JPH04270376A - Input/output signal state display system - Google Patents

Abstract

PURPOSE:To constitute the system so that what ordinal number of segment train is turned on and turned off can be observed visually and easily. CONSTITUTION:Whether an input of an input signal and an output of an output signal exist or not is displayed by a turn-on/turn-off type in each digit of an indicator 9 allocated in advance in accordance with each input/output signal, and also, a decimal point display 13d of each digit is executed. The decimal point display 13d becomes a delimiter of each digit, and based on this decimal point display 13d of each digit, what ordinal number of digit of a segment train 13ss is turned on and turned off can be observed visually and easily.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an input/output signal status display system, and more particularly to a display system that monitors the presence or absence of input/output signals using a segment type LED display.

0002

[Prior Art] Some servo motor drivers are equipped with a multi-digit segment type LED display to display the current speed, peak torque, etc. of the servo motor. In addition to displaying the current speed and peak torque of the servo motor, LED displays are assigned in advance according to each input/output signal to monitor the presence or absence of external signals input to or output from the driver. It is thought that each digit of the device will be displayed in an on/off format.

[0003] For example, in a 7-segment LED display, the on/off display in each digit of the LED display according to the presence/absence of an external signal is performed on the right and left vertical lines of each digit. The two segment columns of the array are respectively assigned to individual input/output signals, and each segment column is configured to display the presence/absence status of each input/output signal. Therefore 6 digit LED
The display can simultaneously display the presence/absence status of up to 12 types of input/output signals.

0004

In the method for displaying the presence/absence of input/output signals as described above, only the vertical segment rows of each digit of the LED display are simply turned on and off; Therefore, there is a problem in that it is difficult to visually confirm which segment column corresponds to which input/output signal, in other words, which segment column is turned on or off.

The present invention has been made by focusing on the above-mentioned problems in the conventional method of displaying the presence/absence of input/output signals. It is an object of the present invention to provide an improved input/output signal status display system that is easy to use.

[0006]

[Means for Solving the Problems] According to the present invention, the above-mentioned object is to provide an input/output signal status display system using a multi-digit display capable of selectively displaying a decimal point for each digit.
It is characterized by displaying the presence or absence of input signal input and output signal output on each digit of the display device assigned in advance according to each input/output signal in an on/off format, and also displaying a decimal point for each digit. This is accomplished by an input/output signal status display system.

[0007]

[Operation] According to the above-mentioned configuration, the decimal point of each digit is displayed, which serves as a punctuation mark for each digit, and it can be visually confirmed which digit is lit or turned off based on the decimal point display of each digit. become more susceptible to

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 shows an embodiment in which the input/output signal status display system according to the present invention is applied to a servo motor driver.

[0010] The servo motor driver is designated as a whole by reference numeral 1 in the figure, and is adapted to control the operation of the servo motor 2.

The servo motor driver 1 includes a CPU 3, a ROM 4 that stores system programs, etc., a RAM 5 that stores data, an I/O port 6, an input/output signal detection circuit 7, a display circuit 8, It has a display 9 and a display mode changeover switch 10, and is connected to a positioning device 12 through a host I/F connector 11.

As shown in FIG. 2, the display 9 is composed of a plurality of digits, in this embodiment, six digits, in other words, six seven-segment type LED display elements 13.
Each 7-segment type LED display element 13 has a decimal point display section 13 in addition to the seven segments 13a for displaying numbers.
It has d.

The display mode changeover switch 10 is connected to the display 9
In this embodiment, the current speed display mode of the servo motor 2, the peak torque display mode of the servo motor 2, and the input/output signal status display mode are selected. ing. Note that FIG. 3 shows a display example in the current speed display mode, and FIG. 4 shows a display example in the peak torque display mode.

