FB_MBUS_RawData

This block is used for reading any M-Bus devices. The variable arrData supplies the raw data of the M-Bus device. Only the first telegram is evaluated.

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

Functionality of the block

VAR_INPUT

usiAddress   : USINT;
stSecAdr     : ST_MBUS_SecAdr;
eBaudrate    : E_MBUS_Baudrate := eMBUS_Baud2400;
bStart       : BOOL;
bSND_NKE     : BOOL := TRUE;
bReadInit    : BOOL := TRUE;
tMinSendTime : TIME := t#2s;
bDisabled    : BOOL := FALSE; 

usiAddress: Primary address of the meter to be read with this block.

stSecAdr: Secondary address of the meter to be read with this block (see ST_MBUS_SecAdr).

bStart: A positive edge of this input triggers one reading of the meter.

bSND_NKE: TRUE initializes the meter for each read operation and sets the meter to the first telegram (SND_NKE).

bReadInit: If the PLC is restarted, the meter is read once.

tMinSendTime: Standard t#2s. The meter is read again, once the time set here has elapsed. If t#0s the meter is not read and can be read manually with bStart.

bDisabled: TRUE = deselection of the block.

VAR_OUTPUT

bBusy            : BOOL;
bReady           : BOOL;
bError           : BOOL;
eError           : E_MBUS_ERROR;
dwIdNumber       : DWORD;
byStatus         : BYTE;
byGEN            : BYTE;
byCounter        : BYTE;
usiRecivedAdr    : USINT;
eMedium          : E_MBUS_Medium;
sMan             : STRING(3);
iLen             : INT;
arrData          : ARRAY [0..259] OF BYTE; 

VAR_IN_OUT

stCom : ST_MBUS_Communication; 

stCom: This structure is used to link the block FB_MBUSKL6781() with the meter blocks (see ST_MBUS_Communication).

Requirements