FB_BACnet_RemoteProgram_EX

Application

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

VAR_INPUT

Notice: Variables shown in red are not included in the basic version of the function block, but in the _WR version.

bEnablePV       : BOOL;
ePV             : E_BACNETPROGRAMREQUEST;
bRetrigger      : BOOL;

bEnablePV: Enables the value of input ePV. If the input is set to TRUE, the value of ePV is written to the property Program_Change of the object. If the input is set to FALSE, 0xFFFF is written to the process data of the property Program_Change of the object. The value 0xFFFF prevents writing to the remote server and therefore writing to the remote object.

ePV: Request to the remote program object. If bEnablePV was set to TRUE, the value of the input is written to the property Program_Change (see also Transition diagram).

bRetrigger: A change from FALSE to TRUE triggers writing of the input ePV to the property Program_Change, if input bEnablePV is set to TRUE.

VAR_OUPUT

bReady              : BOOL;
ePrgState           : E_BACNETPROGRAMSTATE;
ePrgChangeReq       : E_BACNETPROGRAMREQUEST;
ePrgReasonHalt      : E_BACNETPROGRAMERROR;
bOverridden         : BOOL;
bOutOfService       : BOOL;
bFault              : BOOL;
bInAlarm            : BOOL;
bProcessError       : BOOL;
bOtherFault         : BOOL;
tObjectID           : DINT:=-1;
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.

ePrgState: Feedback of the current program state (see also Transition diagram).

ePrgChangeReq: Feedback on the state of the current program request (see also Transition diagram).

ePrgReasonHalt: Error feedback on program cancellation.

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

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

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

RemoteDevice    : FB_BACnet_RemoteDevice;

RemoteDevice: Specification of the instance of the corresponding remote BACnet server block (client). A BACnet adapter can be used for several BACnet clients. See FB_BACnet_Adapter and FB_BACnet_RemoteDevice for further information.

Transition diagram