GENERAL DESCRIPTION
The SERCOS interface controller SERCON816 is an integrated circuit for SERCOS interface communication systems. The SERCOS interface is a digital interface for communication between systems which have to exchange information cyclically at short, fixed intervals (62,5 s to 65 ms). It is appropriate for the synchronous operation of distributed control or test equipment (e.g. connection between drives and numeric control).

■ Single-chip controller for SERCOS interface
■ Real time communication for industrial control systems
■ 8/16-bit bus interface, Intel and Motorola control signals
■ Dual port RAM with 2048 word *16-bit
■ Data communications via optical fiber rings, RS 485 rings and RS 485 busses
■ Maximum transmission rate of 16 Mbaud with internal clock recovery
■ Internal repeater for ring connections
■ Full duplex operation
■ Modulation of power of optical transmitter diode
■ Automatic transmission of synchronous and data telegrams in the communication cycle
■ Flexible RAM configuration, communication data stored in RAM (single or double buffer) or transfer via DMA
■ Synchronization by external signal
■ Timing control signals
■ Automatic service channel transmission
■ Watchdog to monitor software and external synchronization signals
■ Compatible mode to SERCON410B SERCOS interface controller
■ 100-pin plastic flat-pack casing