Data transmission method

Abstract

Abstract PURPOSE:To improve the quick response and reliability by allowing an interruption signal generating station to transmit an interruption information frame to other stations by means of group broadcast communication twice in a control data transmitter. CONSTITUTION:When a notice of generation of an interruption signal 2 is given from a process input/output device PIO22 to a station STN12 of a data transmitter, the STN12 transmits twice the interruption information frame to other stations 11, 13 by means of group broadcast communication. When the other stations 11, 13 receive the interruption information frames 9, 10, the stations discriminate whether the information is the interruption information received already or not depending on the sequence number and when the information is new information, the interruption information 5, 8 is given to a CPU 21 and a process controller 23. When the information is the same interruption information given already, it is made ineffective.

Inventors

• 👤 Yoshio Sashita
• 👤 指田　吉雄

Bibliographic Details