Title:
TIMER INSTRUCTION PROCESSING SYSTEM OF PROGRAMMABLE CONTROLLER
Document Type and Number:
Japanese Patent JPH03139703
Kind Code:
A
Abstract:
PURPOSE:To perform the timer instruction processing of the programmable controller without being limited to the number of contacts by setting an area for log value correction behind the storage area of timer instructions, and specifying a specific internal relay and specifying a timer contact. CONSTITUTION:The system consists of a general CPU 1, a ROM 2 where a system program is written, a RAM 3 for work area data storage, etc., and a memory 4 for user program storage which consists of a ROM or RAM for user program storage. Then a timer instruction can be constituted without using any number 'No' specifying each area and a timer contact. Consequently, inconvenience due to the limitation of the number of timer contacts at the time of the generation of a user program can be laminated.
Inventors:
NAKAI MASARU
Application Number:
JP27901389A
Publication Date:
June 13, 1991
Filing Date:
October 26, 1989
Export Citation:
Assignee:
MATSUSHITA ELECTRIC WORKS LTD
International Classes:
G05B19/05; (IPC1-7): G05B19/05
Domestic Patent References:
| JPS5856102A | 1983-04-02 | |||
| JPS63136201A | 1988-06-08 |
Attorney, Agent or Firm:
Ishida Chochichi (2 outside)