Title:
電動射出成形機の通信状態監視方法および通信状態監視画面
Document Type and Number:
Japanese Patent JP6425748
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a communication state monitoring method of a motor-driven injection molding machine monitoring a communication state in communication between a master station and a slave station to catch a sign of communication abnormality.SOLUTION: A communication state monitoring method of a motor-driven injection molding machine monitors a communication state targeting a network where packets are mutually transmitted and received between a master station being a specified substrate (3) in the motor-driven injection molding machine and slave stations being a plurality of substrates (4a, 4b) connected to the master station to each other via a specified communication wire (6). Specifically, the master station, upon receiving a packet transmitted from the plurality of slave stations, detects packet abnormalities such as a packet loss or a bit abnormality for every slave station and calculates the ratio of the packet abnormalities to the packets received normally. When the ratio is less than a first threshold value, it is determined to be a normal state. When the ratio is larger than the first threshold value and less than a second threshold value, it is determined to be a quasi-normal state. When the ratio is larger than the second threshold value, it is determined to be an abnormal state.SELECTED DRAWING: Figure 1
Inventors:
Kawaguchi Rinn
Application Number:
JP2017004671A
Publication Date:
November 21, 2018
Filing Date:
January 13, 2017
Export Citation:
Assignee:
Japan Steel Works, Ltd.
International Classes:
B29C45/76; H04L12/42
Domestic Patent References:
| JP2013229705A | ||||
| JP2012081656A | ||||
| JP2001300993A | ||||
| JP2005125561A | ||||
| JP2009166323A | ||||
| JP2006082334A |
Attorney, Agent or Firm:
Yoshiaki Sugiya
Hiromichi Sugiya
Hiromichi Sugiya