Patent Number: 6,167,319

Title: Process for generating program listings for programming a logic control unit

Abstract: A process is provided for generating a flow chart representing a control program defined by associative relationships between program levels, states and conditions, each condition specifying a transition from an associated one of the states as a source state to a corresponding selected destination state upon satisfaction of the condition during execution of the control program by the logic control unit. Each program level defines a sub-process of the control program. The process includes the steps of rendering on a chart: a first group of state indicators each representing a corresponding one of a first plurality of the states, and including an associated first state anchor point; a first group of condition indicators each being associated with a corresponding one of the first group of state indicators, each of the first group of condition indicators indicating a corresponding one of a first plurality of the conditions, and including an associated first condition anchor point; a second group of state indicators each indicating a corresponding one of a second plurality of the states, and including an associated second state anchor point; a second group of condition indicators each being associated with a corresponding one of the second group of state indicators, each of the second group of condition indicators indicating a corresponding one of a second plurality of the conditions, and including an associated second condition anchor point; and for each of the conditions, a corresponding transition indicator indicative of transition information specified by the condition.

Inventors: Harris; Richard (San Jose, CA), Wiens; Jack (San Jose, CA)

Assignee: Scientronix, Inc.

International Classification: G05B 11/42 (20060101); G05B 019/42 ()

Expiration Date: 12/26/2017