JPS5463637A - Communication control system - Google Patents

Communication control system

Info

Publication number
JPS5463637A
JPS5463637A JP12949577A JP12949577A JPS5463637A JP S5463637 A JPS5463637 A JP S5463637A JP 12949577 A JP12949577 A JP 12949577A JP 12949577 A JP12949577 A JP 12949577A JP S5463637 A JPS5463637 A JP S5463637A
Authority
JP
Japan
Prior art keywords
polling
group
unit
cpu
terminal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP12949577A
Other languages
Japanese (ja)
Other versions
JPS5651383B2 (en
Inventor
Tomohito Shibata
Shigeru Hashimoto
Noboru Yamamoto
Kazuo Shimomichi
Kanzo Noda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP12949577A priority Critical patent/JPS5463637A/en
Publication of JPS5463637A publication Critical patent/JPS5463637A/en
Publication of JPS5651383B2 publication Critical patent/JPS5651383B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Computer And Data Communications (AREA)
  • Small-Scale Networks (AREA)

Abstract

PURPOSE: To reduce the load of CPU by confirming non-group data response signals by a channel unit and polling to terminal equipments by the channel unit instead of CPU in the group polling to terminal equipments.
CONSTITUTION: CPU1, main memory 2, channel unit 4 and one or plura 1 sub- channel units 5-0 to 5-m connected to unit 4 are provided, and terminal equipments 13-0 13-n are provided for units 5-0 to 5-m respectively through main storage 12, and the group polling commaned which CPU issues to the terminal group is issued onto the circuit through unit 4, thus constituting a comunication control system. In this constitution, the system is so constituted that the last one of terminal equipment 13-0 to 13-n in the equipment group which is polled may return the response signal corresponding to polling; and when it is detected that a non-data response signal including no transfer data has been issued, unit 4 issues a polling command spontaneously.
COPYRIGHT: (C)1979,JPO&Japio
JP12949577A 1977-10-28 1977-10-28 Communication control system Granted JPS5463637A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12949577A JPS5463637A (en) 1977-10-28 1977-10-28 Communication control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12949577A JPS5463637A (en) 1977-10-28 1977-10-28 Communication control system

Publications (2)

Publication Number Publication Date
JPS5463637A true JPS5463637A (en) 1979-05-22
JPS5651383B2 JPS5651383B2 (en) 1981-12-04

Family

ID=15010883

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12949577A Granted JPS5463637A (en) 1977-10-28 1977-10-28 Communication control system

Country Status (1)

Country Link
JP (1) JPS5463637A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58107792A (en) * 1981-12-22 1983-06-27 Yamatake Honeywell Co Ltd Data transmission system in air-conditioner controller

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58107792A (en) * 1981-12-22 1983-06-27 Yamatake Honeywell Co Ltd Data transmission system in air-conditioner controller

Also Published As

Publication number Publication date
JPS5651383B2 (en) 1981-12-04

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