FB_BACnetMVSetpoint

Functional description

This function block generates a BACnet multistate value object and provides write and read variables for the object within the PLC.
Alternatively, the following versions are available:

• FB_BACnetMV1201
• FB_BACnetMV1202
• FB_BACnetMV1203
• FB_BACnetMVDisplay

The parameters, which can be written from the PLC, can also be written from the BACnet side; the last change is always the valid one. These parameters are transferred from the PLC via ADS and into the PLC via a cyclic interface.
The value of udiForceVal is written once to the Present Value of the MV object on each rising edge at bForce.

VAR_INPUT

bForce      : BOOL;
udiForceVal : UDINT;

bForce: The value of rForceVal is written once to the Present Value of the AV object on each rising edge at bForce.

udiForceVal: value that is written to the BACnet property Present Value.

VAR_OUTPUT

udiPrVal      : UDINT;
bErr          : BOOL;
udiErrId      : UDINT;
udiErrArg     : UDINT;

udiPrVal: current value of the BACnet property Present Value – read directly from the BACnet

bErr: indicates a general error in the function block. The cause can be in BACnet, in the ADS data exchange, or due to incorrect parameterization.

udiErrId / udiErrArg: contains the error number and the error argument. See error codes.

VAR_IN_OUT

fbDvc     : FB_BACnet_Device;

fbDvc: reference to the function block of the BACnet device object

Requirements