IOF_SER_GetPhase

IOF_SER_GetPhase 1:

The function block "IOF_SER_GetPhase" allows the current communication phase of the SERCOS ring to be determined. The communication phase can have a value from 0 to 4. Internally, an instance of the ADSREAD function block is called.

VAR_INPUT

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

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

DEVICEID: The DeviceId is used to specify the SERCOS master whose communication phase is to be determined. The device Ids are specified by the TwinCAT System Manager during the hardware configuration.

GET: 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;
    PHASE       : BYTE;
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.

PHASE: The current communication phase in the SERCOS ring.

Requirements

Development environment

Target system type

IO hardware

PLC libraries to include

TwinCAT v2.7.0

PC (i386)

Sercans SCS-P ISA; Sercans SCS-P PCI

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

TwinCAT v2.8.0

PC (i386)

Sercans SCS-P ISA; Sercans SCS-P PCI

TcIoFunctions.Lib

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