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ABB INNIS21｜Network Interface Slave Module｜
INNIS21
HCU cabinet connected to Cnet backbone ring network
As the physical interface of the control cabinet to the external high-speed ring network, it connects the data exchange between the MFP main control and I/O card of this cabinet and the entire plant operation station, as well as other cabinets, and transmits real-time measurement points, alarms, trends, and SOE accident timing.
Three speed communication speed dial-up switching
0.5M / 2M / 10M Baud， Maximum 10Mbps; A single Cnet loop can have up to 250 nodes, and the entire system supports over 62000 process measurement points, with performance far exceeding INNIS01.
Dual redundant ring network architecture
Support dual card and dual coaxial cable redundant networking, single loop disconnection without disturbance switching, standard configuration for power plants and key chemical units.
Improve hardware diagnosis
Multiple sets of status LEDs on the panel, displaying real-time transmission and reception counts, link disconnections, address conflicts, and module self-test faults; Built in CRC data verification and transmission error correction, making it easy to quickly troubleshoot network faults.
Multi type data forwarding
Process four types of messages: broadcast, clock synchronization, multicast, and NIS login, and cooperate with IMSET01 and IMSED01 to achieve unified SOE millisecond time synchronization throughout the factory.
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