Variable identifiers may be up to 32 characters long. The library of functions available is probably the industry’s largest, containing everything from simple AND and OR gates to ready-for-use self-tuning "adaptive" PID controllers. Not to forget unique elements for direct interfacing with variable- speed drives and for easy handling of all the software-related redundancy
features the AC 800M controller offers.
Applications can either be loaded into the target controller(s) by non-volatile Compact Flash memory cards or over a serial link or Ethernet network into battery backedup RAM.