FB_CheckLicense

	If you use OEM licenses make sure you encrypt your boot project! Remember that the license ID queried via FB_CheckLicense in the binary code can easily be found and (with a little effort) manipulated with a hex editor. Therefore, be sure to encrypt your boot project (safest), or at least disguise the queried license ID in the source code as best as possible.

The function block FB_CheckLicense determines the TwinCAT 3 license status for a given license ID.

VAR_INPUT

VAR_INPUT
    bExecute    : BOOL;
    tTimeout    : TIME;
    sNetId      : T_AmsNetId;
    stLicenseId : GUID;
END_VAR

bExecute: The function block is activated by a positive edge at this input.

tTimeout: Timeout time that must not be exceeded when the command is executed.

sNetId: AmsNetId (AMS network identifier) of the TwinCAT computer whose license status is to be read (type: T_AmsNetId). If it is to be run on the local computer, an empty string can be entered.

stLicenseId: License ID (type: GUID)

VAR_OUTPUT

VAR_OUTPUT
    bBusy          : BOOL;
    bError         : BOOL;
    nErrorId       : UDINT;
    stCheckLicense : ST_CheckLicense
END_VAR

bBusy: TRUE, as long as the function block is active.

bError: TRUE if an error occurs during command execution.

nErrorId: Supplies the ADS error number when the bError output is set.

stCheckLicense: Structure with license data (type: ST_CheckLicense)

Requirements

Development environment	Target platform	PLC libraries to include
TwinCAT v3.1.4022	PC or CX (x64, x86)	Tc2_Utilties >= 3.3.24.0