EP0015287A1 - Cable entree/sortie de donnees - Google Patents

Cable entree/sortie de donnees

Info

Publication number
EP0015287A1
EP0015287A1 EP79900873A EP79900873A EP0015287A1 EP 0015287 A1 EP0015287 A1 EP 0015287A1 EP 79900873 A EP79900873 A EP 79900873A EP 79900873 A EP79900873 A EP 79900873A EP 0015287 A1 EP0015287 A1 EP 0015287A1
Authority
EP
European Patent Office
Prior art keywords
layers
layer
cable
input
signal tracks
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.)
Withdrawn
Application number
EP79900873A
Other languages
German (de)
English (en)
Inventor
Geoffrey Clarke
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.)
Schneider Electric USA Inc
Original Assignee
Square D Co
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 Square D Co filed Critical Square D Co
Publication of EP0015287A1 publication Critical patent/EP0015287A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/08—Flat or ribbon cables
    • H01B7/0838—Parallel wires, sandwiched between two insulating layers

Definitions

  • This invention relates to an input/output (I/O) data cable for use in interconnecting the modular components of a programmable controller.
  • I/O input/output
  • a programmable controller comprises a processor which controls the operation of the system being controlled by receiving logic signals from a plurality of input modules and feeding logic signals to a plurality of output modules, the input and output modules being connected to the processor through respective data cables. Also the logic level voltage must be fed to the input modules, output modules and processor.
  • the logic signals which pass between the processor and the input and output modules are subjected to considerable interference especially in the case when the system being controlled is a machine. Accordingly, it is necessary to ensure that the interconnecting data cables have high immunity from such interference.
  • an input/output data cable for a programmable controller comprising a flexible laminate made up of three layers, each layer having a conducting part and an insulating part, the first of said layers being adapted to be connected to the system ground, the second of said layers being adapted to carry a logic voltage, and the third of said layers having a plurality of signal tracks for carrying data signals, wherein said first and second layers are adjacent.
  • an input/output data cable for a programmable controller comprising a flexible laminate made up of two layers, each layer having a conducting part and an insulating part, the conducting part of the first of said layers having a single conductin track extending substantially across the whole width of the layer, and the conducting part of the second of said layer being formed by a conducting track extending over part of the width of said layer and by a plurality ofsignal tracks for carrying data signals.
  • Fig. 1 is a top plan view of one embodiment of a data cable made in accordance with said one aspect of the present invention
  • Fig. 2 is a sectional view taken along the line II - II of Fig. 1;
  • Figs. 3a, 3b and 3c are plan views of the three layers of the data cable of Fig. 1;
  • Figs. 4a and 4b are perspective and elevational views respectively of a connector for use with the data cable of Fig. 1;
  • Figs. 5a and 5b are plan views of the two layers of one embodiment of a data cable made in accordance with said second aspect of the present invention.
  • an input/ output data cable 1 for interconnecting the modular components of a programmable controller comprises a flexible laminate assembly made up of three layers 10,
  • the layer 11 and 12 each having a conducting part and an insulating part.
  • the layer 11 is used for the logic voltage; the layer 12 is used for the system ground and layer 10 is used for data signals. As illustrated in Figs. 3a and 3b the layers 11 and
  • each of the copper tracks 110 and 120 each comprise a single copper track 110 and 120 attached to an insulating polyester strip 111 and 121 respectively. At the ends of each of the copper tracks 110 and 120 there are provided contact tabs 114 and 124 respectively for connection with a connector as hereinafter described.
  • the layer 10 comprises a plurality of side-by-side signal carrying conductors 100 extending along the layer
  • the data cable is formed by glueing the layers together one on top of the other to form a laminate structure so that the logic voltage carrying layer 11 and system ground layer 12 are adjacent and the data signal carrying layer 10 is on the exterior.
  • An additional insulating strip 133 is laid on top of the layer 12.
  • the resultant assembly comprises a flexible laminated cable having relatively wide area, tracks the adjacent layers being extremely close to each other.
  • This arrangement provides high immunity and additionally minimises inductive losses along the data signal tracks due to the relative closeness of the logic voltage carrying layer 11.
  • a suitable terminal 40 is illustrated in Fig. 4. and is adapted to be attached to each end of the data cable 1.
  • the terminal 40 has a plurality of spaced contacts 41, end ones 41a and 41b contacting with the respective tabs 114 and 124 of the voltage level layer 11 and ground layer 12.
  • Central contacts 41c engage respective tracks of the data signal layer 10.
  • the data carrying layer 10 should be placed adjacent the grounded layer 12.
  • a data cable is made up of two layers 21 and 22.
  • the first of the layers 21 comprises a single copper track 210 attached to an insulating polyester strip 211, a contact tab 214 is provided for connection with a conductor of the type illustrated in Figs. 4a. and 4b.
  • the second layer 22 comprises a copper track 220 extending across substantially half of the width of the layer 22 and a plurality of side-by-side signal carrying conductors 225.
  • the track 220 and conductors 225 are attached to an insulating polyester strip 221 and the track 220 is provided with a contact tab 224.
  • the data cable is formed by glueing the layers 21 and 22 together one on top of the other to form a laminate structure.
  • the logic voltage can be applied either to the track 214 or track 224 depending on the system design, ground being connected to the other track.

