is sought in the “TwinCAT\cnc” directory if no other information is provided. It is however also possible to give an absolute path.

The bBusy output remains TRUE until the function block has executed a command, although only for as long as the time specified at the tTimeOut input. While bBusy = TRUE no new command is accepted at the inputs.
The output bErr is switched to TRUE if an error occurred during the execution of the command. The command-specific error code is contained in nErrId. The outputs are reset by carrying out a command at the inputs.

Requirements