JPH01194001A - Control transfer device for contents of memory at time of repair - Google Patents

Abstract

PURPOSE:To improve maintenance work by connecting a control transfer device, stopping the operation of a processor, storing all contents stored in a data storing RAM to a memory of the control transfer device through a released bus, and after repair, transferring the stored contents to a new storing RAM. CONSTITUTION:The title device is provided with a releasing means for stopping a processor 20 in a numerical control device 2 at the time of its repair and releasing a connected bus and a control means 1 provided with a processor 10 and a readable/writable data memory 13 to write the contents stored in a memory of the device 2 before repair and to read out the stored contents and transfer the read contents to a repaired memory 24. At the time of repairing the device 2, the processor 20 is stopped, the contents stored in the backed-up memory 24 are stored in a memory 13 of the control transfer device 1 through the released bus, and after repairing the device 2 the storage contents are transferred and restored to/by the memory of a replaced new printed circuit board. Consequently, the contents stored in the data storing RAM 24 can be restored by normally driving only a data bus, an address bus and an R/W control signal line.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a memory content transfer device during repair that temporarily stores and stores memory content stored in a numerical control device during maintenance.

(Prior art) When restoring a failure in a numerical control device equipped with an IC memory that stores various work information data, a printed circuit board for failure repair is prepared and replaced with the failed printed circuit board. This allows the numerical control device to be repaired.

At this time, if there is a battery-backed IC memory in the failed printed circuit board, the memory contents should be temporarily stored in another storage medium and saved before repair, and after replacing the printed circuit board with a new one, The numerical control device is restored by clearing the memory contents that were evacuated.

This battery-backed memory contains a large amount of important information such as system parameters, tool compensation data, programmable controller (PC) parameters, and cannibal programs, and these data can be transferred to the printed circuit board after replacement. Everything needs to be completely cleaned up and restored.

For this reason, data input/output means such as the R5-2320 interface of the numerical control device is used to temporarily store the data in a storage medium such as a paper tape or floppy disk, and then rewrite this data on a new printed circuit board after replacement. [Transferring via R5-2320 interface and restoring memory contents.

(Problem to be Solved by the Invention) Since the above restoration method uses the R3-232C interface function, the memory contents cannot be restored unless most of the functions of the numerical control device are in a state where they can operate normally. This problem has arisen.

For example, there are very few chances that the processor, ROM% RAM, R3-232C interface, keyboard interface, CRT interface, etc. are all operating normally when a numerical control device is repaired, and therefore in many cases This method requires manual input based on pre-recorded data, and has the drawback that if the records are old and the data has not been updated, the memory cannot be restored by anyone other than an expert.

The present invention was made in view of such problems,
The object of the present invention is to provide a memory content transfer device for transferring stored memory contents to a separate device for saving during maintenance of a numerical control device.

(Means for Solving the Problems) According to the present invention, when a numerical control device equipped with a battery-backed memory is repaired, the memory contents of the memory are temporarily transferred, and the storage contents are transferred to the memory of the numerical control device after the repair. A device for transferring memory contents at the time of repair that returns and restores the contents includes a release means for suspending the processor of the numerical control device at the time of repair and releasing the connected bus, and a separate processor and readable/writable memory. Transfer of memory contents during repair, comprising a control means for writing the memory contents of the memory of the numerical control device before repair via the released bus, and reading the memory contents and transferring them to the memory after repair. Equipment is provided.

(Function) When repairing a numerical control device, the processor is stopped and the freed bus is used to store the memory contents of the battery-backed memory in the memory of the transfer device. It has the effect of transferring and restoring the stored contents to the memory of the printed circuit board using the bus.

(Example) Next, an example of the present invention will be described in detail using the drawings.

The drawing is a block diagram of a configuration in which an embodiment of the present invention is connected to a numerical control device, in which 1 is a device for transferring memory contents when repairing the numerical control device, and 2 is a transfer device for transferring memory contents in the numerical control device (NC) to be repaired. It is for use.

First, in the NC2, 20 is a processor (CPU), 2
2 is a read-only memory (ROM), 23 is a random access memory (RAM) for work, 24 is a RAM for data storage, and a battery 25 is a backup power source for retaining the memory contents of the RAM 24.

26 is a keyboard interface serving as an interface for the keyboard 27, 28 is a CRT interface serving as an interface for the display device 29, and 30 is an R5-232C.
The servo control device 32, which serves as an interface for the Inter7 Eighth Ste I10 equipment 31, controls the motor 34 that drives the machine tool via the servo amplifier 33.
A feedback circuit (FB) is connected from the motor 34 to the servo control device 32.

A bus 36 connects the CPU 20 with the above-mentioned various memories and various interfaces, and transmits and receives addresses, data, read/write (R/W) signals, and the like. 37 is a signal line that sends a signal from the power-on reset 21 to the transfer device 1, 38 is a control line that sends a HALT signal to the CPU 20, and a voltage of +5 Vl is applied to the CPU 20 via a resistor R. In the "1" state where ten voltages are applied to the CPU 20, the CPU 20 performs normal processor operation and operates to access the above-mentioned memory and interface connected via the bus 36.
When the control line 38 is grounded and becomes "0", CP
U20 is configured to suspend processor operation and free bus 36.

