Title:
PROGRAMMABLE SEQUENCE CONTROLLER
Document Type and Number:
Japanese Patent JPS6441004
Kind Code:
A
Abstract:
PURPOSE:To exchange only those function blocks that require the addition and the remodeling by using a software switch which transfers the function blocks of an external memory part to the program area of an internal memory part. CONSTITUTION:An internal memory part 23 stores a program to carry out the programs stored in each function block and an external memory part 26 stores previously programs as data. When a software switch 1 detects a request for exchange of function blocks, the function blocks 2-4 of the part 26 are transferred to the function block corresponding areas 5 of the part 23. Thus it is possible to exchange those function blocks which perform the change and the addition without stopping the processing execution of those function blocks requiring no exchange. Then the quick countermeasures are possible against the change and the addition of the machines which are controlled in a programmable sequence.
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Inventors:
ISHIBASHI DAISAKU
Application Number:
JP19642887A
Publication Date:
February 13, 1989
Filing Date:
August 07, 1987
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
G05B19/05; G05B19/04; (IPC1-7): G05B19/04
Attorney, Agent or Firm:
Hiroaki Tazawa