Title:
INPUT AND OUTPUT CONTROL SYSTEM OF PROGRAMMABLE CONTROLLER
Document Type and Number:
Japanese Patent JP3959845
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To make data transferable synchronously between CPU modules and between tasks at the time of multitask processing.
SOLUTION: Respective modules of a PC(programmable controller) are connected by a serial link bus 1 on a ring. Serial link control LSIs 10 in the CPU modules 2 and I/O modules 3 initiate a tact interruption to an execution processor in every constant cycle at the same speed as the transfer speed of the serial link bus 1 and the execution processors in the CPU modules 2 performs input/ output processes to and from the I/O modules 3 in synchronism with tact interruptions.
Inventors:
Karatsu Yasuji
Tetsuhito Watanabe
Toshiyuki Nishiwaki
Tetsuhito Watanabe
Toshiyuki Nishiwaki
Application Number:
JP14864898A
Publication Date:
August 15, 2007
Filing Date:
May 29, 1998
Export Citation:
Assignee:
Fuji Electric Equipment Control Co., Ltd.
International Classes:
G05B19/05; G06F13/24; G06F15/17; H04L12/40; H04Q9/04; (IPC1-7): G05B19/05; G06F13/24; H04L12/40; H04Q9/04
Domestic Patent References:
| JP7077931A | ||||
| JP9237110A | ||||
| JP6131017A | ||||
| JP58120341A | ||||
| JP3045042A | ||||
| JP6163135A | ||||
| JP8083248A | ||||
| JP8255142A |
Attorney, Agent or Firm:
Hiroshi Yamamoto