Fanuc Corporation

Other

Renesas Electronics Corporation

Yasushi Onishi

Kunio Tanaka

Takashi Takegahara

Masaki Seki

Tetsuo Hishikawa

Yoshiharu Saiki

Hajimu Kishi

Kentaro Fujibayashi

Nobuyuki Kiya

Kazuhiro Sakashita

Kazuo Sato

Mitsuru Mochizuki

Takashi Idei

Osamu Hosotani

Takehiro Yamaguchi

Keisuke Tsujikawa

Toshiyuki Matsuo

Masashi Hakoshima

Koji Sato

Hajimu Kish

Kazuhiro Shimakawa

Yoshihiro Itsubo

Tetsuo Fanuc Manshonharimomi Hishikawa

Keisuke Fanuc Dai3virakaramatsu Tsujikawa

Toshiyuki Room 8-208 Fanuc Matsuo

A tuner receives broadcast data on specified channels. A channel search unit controls the tuner to search for available channels, and creates a channel map representing the available channels and a selection order thereof. A channel order setting unit changes setting about enabling/disabling of the selection and/or the selection order of the channels in the channel map. An operation input unit accepts a channel selecting operation of a user. When the user performs an operation for channel forward selection or channel reverse selection through the operation input unit, a channel switching unit changes the selection of the channel according to the channel map and causes the tuner to receive the broadcast data on the selected channel.

Broadcast receiving device and program selecting method

Replacement of a signal address referred to in a sequence program is carried out by storing in advance, before-after replacement information which specifies the relationship between signal addresses before replacement and signal addresses after replacement in a format with a specifying of range. Based on the stored before-after replacement information, all the signal addresses to be replaced are searched for in the editing target sequence program or replacement target symbol information. Replacement of a searched signal address with a corresponding after-replacement signal address is executed in accordance with the before-after replacement information.

Sequence program editing apparatus

A numerical controller is capable of foreseeing the occurrence of interference during operation of a machine and securely preventing the interference. An advanced position calculating section determines advanced time for the next interference check, based on an end time point of an interference check by an interference checking device and the sum of a time required for the interference check, a time required for communication, a time required for decelerating and stopping a movable part, and a predetermined float. If an interference checking device detects interference, the interference checking device delivers an axis stop signal the movable part.

Numerical controller

A servomotor in a numerical controller is controlled by automatically switching to either pressure control or position control in association with the command which is smaller from among a command obtained by performing pressure feedback control and a command obtained by performing position feedback control. When switched to pressure control while moving according to a movement command, the output of the movement command is terminated halfway, and the command in the next block is executed, and pressure control of the next command is immediately started. As a result, a wasteful time is eliminated, and a cycle time of the operation can be shortened.

When a servomotor (control axis) is coasting and rotating in a servo-off state in which no current is applied to the servomotor, this servo-off state is switched over to a servo-on state in which current is applied to the servomotor, and a position control and a speed control are started. An actual speed in servo-on state is obtained in speed obtaining means by a position/speed detector. Position command means obtains a command movement amount using the actual speed as an initial speed. A position deviation amount corresponding to the actual speed is calculated, a command movement amount, a position deviation amount, and a position deviation amount remaining in a position deviation counter in servo-on state with the sign thereof reversed are added to each other as a command amount to the position deviation counter.

When a manufacturer or a user desires to adjust a Braun tube, it is required to display a test pattern satisfying setting conditions of display modes on the Braun tube. To set the display modes of the test pattern, a plurality of horizontal synchronizing signals and a vertical synchronizing signal are generated by a timer circuit for each field. Also, display modes (for example, shape, position, size, color and luminance) of a type of characters having the same shape are set in an OSD circuit to set the display modes of the test pattern composed of the characters having the same shape. Thereafter, a composite video signal of the test pattern satisfying the display modes is produced on the basis of the horizontal synchronizing signals and the vertical synchronizing signal in the OSD circuit, and the test pattern is displayed on the Braun tube according to the composite video signal. Accordingly, because the composite video signal of the test pattern satisfying the display modes can be produced without using any private circuit, the video signal producing apparatus can be produced in a small size and at a low cost.

Video signal producing apparatus and video signal producing method

A memory (,) stores a sequence program (,) expressed in a step format. Execution control device (,) executes this sequence program (,), thereby carrying out operation control on the side of a machine (,). Display control device (,) displays the sequence program (,) on a display screen of a display device (,), and displays various commands inputted by means of a keyboard (,), in the form of menus. An operator specifies a step by way of the keyboard (,), and also commands to interrupt the execution of the sequence program by way of the keyboard (,). Thereupon, execution stop control device (,) stops the execution of the sequence program in the specified step.

Sequence program execution control system

A machining load monitoring system to monitor a machining condition by comparing sampled data of a machining load in a trial cutting process and measured data thereof in an actual cutting process with each other precisely with respect to time. An NC command executing unit (1) executes NC commands, and updates a block number and an execution mode in an executed state table (2) when the execution of NC commands of one block is finished. A load monitoring unit (4) compares sampled data, stored in a sampled data table (3), of a machining load in a trial cutting process with measured data thereof in an actual cutting process at given intervals of time. When the block number in the executed state table (2) is updated, sampled data of a new block number are read from the sampled data table (3). The sampled data in the trial cutting process and the measured data in the actual cutting process are compared with each other at predetermined times, and an alarm is issued when the difference between the compared data reaches or exceeds a predetermined level.

Machining load monitoring system

In a sequence program display apparatus capable of displaying related data related to desired signals and command in debugging by simple operation, when the address of related data relating to respective signals and commands is input together with a sequence program, the input sequence program and address of the related data are stored in a program/address storing means. Program execution means controls the operation of a machine tool by executing the input sequence program. On the other hand, when display instruction means instructs to display how the particular signals and commands of the sequence program being executed are executed, executed state display means displays how the signals and commands instructed to be displayed are executed and how related data relating to the signals and commands is executed on the same screen in a display unit.

Sequence program display apparatus

System for debugging sequence program

A method of monitoring machining load on a numerically controlled machine tool in such a way that incorrect judgment due to variations in machining load which are caused according to the machining conditions is made less frequent. The method is started by performing plural trial cutting operations. A signal indicating the machining load during these trial cutting operations is sampled and thus, sampling data is obtained. Reference data about the machining load and its variance are calculated from the sampling data and loaded in a reference data table. A threshold value according to variations in the sampling data is established, using the value of the variance. A load monitor means compares the reference data with data about the machining load obtained from actual measurements whenever each interval of time elapses. A decision is made as to whether the difference exceeds the threshold value. In this way, the machining load is monitored.

Method of monitoring machining load using variable alarm threshold

A sequence program edit system expressed by a sequential function chart (SFC) system. When a graphic input device inputs a graphic element of a flowchart to respective blocks formed by partitioning a display screen into rows and columns, an input graphic display device displays the inputted graphic element on the display screen. On the other hand, when an insertion command is issued to an arbitrary block on the display screen by an insertion command device through a cursor, an insertion and display device automatically inserts and displays graphic elements of vertical connector lines on respective blocks in the same row as that of the arbitrary block to which the insertion command has been issued.

Sequence program edit system for inserting additional graphic elements

A symbol definition system for a programmable machine controller (PMC) for defining symbols (signal names) in a sequence program of the PMC. Since the function of the signals between the PMC and a numerical control apparatus is fixed, a first group of symbols is supplied to a program creation unit as system data, and therefore, when a sequence program is created, the first group of symbols need not be defined. Further, the first group of symbols is transferred to the PMC together with the sequence program and used for editing and maintenance.

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Minamitsuru, Japan

Yasushi Onishi