The servo motor driver 1 uses an input/output signal detection circuit 7 to output external output signals to the positioning device 12 via the upper I/F connector 11 and to the upper I/F.
An external input signal from the positioning device 12 via the connector 11 is detected, this detection signal is judged by the CPU 3, and if the input/output signal status display mode is selected by the display mode changeover switch 10, the external input signal is The presence or absence of input and external output signals is determined as shown in FIG.
Lighting of two vertically arranged segment rows 13ss on the right and left sides of the 7-segment LED display element 13 for each digit of the display 9, which are allocated in advance according to each external input/output signal,
Indicates when the light is turned off, as well as a 7-segment LED for each digit.
The decimal point display section 13d of the display element 13 is all turned on.

In this case, for example, as an output signal, a is a positioning completion signal, b is a Z-phase input signal, as an input signal, A is an emergency stop signal, B is a deviation counter reset signal,
C is home alignment signal, D is pulse command invalid signal, E is R
Each is assigned to the UM signal.

FIG. 6 shows a processing routine for displaying on the display 9. As shown in FIG. This processing routine is repeatedly executed at predetermined time intervals, and first, it is determined what display mode is selected by the display mode changeover switch 10 (
Step 10). When the display mode is the current speed display mode, current speed display data is created (step 20), and when the display mode is the peak torque display mode, peak torque display data is created (step 30).

On the other hand, if the input/output signal status display mode is selected, the segment type LED display element 13 of each digit
All decimal point display sections 13d are unconditionally turned on (step 40), and then each segment column 13s of the 7-segment LED display element 13 for each digit of the display 9 is turned on according to the input/output state of each external input/output signal. The content of the display data for selectively lighting up is rewritten, that is, changed (step 42). This is done for all the signals, and when all the signals have been scanned (step 44), the display data is output to the display 9 (step 50). As a result, the segment rows 13ss of the 7-segment LED display element 13 of each digit of the display 9 are selectively lit according to the input/output status of each external input/output signal, and this lighting indicates that the external input/output signal is in the on state. Something becomes visible.

In this case, since all the decimal point display sections 13d of the 7-segment LED display elements 13 for each digit of the display 9 are lit, this serves as a punctuation mark for each digit, and the decimal point display sections 13d for each digit are lit. Based on the lighting display, it becomes easier to visually recognize which digit of the segment string 13ss is lit or turned off.

In the above-mentioned embodiment, a 7-segment type LED display element was used as the display, but the present invention is not limited to this, and the display has a 7-segment LED display element for each digit. As long as the decimal point can be selectively displayed, it may be constructed of a 14-segment type LED display element or any other display element.

[0020]

Effects of the Invention As understood from the above explanation, according to the input/output signal status display system according to the present invention, the decimal point of each digit is displayed, and this serves as a punctuation mark for each digit. Based on the decimal point display, it becomes easier to visually recognize which digit of the segment string is turned on or off, and the display contents are less likely to be misread.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment in which an input/output signal status display system according to the present invention is applied to a servo motor driver.

FIG. 2 is a front view showing an example of a display device used in the input/output signal status display system according to the present invention.

FIG. 3 is a front view of the display showing an example of a display in the current speed display mode.

FIG. 4 is a front view of the display showing an example of display in peak torque display mode.

FIG. 5 is a front view of the display showing an example of display in input/output signal status display mode.

FIG. 6 is a flowchart showing an embodiment of a display processing routine by a display device in the input/output signal status display system according to the present invention.

[Explanation of symbols]

1 Servo motor driver 2
Servo motor 3 CPU 4 ROM 5 RAM 6 I/O port 7 Input/output signal detection circuit 8 Display circuit 9 Display 10 Display mode changeover switch 11
Upper I/F connector 12 Positioning device 13 7-segment LED display element 13s
Segment 13d Decimal point display section 13ss Segment column

Claims (1)

[Claims] Claim 1: In an input/output signal status display system using a multi-digit display capable of selectively displaying a decimal point for each digit, the presence/absence of input signal input and output signal output is indicated for each input/output signal. Turn on each digit of the display assigned in advance,
An input/output signal status display system characterized by displaying in an off format and also displaying a decimal point for each digit.