JPH11304535A - Encoder device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid mistakes in writing due to confusion with respect to a ROM and to improve reliability by diving the rewriteable area of the ROM provided for an encoder device into areas into which any data and data on performance settings can be each written. SOLUTION: An encoder device 20 to process an encoder signal 1a formed of, for example, angle information from an encoder 1 is provided with rewriteable ROM 3, and the ROM 3 is constituted of the first area 3A into which any data such as data on the characteristics of a servo motor to connect and of the second area 3B into which data on performance settings such as the resolution of he encoder 1 can be written. The areas 3A and 3B are each provided with the first and second dedicated lines 5 and 7 with independent transmit/receive circuits 4 and 6. Then any necessary data is first written via the first line 5, and the various performance settings of the encoder 1 are further written via the second line to complete function settings to an encoder circuit 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an encoder device, and more particularly, to a ROM area which is divided into a first area in which arbitrary data can be written and a second area in which performance settings can be written. The present invention relates to a novel improvement for preventing errors caused by confusion at the time of writing and reading, and improving the reliability of the encoder.

[0002]

2. Description of the Related Art Recently proposed encoder devices include an electrically rewritable ROM area provided in the encoder apparatus, an area in which arbitrary data can be written, and an encoder having various performances such as an encoder resolution and a communication method. It has been proposed to use the same area without dividing the area into which settings are written, and to write and read data from the outside to the ROM using a common line.

[0003]

Since the conventional encoder device is configured as described above, there are the following problems. That is, RO is performed using the same line.
Since the data writing of M and the writing of the performance setting were performed in common, the setting of the performance of the encoder may be erroneously rewritten at the time of writing the data. There was something.

The present invention has been made to solve the above-described problems. In particular, the ROM area is divided into a first area in which arbitrary data can be written and a second area in which performance settings can be written. It is an object of the present invention to provide an encoder device in which independent lines are provided in each area to prevent errors at the time of writing and reading, and to improve the reliability of the encoder.

[0005]

An encoder device according to the present invention is configured such that an electrically rewritable ROM is connected to an encoder circuit for processing an encoder signal indicating angle information, and that the ROM can be written from outside. In the encoder device capable of reading, the ROM
A first area in which arbitrary data can be written and a second area in which performance setting data including resolution and communication method can be written.
And the first and second areas are provided with independent first and second lines for writing and reading of the ROM, and the first line is provided with the encoder This is a configuration that is shared as a line for performing signal communication.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of an encoder device according to the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a well-known optical or magnetic mechanical encoder, and angular information (the number of rotations and the angle within one rotation) output from a detection unit (not shown) of the encoder 1. Encoder signal 1a comprising
Are input to an encoder circuit 2 for processing the encoder signal 1a.

The encoder circuit 2 is connected to a well-known electrically rewritable ROM 3.
Is a first area 3A in which arbitrary data (for example, characteristic data of a servomotor to be coupled, data error information, inertia data of a partner robot axis, etc.) can be written, a resolution of the encoder 1 and a communication method. And a second area 3B in which setting data of various performances can be written. In the first area 3A, a first line 5 having a first transmitting / receiving circuit 4 capable of externally performing writing and reading is provided independently and exclusively, and the second area 3A is provided.
In B, a second line 7 having a second transmission / reception circuit 6 that can perform writing and reading from the outside is provided independently and exclusively. Therefore, from the first line 5, the second line
It is configured such that writing and reading cannot be performed on the area 3B and on the first area 3A from the second line 7, respectively.

Next, the operation will be described. First, the first
Arbitrary data required via line 5 is stored in first area 3
A is written, and further, necessary performance settings of the encoder 1 are written via the second line 7, and the function setting for the encoder circuit 2 is completed. Using the encoder device 20 in which the function setting is completed, the rotation state of a robot or the like on which the encoder device 20 is installed is detected as an encoder signal 1a. At the same time, the encoder signal 1a is processed by the encoder circuit 2 and can be transmitted to an external control device (not shown) via the first line 5 or the second line 7.

[0009]

Since the encoder device according to the present invention is configured as described above, the following effects can be obtained. That is, the rewritable ROM connected to the encoder circuit is divided into a first area in which arbitrary data can be written and a second area in which various performance settings of the encoder can be written. Since the second line is provided exclusively for each of the lines, a write error due to confusion with the ROM can be avoided, and the reliability of the encoder device can be improved as compared with the related art.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an encoder device according to the present invention.

[Explanation of symbols]

 1a Encoder signal 2 Encoder circuit 3 ROM 3A First area 3B Second area 5 First line 7 Second line

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Yasushi Ono 1879 Okyu, Iida City, Nagano Prefecture Inside Tamagawa Seiki Co., Ltd.

Claims (2)

[Claims] 1. An electrically rewritable ROM (3) is connected to an encoder circuit (2) for processing an encoder signal (1a) indicating angle information, and the ROM (3) is externally written to the ROM (3). In the encoder device capable of reading data, the area of the ROM (3) is divided into a first area (3A) in which arbitrary data can be written and a second area (3B) in which performance setting data including resolution and communication method can be written. ), The first and second areas (3A, 3B) are provided with first and second lines (5, 7) for writing and reading the ROM (3) independently. An encoder device characterized by the above-mentioned. 2. The encoder device according to claim 1, wherein the first line (5) is shared as a line for communicating the encoder signal (1a).