IOF_SER_GetPhase
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 ) |