SetCommunicationMode

Set communication mode

This instruction sets the communication mode to “Program controlled” or to “MEWTOCOL-COM slave”/“MEWTOCOL-COM master/slave”, depending on the value at bSetProgramControlled:

TRUE: “Program controlled”
FALSE: “MEWTOCOL-COM slave”/“MEWTOCOL-COM master/slave”

Parameters

Input

Port (INT)

Specifies the communication ports depending on the PLC type:

COM port e.g. SYS_COM0_PORT
MCU/SCU e.g. 16#xx01 (xx = slot number) in COM01

bSetProgramControlled (BOOL)

Sets the communication mode:

TRUE: “Program controlled”
FALSE: “MEWTOCOL-COM slave”/“MEWTOCOL-COM master/slave”

Remarks

When the power is turned on, the communication mode selected in the system registers is set.
It is not possible to change to Modbus RTU mode or PLC Link mode during RUN mode.

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
		bSetMode: BOOL:=FALSE;
			(*If TRUE, communication mode is set to 'Program controlled'*)
	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 := 6 ;
        NETWORK_BODY
B(B_VARIN,,SYS_COM1_PORT,9,3,11,5,);
B(B_VARIN,,bSetMode,9,4,11,6,);
B(B_F,SetCommunicationMode!,,11,2,24,6,,?DPort?DbSetProgramControlled);
L(1,0,1,6);
        END_NETWORK_BODY
    END_NET_WORK
END_BODY

ST body

SetCommunicationMode(Port := SYS_COM1_PORT,
                bSetProgramControlled := bSetMode);