Five kinds of CPU are available.- Module addition: Up to 8 slot- Maximum I/O points: 8,192 points- Program memory: 2 K to 15.8 K/Data memory: 2.4 K to 30.4 K- Communication port: 2 ports(1 port only for the D2-230)- PID control: Up to 16 build-in loops (D2-260/265)