摘要:
A programmable sequence controller which enables display of the contents of a storage means for storing input and output data to and from a machine, and which permits numerical values to be set in the storage device from an external unit. The programmable sequence controller utilizes a sending and receiving unit for an exchange of commands and other data with a numerical control device in order to transfer display content and numerical values which have been set. This allows the contents to be displayed on display means provided in the numerical control device, and permits the setting of numerical values which are entered from a data setting means provided in the numerical control device.
摘要:
A programmable sequence controller which need not be equipped with a tape reader for reading a paper tape bearing a punched sequence program or the like. A prepared sequence program or the like is punched in a paper tape in accordance with the standards of a paper tape reader which is provided in a numerical control device, and then is transferred from the numerical control device to a random access memory in the programmable sequence controller. The sequence program is read from the random access memory to permit the execution of sequential operations by processing the program.
摘要:
A method of preparing and executing a sequence program for effecting the sequence control of a sequence controller for a machine tool by executing a subroutine program. A sequence diagram is prepared, which diagram expresses a function command for a subroutine as data divided into control conditions and parameters. From the sequence diagram a sequence program is prepared, which program includes a command for reading data indicative of a control condition, and parameter data of which a subroutine is informed. The sequence program so prepared is then executed.
摘要:
A numerically controlled machine tool is equipped with a programmable sequence controller having a first storage area capable of storing operation commands, and a second storage area capable of storing a duplicate of the data planted in the first storage area without erasing the planted data. An operation command, when sent from a numerical control device to the machine tool, is stored in the first storage area and then, when the machine tool has completed the instructed operation, is read out from the first storage area and stored in the second storage area, this operation being repeated as each new command is issued. When electric power is connected to the machine tool, the data stored in the first and second storage areas is compared, an alarm being generated when the two sets of data do not agree.
摘要:
A control device for indexing a stepping rotatable member, such as a turret of an NC lathe, comprising a means for generating code signals which generates different code signals at every stop position of the stepping rotatable member (TR), a means for generating strobe signals which generates the strobe signals used for reading said code signals at every stop position of the stepping rotatable member, a first comparator circuit which compares an indexing command value and the code signal, a counter which is preset by the code signal and which counts the strobe signal, and a second comparator circuit which compares a count value of the counter and the code signal value, the control device for indexing a stepping rotatable member outputs an end of indexing signal when both the comparator circuits detect coincidences.
摘要:
A three-dimensional tracer control system which is provided with an integration circuit for integrating the difference between a Z-axis direction displacement signal and a reference displacement signal and an adder for adding together the above-mentioned difference and the output from the integration circuit. The trace velocity in the Z-axis direction is controlled by the output from the adder, by which it is possible to perform tracing, with the Z-axis direction displacement signal and the reference displacement signal held nearly equal to each other; consequently, machining accuracy is increased.
摘要:
In a tracer control system, parameters necessary for a trace operation, such as, for example, tracer head reference displacement value, trace axis, trace direction, pick feed value, and various limits, are set in combination for each trace mode. A character display is provided for displaying various parameters, so that it is easy to confirm each of the required parameters corresponding to a selected trace mode, and check whether the setting of all required parameters has been completed or not and whether the value of each set parameter is the desired one or not.
摘要:
A power source device for a bubble memory unit, wherein there is supplied a first DC voltage E.sub.c which is applied to control circuitry for controlling the reading and writing of data, a second DC voltage signal E.sub.d which is applied to drive circuitry for driving a bubble memory element, and a memory signal M.sub.e which enables data to be written in or read from the bubble memory element, the signals E.sub.c, E.sub.d and M.sub.e being made to rise and fall according to a prescribed sequence as a commercial power supply is connected and disconnected. The power source device includes first and second DC power source circuits, a comparator circuit for comparing the magnitude of the first DC voltage E.sub.c with a reference level V.sub.M having a value greater than an allowable lower limit value, and a delay circuit. The second DC power source circuit is actuated following a prescribed time delay which begins when the value of signal E.sub.c surpasses the reference level V.sub.M at the time that the commercial power supply is connected, and the memory enable signal M.sub.e is produced after the second DC power source circuit has been actuated. The memory enable signal M.sub.e is made to vanish when the magnitude of signal E.sub.c drops below the reference potential V.sub.m at the time that the commercial power supply is disconnected, the second DC power source circuit being rendered non-operational following a prescribed time delay.
摘要:
In a system which performs tracer control by calculating the direction and velocity of tracing using signals from a tracer head tracing the model surface, there are provided an input unit for entering data defining the tracing operation, a memory for storing the data and a processor for reading out the data from the memory to control respective parts of a control device. Of the data defining the tracing operation, stored in the memory, data concerning the reference displacement of the tracer head is read out by the processor to change the reference displacement for each profile modeling operation, thereby automatically performing repetitive tracing.
摘要:
A method and system for rewriting data in a non-volatile memory in which the rewriting of one access unit of stored data is executed by erase and write cycles, the stored data being protected in the event of an interruption in electric power. In rewriting into second data the first data which is stored in a data storage area of the non-volatile memory, either the first or the second data is stored in a save area of the non-volatile memory, after which the first data in the data storage area is erased, followed by the writing of the second data in the data storage region to complete the rewrite operation.