Fanuc Corporation

Fujitsu Fanuc Limited

Nobuyuki Kiya

Ryoichiro Nozawa

Motoaki Yoshino

Yoshiharu Saiki

Kimio Maeda

Keiji Sakamoto

Shuji Toriyama

Hideaki Kawamura

Kunio Tanaka

Noriaki Neko

Yoshiaki Ikeda

Yasushi Onishi

Kunihiko Murakami

Tsuyoshi Nagamine

Shoichi Otsuka

Akio Ichimura

A control system for a programmable control device (10) executing a user program cyclically, wherein a data bit is provided in a memory space which can be accessed by a user program, the data bit is made 'ON' in an operation mode and made 'OFF' in a stop mode. The data bit is programmed with an AND condition for an output signal (Q1) to be made 'OFF' in the stop mode, and the operation mode is shifted to the stop mode only after having made the data bit 'OFF' and having executed the user program for one or more scans.

Control system for programmable control device

Numerical control device for transfer machines

Method for selecting inputs for a PC in which a ladder program is

High speed programmable controller for executing an instruction formed

Injection control apparatus for injection molding machine

Parameter initializing method for a programmable machine controller

Numerical control method for machining an arc on the curved surface of a

An injection molding machine wherein the values of variables for the current and several preceding molding cycles are displayed simultaneously, so as to perform process monitoring. Detection values of the variables in the current molding cycle are stored in a current value memory section of a memory (14). Every time a molding cycle ends, a CPU (11) transfers data from the current value memory section and past variable memory sections (which store the detection values of the respective variables of several preceding steps), to the past variable memory sections for the next preceding cycles. As a result the stored data of the memory sections is sequentially updated. The updated data and the current data are read out and displayed on a display unit (18).

Injection molding machine which allows process monitoring

Signal tracing control system for PMC

Numerical control method

In a numerical control system for a machine tool using a general-purpose motor (11) in place of at least one of servo motors, a current position of a spindle (10) driven by the general-purpose motor (11) is detected (14, 9) and is compared with a position designated by a numerical control program. When the current position approaches the position designated by the numerical control program, brake signals (MBR, BR) are generated to brake the general-purpose motor (11) or the like, and a rotation signal (MCW, MCCW) of the general-purpose motor (11) is disabled, thereby stopping the general-purpose motor (11) so as to cause the spindle (10) to stop at the position designated by the numerical control program.

Numerical control system

Method of restoring a rotary axis to a reference point

Numerical control apparatus having overtravel check function

A numerical control system has a tool holder which supports tools . . . attached to at least two intersecting sides, preferably three sides of a rectangular shape. The tool holder is movable along plural axes, e.g., X and Y-axis directions. A memory circuit is provided for storing the positional data regarding the tips of the tools and a workpiece diameter when the tool holder is predetermined reference points. When a workpiece is to be machined by a selected tool, the data regarding the selected tool and the workpiece diameter are called from the memory circuit, the distance from the tool tip to the outer periphery of the workpiece is computed, and the tip of the tool is moved to the outer periphery of the workpiece. With this arrangement, tools can be changed quickly.

Data transmission method and apparatus therefor

Growing community of inventors

Hachioji, Japan

Nobuyuki Kiya