ABB Advant 100 Fieldbus

ABB  Advant 100 Fieldbus

Advant Fieldbus 100 (AF 100) is a high performance fieldbus, which is used for: 

• Communication between Advant Controllers 

• Communication between Advant Controllers and S800 I/O Stations, AC 800M  controllers, AC 100 OPC Server, and the equipments developed and sold by  other ABB companies.

Advant Fieldbus supports three transmission media: 

• Twisted pair (Twp) 

• Coaxial (RG59 and RG11) 

• Optical media.

An AF 100 bus can be built up with all the three media, where a part of one kind of  media is a specific segment.  

The following rules apply to the segments: 

• To each twisted pair segment, 32 stations can be connected, and the maximum  segment length is 750 meters (2500 feet) 

• The coaxial segment can be: 

– 300 meters (1000 feet) with cable RG59 or 

– 700 meters (2300 feet) with cable RG11. 

• The optical media is only used in point-to-point communication, and it allows  the total length of a bus segment to be up to 1700 meters (5500 feet). 

• If back-to-back coupled optical segments are used, it is possible to reach up to a  physical length of 13300 meters (43300 feet).

Advant Fieldbus 100 Redundancy Concept 

The Advant Fieldbus 100 redundancy concept contains: 

• Media redundancy 

• Communication interface redundancy 

• S800 I/O Field Communication Interface redundancy.

Functions of Primary CI 

In a redundant configuration, the address of the primary CI is the configured station  address on the bus. The primary CI: 

• Sends all output CDPs. 

• Receives all input CDPs. 

• Sends the time synchronization message if the station is configured as time  synchronization master. 

• Handles the normal Service Data communication for the station. 

• Supervises that the backup can send on the bus. This is done at a low frequency  using the service data protocol.  

• Must be configured as bus master if the module is CI522/CI630 or CI631, so  that the bus master responsibilities are performed.

Functions of Backup CI 

In a redundant configuration, the address of the backup CI on the bus is the  configured station address + 80.  The backup CI: 

• Supervises that the primary CI sends its output CDPs properly. 

• Sends signal to the controller if the primary CI does not send its output CDPs. 

• Receives all input CDPs. 

• Responds to Service Data communication with the Primary. 

• Must be configured as bus master if the module is CI522, CI630 or CI631. If  the station number is less than or equal to 47, the backup module performs the  bus master responsibilities, otherwise it does not.