F159_MWRT_PARA

Set communication parameters in RUN mode

Communication parameters in the predefined DUT MCU_PARA_DUT are written to the specified port of a Multi-Communication Unit.

Parameters

Input

s_Para (MCU_PARA_DUT): Communication parameters defined in the predefined DUT
d_Port (WORD, INT, UINT): Specification of slot number (high byte) and port number (low byte) of the MCU to which the data is transmitted.

Remarks

To enable any settings made with the MCU Configurator, set DIP switches 3 and 4 of the MCU to ON for COM port 1. For COM port 2 set switches 7 and 8 to ON.

Error flags

sys_bIsOperationErrorHold (turns to TRUE and remains TRUE): if the MCU unit does not exist in the specified slot or zero bytes should be sent.
sys_bIsOperationErrorNonHold (turns to TRUE for one scan): if the MCU unit does not exist in the specified slot or zero bytes should be sent.

Example

POU header

All input and output variables used for programming this function have been declared in the POU header. The same POU header is used for all programming languages.

	VAR
		WriteCommunicationParameter: BOOL:=FALSE;
		McuPara: MCU_PARA_DUT;
	END_VAR

LD body

BODY
    WORKSPACE
        NETWORK_LIST_TYPE := NWTYPELD ;
        ACTIVE_NETWORK := 0 ;
    END_WORKSPACE
    NET_WORK
        NETWORK_TYPE := NWTYPELD ;
        NETWORK_LABEL :=  ;
        NETWORK_TITLE :=  ;
        NETWORK_HEIGHT := 7 ;
        NETWORK_BODY
B(B_VARIN,,WriteCommunicationParameter,15,3,17,5,);
B(B_COMMENT,,The communication parameter MCU_PARA are written to port 1 of the MCU in slot 2:,2,1,38,2,);
B(B_VARIN,,16#0201,15,5,17,7,);
B(B_VARIN,,McuPara,15,4,17,6,);
B(B_F,F159_MWRT_PARA!,,17,2,27,7,,?DEN?Ds_Para?Dd_Port?AENO);
L(1,0,1,7);
        END_NETWORK_BODY
    END_NET_WORK
END_BODY

ST body

(*The 10 bytes beginning with Data are sent from port 1 of the MCU in slot 2:*)
if WriteCommunicationParameter then
   F159_MWRT_PARA(s_Para := McuPara, d_Port := 16#0201);
end_if;