User interface for a process control device

摘要: A user interface including a dual navigational menu system forming part of configuration or programming procedure in process control device such as flow controller. The controller includes key pad by which the enters instructions and data into device, display for displaying alphanumeric information monitoring means detecting predetermined input indicating that mode is desired. When mode, pressing direction keys detected to sequentially advance through comprised matrix items arranged rows columns. Means also provided entry position operates directly select given item obviate need advancing all prior order reach desired item. activated, random access memory used store entered user. help implemented designated "help key" displays context sensitive an activated whenever "help" pressed.