JP2010028670A5 - - Google Patents
Download PDFInfo
- Publication number
- JP2010028670A5 JP2010028670A5 JP2008190103A JP2008190103A JP2010028670A5 JP 2010028670 A5 JP2010028670 A5 JP 2010028670A5 JP 2008190103 A JP2008190103 A JP 2008190103A JP 2008190103 A JP2008190103 A JP 2008190103A JP 2010028670 A5 JP2010028670 A5 JP 2010028670A5
- Authority
- JP
- Japan
- Prior art keywords
- connector
- communication
- devices
- line
- external connection
- 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.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 claims 6
- 230000000875 corresponding Effects 0.000 claims 6
- 230000001276 controlling effect Effects 0.000 claims 3
Claims (7)
上記装置のそれぞれは、
他の装置との間のデータ送受信を制御する通信ドライバ・レシーバ部と、
一対のコネクタと、
上記一対のコネクタ間を接続するとともに上記通信ドライバ・レシーバ部に接続された一対の通信線を含む内部配線路と、
上記一対の通信線に対しに選択的に接続可能に配置された終端抵抗と、
上記通信線と上記終端抵抗の間に配置されたスイッチと、
上記スイッチを制御する制御手段と、
上記コネクタが上記外部接続手段に接続されているかどうかを判定する判定手段と、を有し、
上記通信システムのシリアル通信経路の終端に位置する二装置はそれぞれ、上記一対のコネクタの一方が上記外部接続手段を介して他の装置のコネクタに接続され他方のコネクタが上記外部接続手段に接続されない状態となり、上記シリアル通信経路の中間に位置する装置は上記一対のコネクタが上記外部接続手段を介してそれぞれ他の装置のコネクタに接続されることで、上記コネクタを介して接続された上記内部配線路と上記外部接続手段が上記シリアル通信経路を構成し、上記少なくとも３台の装置が互いにシリアル接続され、
上記装置それぞれの上記制御手段は、
上記判定手段が上記一対のコネクタの両方に上記外部接続手段が接続された状態を検知した上記装置においては、上記スイッチが終端抵抗を上記内部配線路に接続しない状態とし、
上記判定手段が上記一対のコネクタのいずれか一方のみに上記外部通信線が接続された状態を検知した上記装置においては、上記スイッチが終端抵抗を上記内部配線路に接続する状態とする制御を行うように構成されてなるシリアル通信システム。 A communication system comprising at least three devices and external connection means for connecting the devices ,
Each of the above devices
A communication driver / receiver unit that controls data transmission and reception with other devices ;
A pair of connectors;
An internal wiring path including a pair of communication lines connected between the pair of connectors and connected to the communication driver / receiver unit;
A termination resistor arranged to be selectively connectable to the pair of communication lines ;
A switch disposed between the communication line and the termination resistor;
Control means for controlling the switch;
Determination means for determining whether or not the connector is connected to the external connection means ,
In each of the two devices located at the end of the serial communication path of the communication system, one of the pair of connectors is connected to the connector of the other device via the external connection means, and the other connector is not connected to the external connection means. The device located in the middle of the serial communication path is connected to the internal wiring connected via the connector by connecting the pair of connectors to connectors of other devices via the external connection means. And the external connection means constitute the serial communication path, and the at least three devices are serially connected to each other ,
The control means of each of the devices is
In the apparatus in which the determining means detects a state in which the external connecting means is connected to both of the pair of connectors, said switch is a state do not want to connect the termination resistor to the internal wiring line,
In the determination means the device which detects the state of the external communication line only either one of the pair of connectors are connected, the control in which the switch is in a state to connect the termination resistor to the internal wiring line A serial communication system configured to perform
上記外部接続手段は、通信線と、その両端に配置された一対のコネクタと、を有し、
上記外部接続手段の一対のコネクタをそれぞれ二装置の対応するコネクタに接続することで当該二装置がシリアル接続されるように構成されており、
上記装置の上記一対のコネクタの一方の配線と対応する上記外部接続手段のコネクタの配線とは対応する接続関係に配置され、当該コネクタ間の接続により第１信号の伝達経路が形成される構成を備えており、
上記装置の上記一対のコネクタの他方の配線と対応する上記外部接続手段のコネクタの配線は対応する関係に配置され、当該コネクタ間の接続により第２信号の伝達経路が形成される構成を備えており、
上記制御手段は、第１信号及び第２信号の論理和信号により上記スイッチの制御信号を形成するシリアル通信システム。 In claim 1,
The external connection means includes a communication line, and a pair of connectors disposed at both ends, and
The two devices are configured to be serially connected by connecting the pair of connectors of the external connection means to the corresponding connectors of the two devices, respectively.
