Technical data

Fieldbus Communication • 197
BACnet/IP
WAGO-I/O-SYSTEM 750
BACnet/IP Controller
• WritePropertyMultiple Service
Changes the values of several properties of several objects
File access (File Access Services)
• AtomicReadFile Service
Query of a file, which is opened, read and closed again, as a whole or in
part.
• AtomicWriteFile Service
Query of a file, which is opened, written and closed again, as a whole or in
part.
Remote device access (Remote Device Management Service)
• DeviceCommunicationControl Service
Clients instruct remote devices to stop communication with all protocol
units in the application layer (Application Protocol Data Units - APDUs)
for a certain time. This function is mostly used for diagnostic purposes.
Clients need a password for this service.
• ConfirmedPrivateTransfer Service
Allows a BACnet Client to call up non-standardized services; a manufac-
turer identification code (issued by ASHRAE) as well as a service number
must be given for these. The service is confirmed.
• UnconfirmedPrivateTransfer Service
Allows a BACnet Client to call up non-standardized services; a manufac-
turer identification code and a service number must be given for these. The
service is not confirmed.
• ReinitializeDevice Service
The Client can trigger a restart in a remote device or monitor backup and
restore settings there.
• ConfirmedTextMessage Service
Sending of text messages, which are confirmed; can be classified as "nor-
mal" and "urgent"; no support of broadcast and multicast
• UnconfirmedTextMessage Service
Sending of text messages; can be classified as "normal" and "urgent"; no
support of broadcast and multicast
• TimeSynchronization Service
Synchronization of time
• UTCTimeSynchronization Service
Synchronization of time to Universal Time Coordinated (UTC)
• Who-Has and I-Have Services
Search for a certain Object_Name or Object-Identifier or its reference in
other devices / response to this request
• Who-Is and I-Am Services
Query Object_Identifier and/or network address of other network members
/ respond to a request of other participants