Technical data

204 • Fieldbus Communication
BACnet/IP
WAGO-I/O-SYSTEM 750
BACnet/IP Controller
4.2.1.2.4.5 Device Management (DM)
Information on state, presence and availability of BACnet devices is ex-
changed. Communication with certain devices can also be enabled and dis-
abled. Through DM, clock time in the entire system can be synchronized.
Software can also be restarted on demand. There are also diverse diagnostic
and access possibilities.
Example:
DM-DDB-A
Device Management Dynamic Device Binding-A
Device A obtains information on other devices within
the network and interprets device information.
4.2.1.2.4.6 Network Management (NM)
NM regulates terminal sessions and remote uses. Connections to other devices
are established.
Example:
NM-CE-B
Network Management Connection Establishment-B
Device B executes commands to create and close
connections.
Each IA is composed of several BIBBs. These contain functions that vary de-
pending on device profile (see section 4.2.1.2.7).
4.2.1.2.5 BACnet Interoperability Building Blocks (BIBB)s
A BIBB defines which elements of the BACnet protocol must be implemented
in the device. Compared to the BIBBs from different manufacturers, common
features represent a basis for interoperability between the devices. BIBBs
form function blocks for the respective Interoperability Areas (IA).
Example:
DS-RP- A
IA Service User
BIBB
Meaning:
• DS (DataSharing) is the IA of the BIBB
• RP (ReadProperty) designates the executable service
• A (Data Requester) identifies the Client which, in this case, makes a read
request to a Server (B for data holder).