The wiring of the connector of the external connection means corresponding to one wiring of the pair of connectors of the device is arranged in a corresponding connection relationship, and the transmission path of the first signal is formed by the connection between the connectors. Has
Includes a configuration in which the connector of the wiring of the external connection means corresponding to the other wire of the pair of connectors of the device is arranged in a corresponding relationship, Ru transmission path of the second signal is formed by the connection between the connector And
A serial communication system in which the control means forms a control signal for the switch by a logical sum signal of a first signal and a second signal.
上記外部接続手段は、上記通信線をシールドするシールド線を含むものであり、
上記第１信号及び第２信号は、上記シールド線により伝えられる接地電位であるシリアル通信システム。 In claim 2,
Said external connecting means is one including a shield wire for shielding said communication line,
The serial communication system, wherein the first signal and the second signal are a ground potential transmitted by the shield line.
上記外部接続手段は、上記判定手段を構成する接続判定線を含むものであり、
上記第１信号及び第２信号は、上記接続判定線により伝えられる２値信号のいずれか一方であるシリアル通信システム。 In claim 2,
Said external connecting means is one including a connection determination lines constituting the determination means,
The serial communication system, wherein the first signal and the second signal are any one of binary signals transmitted through the connection determination line.
上記第１型装置は、
他の装置との間のデータ送受信を制御する通信ドライバ・レシーバ部と、
一のコネクタと、
通信ドライバ・レシーバ部と上記コネクタとの間を接続する通信線と制御信号を伝達する制御線とを含む内部通信経路と、
上記通信線に接続された終端抵抗と、を有し、
上記第２型装置のそれぞれは、
他の装置との間のデータ送受信を制御する通信ドライバ・レシーバ部と、
第１及び第２のコネクタと、
上記第１及び第２のコネクタ間を接続するとともに上記通信ドライバ・レシーバ部に接続された一対の通信線と、
制御信号を伝達する制御線とを含む内部配線路と、
上記一対の通信線に対して選択的に接続可能にされた終端抵抗と、
上記通信線と上記終端抵抗の間に配置されたスイッチと、
上記スイッチを制御する制御手段と、
上記第２のコネクタが上記外部接続手段に接続されているかどうかを判定する判定手段と、を有し、
上記第１型装置は上記通信システムのシリアル通信経路の一方の終端に位置し、上記第２装置のいずれか一方が他方の終端に位置し、他の上記第２型装置が中間に位置するように、上記装置がそれぞれ対応する上記コネクタを介して上記外部接続手段に接続されることで上記内部配線路と上記外部接続手段が上記シリアル通信経路を構成し、上記装置が互いにシリアル接続され、
上記第２型装置それぞれの上記制御手段は、
上記判定手段が上記第２コネクタに上記接続手段が接続されない状態にあると判定した上記第２型装置においては、上記スイッチが上記終端抵抗を上記内部配線路の通信線に接続する状態とし、上記第１コネクタを介して上記外部接続手段の制御線に対して２値信号のいずれか一方の信号を出力し、
上記判定手段が上記第２コネクタに上記接続手段が接続された状態にあると判定した上記第２型装置においては、上記スイッチが上記終端抵抗を上記内部配線路の通信線に接続しない状態とし、上記第１コネクタを介して上記外部接続手段の制御線に対して上記第２コネクタを介して入力された上記一方の信号を出力する制御を行うように構成されてなるシリアル通信システム。 A communication system comprising a first type device , at least two second type devices, and an external connection means including a communication line and a control line for connecting the devices ,
The first type device is
A communication driver / receiver unit that controls data transmission and reception with other devices ;
One connector,
An internal communication path including a communication line connecting the communication driver / receiver unit and the connector and a control line for transmitting a control signal;
It has a terminating resistor connected to the communication line, and
Each of the second-type equipment,
A communication driver / receiver unit that controls data transmission and reception with other devices ;
First and second connectors;
A pair of communication lines connected between the first and second connectors and connected to the communication driver / receiver unit;
An internal wiring path including a control line for transmitting a control signal;
A terminal resistor that is connectable to the hand selection択的to the pair of communication lines,
A switch disposed between the communication line and the termination resistor;
Control means for controlling the switch ;
Determination means for determining whether or not the second connector is connected to the external connection means ,
The first type device is located at one end of the serial communication path of the communication system, one of the second devices is located at the other end, and the other second type device is located in the middle. in, the device corresponding to the internal wiring path in Rukoto connected to the external connecting means through the connector and the external connection means constitute the serial communication path, the device is serially connected to each other,
The second type device each of the control hand stage,
In the determination means and the second type device which is determined to be in a state without the connection means is connected to said second connector, and a state in which the switch connects the termination resistor to a communication line of the internal wiring line, the One of the binary signals is output to the control line of the external connection means via the first connector,
In the determination means and the second type device which is determined to be in a state where said connection means is connected to said second connector, and a state in which the switch does not connect the termination resistor to a communication line of the internal wiring line, A serial communication system configured to perform control to output the one signal input via the second connector to a control line of the external connection means via the first connector.
