FB_MBUS_General_Send

The function block FB_MBUS_General_Send is used to send data to any M-Bus devices (the primary address of the meter can be changed with this function block, for example).

The function block can only be executed together with the function block FB_MBUSKL6781().

	Further information See Operating principle of the function block

Inputs

VAR_INPUT
  usiAddress  : USINT;
  stSecAdr    : ST_MBUS_SecAdr;
  eBaudrate   : E_MBUS_Baudrate := eMBUS_Baud2400;
  bStart      : BOOL;
  bSND_NKE    : BOOL := TRUE;
  bDisabled   : BOOL := FALSE;
  byC_Field   : USINT := 16#53;
  byCI_Field  : USINT := 16#51;
  arrData     : ARRAY [0..240] OF BYTE;
END_VAR

Name	Type	Description
usiAddress	USINT	Primary address of the meter to be read with this function block.
stSecAdr	ST_MBUS_SecAdr	Secondary address of the meter to be read with this function block.
eBaudrate	E_MBUS_Baudrate	300, 600, 1200, 2400, 4800, 9600 baud
bStart	BOOL	All meters are read once on the positive edge of this input.
bSND_NKE	BOOL	TRUE initializes the meter for each read operation and sets the meter to the first telegram (SND_NKE).
bDisabled	BOOL	TRUE = deselection of the function block
byC_Field	USINT	C-field / function field
byCI_Field	USINT	CI-field / ID field
arrData	ARRAY OF BYTE	The data to be sent must be written to this variable (see long block).

Inputs/outputs

VAR_IN_OUT
  stCom : ST_MBUS_Communication;
END_VAR

Name	Type	Description
stCom	ST_MBUS_Communication	This structure is used to link the function block FB_MBUSKL6781() with the meter blocks.

Outputs

VAR_OUTPUT
  bBusy   : BOOL;
  bReady  : BOOL;
  bError  : BOOL;
  eError  : E_MBUS_ERROR;
END_VAR

Name	Type	Description
bBusy	BOOL	The bBusy output is TRUE as long as the meter is being read.
bReady	BOOL	The bReady output is TRUE for one cycle, once meter reading is completed.
bError	BOOL	This output goes TRUE as soon as an error occurs. This error is described via the eError variable.
eError	E_MBUS_ERROR	In the event of an error, the output issues an error code and bError becomes TRUE at the same time.

Requirements

Development Environment	PLC library to include
TwinCAT from v3.1.4020.14	Tc2_MBus from 3.3.5.0