FC750x - PCI Cards for SERCOS

Hardware

The PCI cards for SERCOS interface FC7501 (single-channel) and FC7502 (double-channel) enable direct access to the SERCON816 ASIC. The driver for these passive cards is incorporated into the TwinCAT software and allows optimum access to the SERCOS interface. There are no unnecessary restrictions with regard to the number of bus devices and I/O data per device.

The power of TwinCAT comes into its own with this new interface generation:

Up to 254 devices (servo drives or I/O modules, e.g. Bus Terminals with Bus Coupler BK7500)
No restriction regarding assignment and length of the I/O data
Exact synchronization between TwinCAT and SERCOS
Cycle times up to 62,5 µs are possible
Synchronous process data communication
Master and slave mode can be parameterized by software
It is possible to have two parallel fieldbus channels on one card (2x SERCON816)
Synchronization of both channels and other cards along with PC is possible
Reading of bus configuration possible
FC7501 and FC7502 in revision B
FC7501 and FC7502 in revision C

1. PCI bus interface
2. Socket for connecting the sync cable

11. SERCOS output for connecting the outgoing optical fiber for optical fiber ring A
12. SERCOS input for connecting the return optical fiber for optical fiber ring A
13. Diagnostics LED for optical fiber ring A

21. SERCOS output for connecting the outgoing optical fiber for optical fiber ring B
22. SERCOS input for connecting the return optical fiber for optical fiber ring B
23. Diagnostics LED for optical fiber ring B

The hatched components for SERCOS channel B are not populated on the single-channel FC7501.
Compared with revision B, revision C has a larger board corresponding to the standard height of PCI cards.

TwinCAT I/O provides configuration tools and Windows NT/2000 drivers for programs in any desired high level language (DLLs) and for Visual Basic applications (ActiveX). Applications with OPC interfaces can access the cards via an OPC server.

Diagnostics LED

The diagnostics LED of a fieldbus channel is on, if the data transfer on the optical fiber is disturbed.