IOF_GetDeviceNetId 1:

Some IO devices can be assigned a TwinCAT network address during the configuration in the TwinCAT system (e.g. FC310x Profibus card or CP9030 card). The network address can then be used to execute firmware functions on the device. The IOF_GetDeviceNetId function block determines the network address, knowing the device ID. The device IDs are specified by the TwinCAT system during the configuration and cannot be configured by the user.


    NETID     : T_AmsNetId;
    START     : BOOL;

NETID: The network address of the TwinCAT computer on which the function is to be executed can be entered here (type: T_AmsNetID). If it is to be run on the local computer, an empty string can be entered.

DEVICEID: The ID of the device whose TwinCAT network address is to be read

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

TMOUT: States the length of the timeout that may not be exceeded during execution of the command.


    BUSY        : BOOL;
    ERR         : BOOL;
    ERRID       : UDINT;
    DeviceNetId : T_AmsNetId;

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

ERR: If an error should occur during the transfer of the command, then this output is set once the BUSY output was reset.

ERRID: Supplies the ADS error number when the ERR output is set.

DeviceNetId: The AmsNetId of the device as a string (type: T_AmsNetID).


Development environment

Target platform

IO hardware

PLC libraries to be integrated (category group)

TwinCAT v3.1.0

PC or CX (x86, x64, ARM)

All IO devices

Tc2_IoFunctions (IO)