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Compatible with programs written for Siemens® 555-1101, 555-1103, 555-1105, and CTI 2500-C300
512K user memory
8192 digital / 8192 analog I/O
512 loops / 512 alarms
Built-in Ethernet for programming and MMI
Built-in USB for programming
Profibus-DP master and RS485 Remote I/O ports
Built-in SD flash card slot for firmware update