Landscapes

  • Insulated Conductors (AREA)
  • Communication Cables (AREA)

Abstract

Cable flexible entree/sortie de donnees utilisees avec des controleurs programmables. Le cable possede un conducteur de terre, un conducteur de tension logique, et plusieurs pistes de signaux. Les conducteurs sont disposes sur deux ou trois couches de materiaux plastiques flexibles suivant des dispositions particulieres de maniere a obtenir un haut niveau d'immunite contre les pertes dues aux interferences et aux inductions faibles.
EP79900873A 1978-08-10 1980-03-11 Cable entree/sortie de donnees Withdrawn EP0015287A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7832889 1978-08-10
GB3288978 1978-08-10

Publications (1)

Publication Number Publication Date
EP0015287A1 true EP0015287A1 (fr) 1980-09-17

Family

ID=10498969

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79900873A Withdrawn EP0015287A1 (fr) 1978-08-10 1980-03-11 Cable entree/sortie de donnees

Country Status (10)

Country Link
EP (1) EP0015287A1 (fr)
JP (1) JPS6248328B2 (fr)
AU (1) AU536152B2 (fr)
CA (1) CA1139855A (fr)
DK (1) DK148570C (fr)
ES (1) ES483323A1 (fr)
IE (1) IE48617B1 (fr)
IT (2) IT7953510V0 (fr)
WO (1) WO1980000389A1 (fr)
ZA (1) ZA794174B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2166603B (en) * 1984-09-28 1988-07-20 Yazaki Corp Electrical harness
DE3650427T2 (de) * 1985-08-29 1996-07-18 Micro Motion Inc Sensormontage für schwingende strukturen.
US4716500A (en) * 1985-10-18 1987-12-29 Tektronix, Inc. Probe cable assembly
JPH0648658U (ja) * 1991-02-14 1994-07-05 京都機械工具株式会社 入浴補助装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1315907A (en) * 1970-12-17 1973-05-09 Amp Inc Flat cables
US3796986A (en) * 1972-07-03 1974-03-12 Bell Telephone Labor Inc Interconnection system for reusable gang-type connections between flexible printed circuitry and the like
US3757029A (en) * 1972-08-14 1973-09-04 Thomas & Betts Corp Shielded flat cable
JPS49135178A (fr) * 1973-05-02 1974-12-26
US3923364A (en) * 1973-12-06 1975-12-02 Executone Inf Sys Inc Shielded flexible conductor cable and assembly thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8000389A1 *

Also Published As

Publication number Publication date
IT1119143B (it) 1986-03-03
ZA794174B (en) 1981-04-29
IE791527L (en) 1980-02-10
AU536152B2 (en) 1984-04-19
ES483323A1 (es) 1980-04-01
DK148570B (da) 1985-08-05
IE48617B1 (en) 1985-03-20
IT7953510V0 (it) 1979-08-10
AU4979379A (en) 1980-03-06
CA1139855A (fr) 1983-01-18
DK153280A (da) 1980-04-10
DK148570C (da) 1985-12-30
IT7968651A0 (it) 1979-08-10
JPS55500694A (fr) 1980-09-25
WO1980000389A1 (fr) 1980-03-06
JPS6248328B2 (fr) 1987-10-13

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): CH DE FR GB NL SE

17P Request for examination filed
18D Application deemed to be withdrawn

Effective date: 19811126

D18D Application deemed to be withdrawn (deleted)
17Q First examination report despatched

Effective date: 19901123

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

R18D Application deemed to be withdrawn (corrected)

Effective date: 19910104

RIN1 Information on inventor provided before grant (corrected)

Inventor name: CLARKE, GEOFFREY