上記装置のそれぞれは、
他の装置との間のデータ送受信を制御する通信ドライバ・レシーバ部と、
第１及び第２コネクタと、
上記第１及び第２コネクタ間を接続するとともに上記通信ドライバ・レシーバ部に接続された一対の通信線と、制御信号を伝達する制御線とを含む内部通信経路と、
上記通信線に対して選択的に接続可能にされた終端抵抗と、
上記通信線と上記終端抵抗の間に配置されたスイッチと、
上記スイッチを制御する制御手段と、
上記第２コネクタが上記外部接続手段に接続されているかどうかを判定する判定手段と、を有し、
上記少なくとも３台の装置は、第１の装置の第２コネクタを上記外部接続手段を介して第２の装置の第１コネクタに、上記第２の装置の第２コネクタを上記外部接続手段を介して第３の装置の第１コネクタにそれぞれ接続することで、上記装置の内部通信経路と上記装置間を接続する上記外部接続手段とによって上記通信システムのシリアル通信経路を構成し、上記装置が該シリアル通信経路によって互いにシリアル接続され、
上記外部接続手段は、上記装置の上記通信線にそれぞれ接続される一対の通信線と、第１制御線と、第２制御線と、を有し、
上記装置の上記制御手段それぞれは、
上記判定手段が上記第２コネクタに上記外部接続手段が接続されない状態にあると判定した上記装置においては、上記第１コネクタを介して上記第１制御線に対して２値信号のいずれか一方の信号を出力し、
上記判定手段が上記第２コネクタに上記外部接続手段が接続された状態にあると判定した上記装置においては、上記第２コネクタを介して入力された上記一方の信号を、上記第１コネクタを介して上記第１制御線に対して出力し、
上記判定手段が上記第１コネクタに上記外部接続手段が接続されない状態にあると判定した上記装置においては、上記第２コネクタを介して上記第２制御線に対して２値信号のいずれか一方の信号を出力し、
上記判定手段が上記第１コネクタに上記外部接続手段が接続された状態にあると判定した上記装置においては、上記第２コネクタを介して入力された上記一方の信号を、上記第２コネクタを介して上記第２制御線に対して出力し、
上記判定手段が上記第２コネクタ及び第１コネクタの双方に上記外部接続手段が接続された状態にあると判定した上記装置においては、上記スイッチを上記終端抵抗を通信経路に接続しない状態にし、
上記判定手段が上記第２コネクタ又は第１コネクタのいずれか一方のみに上記外部接続手段が接続された状態にあると判定した上記装置においては、上記スイッチを終端抵抗を通信経路に接続する状態にする制御をそれぞれ行う構成のシリアル通信システム。 A communication system comprising at least three devices and external connection means for connecting between the devices,
Each of the above devices
A communication driver / receiver unit that controls data transmission and reception with other devices ;
First and second connectors;
An internal communication path including a pair of communication lines connected between the first and second connectors and connected to the communication driver / receiver unit, and a control line for transmitting a control signal ;
A terminal resistor that is connectable to the hand selection択的to the communication line,
A switch disposed between the communication line and the termination resistor;
Control means for controlling the switch;
Determining means for determining whether the second connector is connected to the external connection means ;
The at least three devices include the second connector of the first device via the external connection means and the first connector of the second device, and the second connector of the second device via the external connection means . And connecting to the first connector of the third device respectively , the serial communication path of the communication system is configured by the internal communication path of the device and the external connection means for connecting the devices. Serially connected to each other via a serial communication path ,
The external connection means includes a pair of communication lines connected to the communication line of the device, a first control line, and a second control line,
Each of the control means of the device is
The determination means described above in the apparatus is determined to be in a state where the external connecting means is not connected to the second connector, one of the binary signal to the first control line via the first connector Output signal,
In the determination means the device is determined to be in a state where the external connecting means is connected to said second connector, said one of the signal input through the second connector, through the first connector Output to the first control line ,
The determination means described above in the apparatus is determined to be in a state where the external connecting means is not connected to the first connector, either one of the binary signal to the second control line via the second connector Output signal,
In the determination means the device is determined to be in a state where the external connecting means is connected to said first connector, said one of the signal input through the second connector, through the second connector Output to the second control line ,
In the determination means the device is determined to be in a state where the external connecting means is connected to both of the second connector and the first connector, and the switch to a state which is not connected to the communication path the terminating resistor,
In the apparatus in which the determination means determines that a state where only either one of the second connector or the first connector the external connection means is connected, in a state of connecting the switch to the terminating resistor in the communication path A serial communication system configured to perform each control .
