| 700 / | HD | DATA PROCESSING: GENERIC CONTROL SYSTEMS OR SPECIFIC APPLICATIONS |
| 1 | DD | GENERIC CONTROL SYSTEM, APPARATUS OR PROCESS {15} |
| 11 | | .~ Sequential or selective {7} |
| 12 | DD | .~.~> State of condition or parameter (e.g., on/off) {2} |
| 17 | DD | .~.~> Operator interface (e.g., display with control) {1} |
| 19 | DD | .~.~> Plural controlled systems, mechanisms, or elements |
| 20 | DD | .~.~> Plural controllers |
| 21 | DD | .~.~> Failure protection or reliability |
| 22 | DD | .~.~> Electrical power distribution |
| 23 | DD | .~.~> Sequence program response {4} |