Hello,
How can I associate multiple slaves to one master?
mySerialMaster : FbMbMasterSerial :=
( xConnect := TRUE,
udiBaudrate := 9600,
usiDataBits := 8,
eParity := WagoTypesCom.eTTYParity.Even,
eStopBits := WagoTypesCom.eTTYStopBits.One,
eHandshake := WagoTypesCom.eTTYHandshake.None,
ePhysical := WagoTypesCom.eTTYPhysicalLayer.RS485_HalfDuplex,
eFrameType := eMbFrameType.RTU,
tTimeOut := T#2000MS
);
utQuery : typMbQuery :=
( bUnitId := 1, // Slave address e43
bFunctionCode := 16#04, // read input registers
uiReadAddress := 50514, // Start address
uiReadQuantity := 10, // Quantity of wanted registers
uiWriteAddress := 0, // not needed for FC4
uiWriteQuantity := 0, // not needed for FC4
awWriteData := [124(0)] // not needed for FC4
);
utQuery2 : typMbQuery :=
( bUnitId := 10, // Slave address e33
bFunctionCode := 16#04, // read input registers
uiReadAddress := 50514, // Start address
uiReadQuantity := 10, // Quantity of wanted registers
uiWriteAddress := 0, // not needed for FC4
uiWriteQuantity := 0, // not needed for FC4
awWriteData := [124(0)] // not needed for FC4
);
utQuery3 : typMbQuery :=
( bUnitId := 21, // Slave address e34
bFunctionCode := 16#04, // read input registers
uiReadAddress := 50514, // Start address
uiReadQuantity := 10, // Quantity of wanted registers
uiWriteAddress := 0, // not needed for FC4
uiWriteQuantity := 0, // not needed for FC4
awWriteData := [124(0)] // not needed for FC4
);
xTxTrigger : BOOL; (* Set this variable once to start a job.
This variable will be automatically reset by the master
when the job is completed.
*)
utResponse : typMbResponse; (* After the job is completed, you can find the result
in this structure.
*)
tonDelay : TON := (PT := T#20MS); // This is the silence time between two requests
//— delay between two requests ----------------------
tonDelay( IN := (NOT tonDelay.Q) AND (NOT xTxTrigger));
//xTxTrigger S= tonDelay.Q; // trigger the next request
//— call cyclic the master --------------
mySerialMaster( I_Port := myserialport, // my serial port
utQuery := utQuery,
xTrigger := xTxTrigger,
utResponse := utResponse
);
I would like to associate the 3 slaves: utQuery, utQuery2, utQuery3 with the master mySerialMaster
Thank you for your help