mbusDataReceive (Function)

This function is used to receive data from a wireless M-Bus slave

The slave information can be read with mbusRecordSlaveInfo.

The meter data can then be read using mbusRecordGetInfo.

Input:

handle : SYSHANDLE

A handle to the connection

timeout : INT default 0

Number of seconds to wait for data from Wireless M-Bus. Use 0 seconds to return immediately if there is no data in the buffer.

filter : STRING

Specifies the address or address filter to receive frames from. If not specified, it will just receive the first frame in the buffer.

Returns: INT

Declaration:

FUNCTION mbusDataReceive : INT;
VAR_INPUT
   handle   : SYSHANDLE;
   timeout  : INT := 0;
   filter   : STRING;
END_VAR;

Example:

INCLUDE rtcu.inc
 
PROGRAM test;
VAR
   mb   : SYSHANDLE;
   rc   : INT;
   info : mbusRecordSlaveInfo;
END_VAR;
 
   ...
   // Open wireless M-Bus interface in T1+C mode
   rc := mbusOpen(type:=2, handle:=mb, mode:=_MBUS_MODE_T1_C);
   DebugFmt(message:="mbusOpen(): \1", v1:=rc);
   ...
BEGIN
   // Wait for 15 seconds for data from 1234567893153303
   rc := mbusDataReceive(handle:=mb, filter:="1234567893153303", timeout:=15);
   DebugFmt(message:="mbusDataReceive: \1", v1:=rc);
 
   IF rc = 1 THEN
      info(handle:=mb);   
      IF info.ready THEN
         DebugFmt(message:="Info for \4:", v4:=info.id);
         DebugFmt(message:=" Enc:  \1", v1:=info.enc_state);
         DebugFmt(message:=" Man:  "+info.manufacturer);
         DebugFmt(message:=" Ver:  \1", v1:=info.version);
         DebugFmt(message:=" Med:  \1", v1:=info.medium);
         DebugFmt(message:=" AN :  \1", v1:=info.accessnumber);
         DebugFmt(message:=" Sta:  \1", v1:=info.status);
         DebugFmt(message:=" Addr: "+info.sec_addr);
         DebugFmt(message:=" Sig:  \1", v1:=info.signal);
      END_IF;
      ...
   END_IF;
   
   ...
END;
END_PROGRAM;