FB_GetTimeZoneInformation 1:

This function block can be used to read the time zone settings of the operating system.


    sNetID   : T_AmsNetID;
    bExecute : BOOL;

sNetID: Here you can enter a string with the network address of the TwinCAT computer whose time zone settings are to be read (type: T_AmsNetID). If it is to be run on the local computer, an empty string can be entered.

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

tTimeout: States the length of the timeout that may not be exceeded by execution of the ADS command.


    bBusy  : BOOL;
    bError : BOOL;
    nErrId : UDINT;
    tzID   : E_TimeZoneID;
    tzInfo : ST_TimeZoneInformation;

bBusy: When the function block is activated this output is set. It remains set until a feedback is received.

bError: In the event of an error during the command transfer, this output is set once the bBusy output has been reset.

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

tzID: Additional summer/ winter time information (not always present) (type: E_TimeZoneID).

tzInfo: If successful this structure variable supplies the current time zone information of the operating system (type: ST_TimeZoneInformation).


See description of the FB_SetTimeZoneInformation function block.

Further functions and function blocks for time and time zone:


Development environment

Target platform

PLC libraries to be integrated (category group)

TwinCAT v3.1.0

PC or CX (WES7/Win7/Win10: TC RT x86/x64, WEC6/7: TC RT x86, WEC7: TC CE7 ARMV7)

Tc2_Utilities (System)