The CQM1H's rack-less modular design lets you customize your control system by adding "inner boards" for advanced functions , as well as specialized I/O and communications modules. CQM1H offers the most flexibility of all PLC system in its class 4 different base CPUs to choose from; 16 DC inputs built in; expands up to 512 points No separate backplane required Inner Boards allow "customized" configuration of the CPU Serial communications inner board supports protocol macro feature for communication with third-party serial devices Supports all existing and new CQM1 I/O and specialized I/O modules Optional memory cassettes allow backup of sensitive data, provides a real-time clockController Link network transmits 8 kword data packets at up to 2 Mbps ; 32 nodes Advanced instruction set includes PID, Floating point math, protocol macro instructions and more CompoBus/S , SYSMAC BUS and AS-interface masters support remote I/O Up to 15.2 kwords of program...