上記通信ドライバ及びレシーバは、ＥＩＡ−４８５（ＲＳ−４８５規格）に適合したものであるシリアル通信システム。 In any one of Claims 1 thru | or 6.
The communication driver and the receiver are serial communication systems that conform to EIA-485 (RS-485 standard).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008190103A JP2010028670A (en) | 2008-07-23 | 2008-07-23 | Serial communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008190103A JP2010028670A (en) | 2008-07-23 | 2008-07-23 | Serial communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2010028670A JP2010028670A (en) | 2010-02-04 |
| JP2010028670A5 true JP2010028670A5 (en) | 2011-06-02 |
Family
ID=41734038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2008190103A Pending JP2010028670A (en) | 2008-07-23 | 2008-07-23 | Serial communication system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2010028670A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101588489B1 (en) * | 2012-10-29 | 2016-01-25 | 주식회사 엘지화학 | Apparatus for generating terminating resistance for differential input mode communication and differential input mode communication apparatus |
| WO2014170944A1 (en) * | 2013-04-15 | 2014-10-23 | 三菱電機株式会社 | Communication adapter |
| JP6482800B2 (en) * | 2014-09-17 | 2019-03-13 | パナソニック デバイスＳｕｎｘ株式会社 | Programmable controller and control method of programmable controller |
| JP6493958B2 (en) | 2014-11-05 | 2019-04-03 | 日本電気株式会社 | Hub device and control system |
| US10503134B2 (en) | 2016-07-29 | 2019-12-10 | Semiconductor Components Industries, Llc | Motor driver with multipurpose pin |
| US10084397B2 (en) | 2016-07-29 | 2018-09-25 | Semiconductor Components Industries, Llc | Motor driver with multipurpose pin |
| US10361838B2 (en) * | 2017-07-27 | 2019-07-23 | Texas Instruments Incorporated | Two-wire communication interface system |
| JP2020022016A (en) * | 2018-07-30 | 2020-02-06 | 株式会社リコー | Communication system, communication method, and image formation device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09270697A (en) * | 1996-04-02 | 1997-10-14 | Toshiba Corp | Termination resistor |
-
2008
- 2008-07-23 JP JP2008190103A patent/JP2010028670A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2010028670A5 (en) | ||
| JP4268139B2 (en) | Device for conductor termination of two-wire conductors | |
| JP5436985B2 (en) | High-speed digital galvanic isolator with built-in low-voltage differential signal interface | |
| US7696777B2 (en) | System for transmission line termination by signal cancellation | |
| JP2012507204A5 (en) | ||
| JP2014527322A5 (en) | ||
| JP5960993B2 (en) | Fieldbus interface circuit board supporting multiple interface types and terminations | |
| CN102157863A (en) | Controller area network active bus terminator | |
| JP2006246280A (en) | Apparatus for connecting branch cable, and branch cables | |
| TWI493346B (en) | High speed serial link systems | |
| TW201333715A (en) | Electric connection device | |
| US20160350252A1 (en) | Patch panel and distribution amplifier with configurable input/output module | |
| CN201114493Y (en) | Interface circuit and TV set with this circuit | |
| US11710885B2 (en) | Communication system and transmitter | |
| CN102420979A (en) | High-speed image transmission system for remote sensing camera | |
| US10187229B2 (en) | Bi-directional, full-duplex differential communication over a single conductor pair | |
| JP2007306267A (en) | Semiconductor transmitting and receiving device system, memory card, and memory card host equipment | |
| JP2021520130A (en) | Transmission of information signals on differential signal pairs | |
| CN203606826U (en) | RS232 switching circuit, looping-in communication circuit and multipoint control system | |
| JP2009130500A (en) | Multi-drop communication adapter, and multi-drop communicating system | |
| JP5233519B2 (en) | Electronics | |
| JP2003234681A (en) | Connector device and power line carrier communication method | |
| CN118113173A (en) | Touch display system for vehicle-mounted equipment, vehicle-mounted equipment mainboard and vehicle-mounted equipment | |
| JPH01114133A (en) | Signal transmission circuit | |
| US20080183939A1 (en) | Tapping systems and methods |