Next, the transfer device 1 uses the connector 15 when repairing the failure of the NC2.
Connect to the connector 35 of NC2 to connect the RAM2
The memory contents stored in NC 4 are temporarily saved and transferred, and after the repair of NC 2 is completed, the memory contents are returned to NC 2 and restored. 10 is a CPU, which is a processor that controls temporary saving and restoration of memory contents; 11 is a ROM, which is a memory that stores the program of CPU10;
A RAM 2 is a work memory for the CPU 10, and a temporary memory 13 is a battery-backed RAM or an electrically erasable PROM. Reference numeral 14 denotes an interface, which has a button switch A for saving memory contents and a button switch B for restoring them, which are operated when saving and restoring the contents of the RAM 24 for data storage, and L indicates these. This is a lamp that indicates when the unit is in operation.

Note that the CPU 10 and various elements are connected to each other by a bus 16.

Next, the operation of this embodiment configured as described above will be explained.

According to Michitomi, the illustrated NC2 is separated from the transfer device 1 by the connector 35, and in this state, ten voltages are applied to the control line 38 via the resistor R, so it becomes "1", and the NC2
When the power is turned on and the power-on reset 21 is released, the CPU 20 accesses various memories and ink faces connected via the bus 36 and operates as a numerical control device.

If the printed circuit board of the control section of the NC 2 breaks down and needs to be replaced with a new printed circuit board, first turn off the power and connect the transfer device 1 to the connector 35 via the connector 15 as shown in the figure. .

Next, when power is supplied to the NC 2, the control line 38 becomes "0" because it is grounded on the connector 15 side, and even after the power-on reset 21 is canceled, the CPU 20 is suspended and the bus 36 is released. and bus 36 is connector 15
The CPU 10 is connected to the CPU 10 via a bus 16 to transmit and receive control signals therefrom.

When the evacuation button A of the transfer device 1 is operated in this state, the CPU 10 reads out the battery-backed memory contents of the RAM 24 for data storage one address at a time, stores it in the - hour storage memory 13, and also Lights up L to indicate that the evacuation operation is in progress. Then, the memory contents of the entire area are stored from RAM 24 to temporary storage memory 1.
3, the lamp L goes out, indicating the end of the B tube.

When the transfer is completed, the maintenance worker temporarily turns off the power to the NC2, replaces the printed circuit board of the control unit with a new printed circuit board, connects the transfer device 1, and turns on the power to the NC2.

In this case as well, since the control line 38 is grounded on the connector 15 side, the CPU 20 is suspended and the various elements connected to the bus 36 are controlled by the CPU10. Then, when the restoration button switch B of the transfer device 1 is operated,
The CPU 20 issues a control command to read out the memory contents of the temporary memory 13 one address at a time and store it in a new RAM 24, and lights up the lamp L to indicate that the restoration operation is in progress. Then, when all the memory contents are transferred from the temporary storage memory 13 to the RAM 24 and restored, the lamp L is turned off.

Next, the maintenance worker turns off the power to NC2 and releases the connection between connector 35 and connector 15.
The control line 38 to the PU 20 is connected to the 10 power supply via the resistor R, and becomes "1", and after the NC 2 is powered on, the CPU 20
will result in normal processor operation.

Although the present invention has been described above using the above-mentioned embodiment, various modifications can be made within the scope of the present invention, and these are not excluded from the scope of the present invention.

(Effects of the Invention) According to the present invention, when repairing an NC, the transfer device is connected,
By stopping the operation of the NC's processor, the free bus is used to transfer data to the memory of the transfer device to the RAM for data storage of the NC.
All the memory contents of the NC are stored, and after the NC is repaired, the stored memory contents are transferred to a new storage RAM and restored, so data can be transferred without using the R3-232C interface of the NC like in the past. Therefore, if only the data bus, address bus, and R/W control signal lines operate normally, the contents of the data storage RAM of the NC can be fully restored.

Therefore, compared to the conventional system in which the memory contents cannot be restored unless most of the components of the NC are normal, a significant improvement in maintenance work can be obtained.

[Brief explanation of the drawing]

The drawing is a configuration block diagram in which an embodiment of the present invention and a numerical control device are connected. 1... Transfer device, 2... Numerical control device, 10...
Processor, 13... - Time storage memory, 20...
Processor, 24... RAM for data storage, 25.
...Battery, 36...Bus, 38...Control line.

Claims (4)

[Claims] (1) When repairing a numerical control device equipped with battery-backed memory, the memory contents of the memory are temporarily transferred, and the memory contents are restored to the memory of the numerical control device after repair. The transfer device includes a release means for halting the processor of the numerical control device during repair and releasing the connected bus, and a separate processor and readable/writable memory. 1. A memory content transfer device during repair, comprising a control means for writing the memory content of a numerical control device, reading the memory content, and transferring the memory content to the memory after repair. (2) The device for transferring memory contents during repair according to claim 1, wherein the release means grounds a halt signal of a processor of the numerical control device to halt the operation of the processor. (3) The device for transferring memory contents at the time of repair according to claim (1), wherein the readable/writable memory uses a battery-backed RAM. (4) The device for transferring memory contents at the time of repair according to claim (1), wherein the readable/writable memory uses an electrically erasable PROM.