IOF_GetDeviceIDByName

IOF_GetDeviceIDByName 1:

The IOF_GetDeviceIDByName function block determines the device ID of an IO device, knowing the device name. When successful, the function block returns the device ID specified by the TwinCAT system during the configuration. The device IDs cannot be configured by the user.

VAR_INPUT

VAR_INPUT
    NETID      : T_AmsNetId;
    DEVICENAME : T_MaxString;
    START      : BOOL;
    TMOUT      : TIME := DEFAULT_ADS_TIMEOUT;
END_VAR

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.

DEVICENAME: The device name of an IO device (type: T_MaxString).

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.

VAR_OUTPUT

VAR_OUTPUT
    BUSY     : BOOL;
    ERR      : BOOL;
    ERRID    : UDINT;
    DEVICEID : UDINT;
END_VAR

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.

DEVICEID: The device ID of an I/O device.

Requirements

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)