ABB  GJR2397000R1210  88TK50R1210   Station Bus Coupling FDDI 

ABB Type Designation:GJR2397000R1210  88TK50R1210  Station Bus Coupling FDDIGross Weight:0.9 kg

Product Net Height:261 mm

Product Net Length:198 mm

Product Net Weight:0.8 kg

Product Net Width:40 mm

This GJR2397000R1210  88TK50R1210  module is used for coupling the PROCONTROL station to the PROCONTROL remote bus which uses an FDDI ring (distributed data interface based on optical ---fibre technology) acc. to the ISO/IEC 9314 standard.

The distance between two stations connected to the FDDI ring must not exceed 2 km.

The overall length of the FDDI ring must not exceed 100 km !The module also controls the operational activities necessary for the data exchange within the PROCONTROL station.

GJR2397000R1210  88TK50R1210  Data transfer on the FDDI ring is protected by the generator polynome specified in FDDI standard ISO 9314.

The PROCONTROL telegrams are provided with a specific CRC protection and are packed and transferred in FDDI frames. 

The data transmission on the station bus is handled by a defined protocol controlled by the 88TK50.

All station modules are subject to this protocol, i.e. no module is allowed to participate in active data communication without permission from the protocol.

The protocol control mainly includes the following functions:

Identifying those modules which intend to send data telegrams.

Granting the permit for sending data telegrams over the station bus.

Releasing or inhibiting a telegram transmitted over the station bus.

GJR2397000R1210  88TK50R1210  Controlling the operating modes:

Cyclic mode (transmission of the send telegrams of all modules in a station).

Event mode (transmission of the event telegrams of all modules in a station).

Cyclic distribution mode (transmission of the send telegrams received over the FDDI).

Event distribution mode (transmission of the event telegrams received over the FDDI).

List mode (transmission of the list telegrams).