FB_BACnet_MultiStateValue_EX

FB_BACnet_MultiStateValue_EX 1:

Application

The function block FB_BACnet_MultiStateValue_EX can be used for reading and write access to a BACnet object of type MultiStateValue.

VAR_INPUT

bEnablePV       : BOOL;
bNullPV         : BOOL;
nPV             : UDINT;

bEnable: TRUE = The process data is enabled; the value resulting from bNull or nState is written to the corresponding BACnet object, FALSE = process data is disabled

bNull: TRUE = zero writing of the BACnet object (e.g. for deleting a priority), FALSE = write value from nState

nState: Value that is written to the BACnet object, if bEnable = TRUE and bNull = FALSE. Multi-State in the range [1 .. Max_Number_Of_States].

VAR_OUPUT

bReady                   : BOOL;
nPresentValue            : UDINT;
bOverridden              : BOOL;
bOutOfService            : BOOL;
bFault                   : BOOL;
bInAlarm                 : BOOL;
bMultiStateFault         : BOOL;
bOtherFault              : BOOL;
eEventState              : E_BACNETEVENTSTATE;
bAckedTrans_ToOffNormal  : BOOL;
bAckedTrans_ToFault      : BOOL;
bAckedTrans_ToNormal     : BOOL;
nActivePrio              : UINT;
nNbrOfStates             : UDINT;
tObjectID                : T_BACnet_ObjectIdentifier:=16#FFFFFFFF;
bError                   : BOOL;
nErrorId                 : UINT;

bReady: Notification of general readiness. If this output is set, the other status outputs are valid (PresentValue, Overridden ...). If the output is FALSE, the corresponding function block FB_BACnet_Device does not report "Operational", or the block instance was not linked correctly in the TwinCAT System Manager.

nPresentValue: Current value of the BACnet object (see also BACnet specification DIN EN ISO 16484-5 for BACnet object MultiStateValue and property Present_value).

bOverridden, bOutOfService, bFault, bInAlarm: See BACnet specification DIN EN ISO 16484-5 for BACnet object MultiStateValue and property Status_Flags.

bMultiStateFault, bOtherFault: See BACnet specification DIN EN ISO 16484-5 for BACnet object MultiStateValue and property Reliability.

eEventState: E_BACNETEVENTSTATE, see BACnet specification DIN EN ISO 16484-5 for BACnet object MultiStateValue and property Event_State.

bAckedTrans_ToOffNormal, bAckedTrans_ToFault, bAckedTrans_ToNormal: Flags of property Acked_Transitions (see BACnet specification DIN EN ISO 16484-5 for BACnet object MultiStateValue and property Acked_Transitions).

nNbrOfStates: Reports the available number of values, which the Present_Value of the MultiStateValue object can assume (1...nNbrOfStates). If "nNbrOfStates" is 0, then there is no valid "state" which the object can assume (Present_Value is 0).

tObjectID: Object ID of the BACnet object (object type and object instance).

bError: An error is pending.

nErrorId: see global constants BACnet_Globals.

VAR_IN_OUT

Device               : FB_BACnet_Device;

Device: Specification of the instance of the local corresponding BACnet server block. For each BACnet adapter one BACnet server is possible. See FB_BACnet_Adapter and FB_BACnet_Device for further information.

See also