mbusSlaveConfigBaud (Function)

This function is used to change the baud rate of a wired M-Bus slave.

Input:

handle : SYSHANDLE

A handle to the connection

baud : DINT (300,600,1200,2400,4800,9600,19200,38400)

The new baud rate to use.

pri_addr : INT default -1

The primary address for the slave to configure. Use -1 to use the secondary address instead.

sec_addr : STRING

The secondary address for the slave to configure. Used if the primary address is  -1.

Returns: INT

Declaration:

FUNCTION mbusSlaveConfigBaud : INT;
VAR_INPUT
  handle   : SYSHANDLE;
  baud     : DINT;
  pri_addr : INT := -1;
  sec_addr : STRING;
END_VAR;

Example:

INCLUDE rtcu.inc
 
PROGRAM test;
VAR
  mb : SYSHANDLE;
  rc : INT;
END_VAR;
 
BEGIN
  ...
  // Open wired M-Bus interface @2400 baud
  rc := mbusOpen(handle := mb);
  ...
  // Change baud on device with primary address 11 to 9600 baud
  rc := mbusSlaveConfigBaud(handle:=mb, pri_addr:=11, baud:=9600);
  ...
  // Change speed to 9600 baud to be able to communicate with the device
  rc := mbusBaudSet(handle := mb, baud := 9600);
  ...
END;
END_PROGRAM;