IOF_GetDeviceNetId

IOF_GetDeviceNetId 1:

Some I/O devices can be assigned an AmsNetId during the configuration in the TwinCAT System Manager (e.g. the FC310x Profibus card or the CP9030 card). The AmsNetId can then be used to execute firmware functions on the device. The function block IOF_GetDeviceNetId can be used to determine the AmsNetId by means of the device ID (DEVICEID). The device IDs are specified during configuration by the TwinCAT System Manager, and can not be configured by the user. Internally to the function block an instance of the ADSREAD function block is called.

VAR_INPUT

VAR_INPUT
    NETID       : T_AmsNetId;
    DEVICEID    : UDINT;
    START       : BOOL;
    TMOUT       : TIME;
END_VAR

NETID: It is possible here to provide the AmsNetId of the TwinCAT computer on which the function to be executed. If it is to be run on the local computer, an empty string can be entered.

DEVICEID: The ID of the device whose AmsNetId is to be read

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

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

VAR_OUTPUT

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

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

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

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

DeviceNetId: The AmsNetId of the device as a string

Requirements

Development environment

Target system type

IO hardware

PLC libraries to include

TwinCAT v2.7.0

PC (i386)

All IO devices with NetID

Standard.Lib; PLCSystem.Lib; TcPLCAds.Lib; TcPlcIoFunctions.Lib

TwinCAT v2.8.0

PC (i386)

All IO devices with NetID

TcIoFunctions.Lib

( Standard.Lib; TcBase.Lib; TcSystem.Lib; TcUtilities.Lib are included automatically )