Siemens SIMATIC PN/BACnet LINK - Page 30

Functions
4.2 State model
PN/BACnet LINK
30 Operating Instructions, 10/2017, A5E39895543-AA
PN/BACnet LINK states
The status of the PN/BACnet LINK is influenced by the status of the PROFINET connection
and the status of the S7 controller.
The following table shows the dependency of the PN/BACnet LINK state from the status of
the PROFINET connection and from the state of the S7 controller.
Scenario PN state
Reaction
PN/BACnet LINK was never
connected to the S7 controller or
has not yet been configured since
startup.
• The PN/BACnet LINK is not visible in the network.
S7 controller connected /
PN/BACnet LINK not yet config-
ured
The PN/BACnet LINK state is CONFIGURATION.
• The PN/BACnet LINK receives the necessary configuration
data from the S7 controller.
• The PN/BACnet LINK applies the configuration data from the
S7 controller and creates the server objects as well as config-
ured BACnet object references.
• If configured as third-party device: PN/BACnet LINK registers
at the specified BBMD and waits for the end of the registra-
tion.
S7 controller connected /
PN/BACnet LINK configured / no
cyclic PROFINET data exchange
or data from the S7 controller
have the IO provider status
"BAD"
The PN/BACnet LINK state changes to STOP mode
(NON_OPERATIONAL).
• All BACnet Server objects are set to "Out_Of_Service" =
TRUE.
• "System_Status" property in the device object is set to
NON_OPERATIONAL.
• The device object is visible in the BACnet network. All re-
quests directed to other server objects are rejected with an er-
ror.
• BACnet client: When object references are configured and the
client control bit is set to "ON" BACnet communication starts.
Cyclic PROFINET data exchange
is active and data from the S7
controller has IO provider status
"GOOD"
The PN/BACnet LINK state changes to RUN (OPERATIONAL).
• Status of "Out_Of_Service" is according to the process image
of the S7 controller
• "System_Status" property in the device object is set to
OPERATIONAL or according to the server control byte.
• BACnet server: Requests are processed according to their
system status.
• BACnet client: Wh
en object references are configured and the
client control bit is set to "ON" communication with the BAC-
net devices starts.