C1220.000
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Product Description
C1220.000 is a Beckhoff interface card in the C1 Interface Cards series. It serves as a Lightbus master and uses a physical ring topology to coordinate communication between connected fieldbus devices. The fiber-optic fieldbus medium supports electrical isolation and communication over optical cabling, while two fiber connectors provide the ring connections. The card supports eight logical rings and up to 254 nodes, allowing multiple device groups to be managed within the network.
The interface operates at 2.5 MBaud and transfers 32 bits of process data every 25 µs for cyclic control communication. It provides two communication channels, each with a channel size of 255 bytes. A Siemens SAB 80C166-S interface processor handles communication tasks, while 4 kB of dual-port RAM provides shared data exchange between the interface processor and the host system. The card connects to its host through an ISA bus.
The C1220.000 operates from a 5 VDC supply and consumes 800 mA of current. It measures 161 mm by 107 mm.
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