ENCODER AND COMMUNICATION CONTROL METHOD OF ENCODER

• Main Author: MOMOSE SHOGO
• Format: Patent
• Language: English; Japanese
• Published: 07.04.2022
• Subjects: ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; MEASURING; MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR; PHYSICS; TARIFF METERING APPARATUS; TESTING; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

To provide an encoder capable of communication with an external apparatus such as a computer using a communication line connecting the encoder and a control device.SOLUTION: An encoder 1 includes a communication section 12 capable of communication with first speed or second speed through a communication line 2. The encoder 1 also performs two-way communication with the first speed to a control device 3 connected through the communication line 2 and transmits position information P to the control device 3 each time receiving an inquiry command O1 from the control device 3 in a first cycle T1. The communication section 12 includes a communication speed setting section 16 that receives a predetermined control signal S1 a plurality of times in a second cycle T2 longer than the first cycle T1 when communication speed of communication is set to the first speed, and switches the communication speed to the second speed when the control signal S1 is not received at a first time point of elapse of the second cycle T2 and predetermined time from last reception of the control signal S1.SELECTED DRAWING: Figure 1 【課題】エンコーダと制御装置とを接続する通信線を利用してコンピュータなどの外部の機器との通信を可能とするエンコーダを提供すること。【解決手段】エンコーダ１は、通信線２を介して第１速度または第２速度の通信が可能な通信部１２を備える。また、エンコーダ１は、通信線２を介して接続された制御装置３との間で第１速度の双方向通信を行い、第１周期Ｔ１で制御装置３からの問い合わせ指令Ｏ１を受信する毎に当該制御装置３に位置情報Ｐを送信する。通信部１２は、通信の通信速度が第１速度に設定されているときに第１周期Ｔ１よりも長い第２周期Ｔ２で所定の制御信号Ｓ１を複数回受信し、最後に制御信号Ｓ１を受信してから第２周期Ｔ２と所定時間とが経過した第１時点で制御信号Ｓ１を受信しない場合に、通信速度を第２速度に切り換える通信速度設定部１６を備える。【選択図】図１