JPH0635552Y2 - Function setting type electronic counter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention provides a function setting type electronic counter which can be used by selecting one of a plurality of functions by mounting one of a plurality of function specifying modules. Regarding

[Conventional technology]

For example, an electronic counter (1) as shown in FIG. 9 and FIG. 10 counts pulse signals input from input terminals (2) (2) ... The count value is displayed on the numeral display (4). When the count value reaches the preset value set by the operation switches (5) (5) ..., This electronic counter (1) generates a count-up output to the output terminals (6) (6) ... on the rear surface of the main body.

Such electronic counters (1) are manufactured in various types having different input formats and output formats according to the purpose of use.

The categories of this product are listed below by dividing them into input format and output format.

As the input format, only add by pulse,
Pulse subtraction only, two input terminals, pulse input from one terminal to add, pulse input from the other terminal to subtract, two terminals with phase difference simultaneously input For adding or subtracting a pulse depending on the direction of the phase difference, having a count prohibition input together, having an addition and subtraction switching input, counting speed (pulse frequency to be counted) switching function There are things that have.

The output types are self-holding output, single-shot output that outputs only for a fixed time, IC type (normally open and normally closed interlocking contact) relay output, and IA type (parallel / independent contact). There are relay output and transistor output.

The electronic counter ordered by the user is a combination of the above-mentioned input and output methods, and the types are extremely large.

[Problems to be solved by the device]

As described above, it is extremely complicated to separately manufacture, manage, and sell various types of electronic counters, resulting in a large manufacturing cost and distribution cost.

For this reason, the electronic counter should have all of the above functions,
It is also conceivable that one of the necessary functions can be selected by using the changeover switch at the time of use.

However, if it is made multi-functional as described above and is selected by a large number of changeover switches, it becomes extremely difficult for the user to select the function by reading the instruction manual etc., the installation work becomes complicated, and the setting error is It is easy to occur.

Therefore, an object of the present invention is to provide a plurality of types of dedicated electronic counters having a specific function by setting the functions in one type of electronic counter.

[Means for Solving the Problems]

The function setting type electronic counter provided by the present invention includes a plurality of input / output terminals 12 _{1 to} 12 ₄ , 15 ₁ to 15 ₄ and a counter circuit 1
3a and a numerical display 17 for the counter value, and the input terminal 12
_In an electronic counter that counts the pulses input from _{1 to} 12 ₄ and outputs when it reaches a preset value, the counter circuit 13a and the functional circuit (a) for switching the input format and the output format of the counter circuit 13a ), A function specifying module 24 that defines the function selection information of the input format and the output format depending on the presence or absence of a short circuit at the terminal 24a, and a mounting portion 23 for mounting the function specifying module 14 through the terminal 24a. And reading the selection information of the function designation module 24 from the mounting portion 23, the above functional circuit (a)
The functional circuit (a) and (b) is provided with a function setting unit 16a for initializing (b), and the input circuits of the functional circuits (b) and (b) are only for adding pulses, only for subtracting pulses, and two input terminals. One that adds with the pulse input from one side, subtracts the pulse input from the other, one that adds or subtracts the pulses input simultaneously with a phase difference from the two terminals according to the direction of the phase difference, Either one with a count prohibition input, one with addition and subtraction switching inputs, one with a counting speed (counting target pulse frequency) switching function, or a combination of these can be selected. , As the output format,
It is characterized in that self-holding output and single shot output that outputs only for a fixed time can be selected.

[Action]

Attach the function designation module to the electronic counter's attachment part,
When the electronic counter is powered on, the function setting section reads the function selection information through the mounting section. Then, the function selected in the functional circuit is initialized. As a result, the electronic counter becomes a dedicated electronic counter specified by the designated function, that is, the input format and the output format.

〔Example〕

 The present invention will be described below with reference to examples.

FIG. 1 shows the overall configuration of a function setting type electronic counter (10) of the present invention, and (11) is an input terminal (12 ₁ ) (12 ₂ ) (12 ₃ ).
(12 ₄₎ is connected to the input signal processing circuit, constitute a (13) is a gate array, a counter circuit (13a) and a function circuit having a selection of available multiple functions (A) and (B) or the like . (14) is an output processing circuit, which is composed of a relay or the like, and outputs to the output terminals (15 ₁ ) (15 ₂ ). (16) is CP
At U, the functional circuit inside the gate array (13) (a)
The function setting section (16a) for setting the function of (b) and the display control section (16b) for performing display control are configured. (16 _E )
Is a power-on reset circuit that generates a reset signal when the power is turned on. (17) is a numerical display, 7 segments
A 7-segment decoder (17a) that is composed of LEDs and receives numerical data from the display control unit (16b) of the CPU (16),
Dynamic display by digit driver (17b).
(18) is the operation status display section, and the count-up display LED (1
9 ₁ ) (19 ₂ ) and preset operation display LED (20 ₁ ) (20 ₂ )
It consists of ...

(21 ₁ ) (21 ₂ ) ... (21 ₈ ) are key switches provided on the display / operation panel (22) shown in FIG. 2, and (21 ₁ ) and (21 ₂ ) are for increment and decrement. Data key, (21 ₃ ) digit shift key, (21 ₄ ) count value initial setting key, (21 ₅ ) registration key, (21 ₆ ) (21 ₇ ) first and second preset start keys , (21 ₈₎ is a reset key.

Reference numeral (23) is a mounting portion for mounting the function specifying module (24). For example, as shown in FIG. 3, pin contacts are provided inside the storage hole (25a) provided at the center of the terminal block (25) on the back of the electronic counter. Is provided as.

The main part of the function setting type electronic counter (10) will be described in more detail.

The gate array (13) has a structure as shown in FIG. 4, for example.

In FIG. 4, (13a) is a counter circuit, for example, 6
It has a digit up / down counter circuit and a latch comparison circuit that latches the first and second preset values and compares the latched values with the counter value. (13b) is an input processing and selection circuit which is a functional circuit (a) for input, and inputs signals from four input signal lines (IN ₁ ) (IN ₂ ) ... (IN ₄ ) to a selection terminal ( The counter circuit (13a), etc. is processed as the count signal (CNT), the up / down identification signal (UP / Down), and the count inhibit signal (INH) by processing according to the input processing method specified by SEL ₀ ) (SEL ₁ ). Output to. This processing is performed by the counter circuit even if the input signals (IN ₁ ) (IN ₂ ) ... (IN ₄ ) are input in any of the input formats ( ₁ ) to ( ₄ ) described above in [Prior Art]. (13a) is output as a signal of a fixed format that can be directly accepted. (13c) and (13d) are address decoders and data input / output circuits through which the CPU (16) reads and writes the count value and the first and second preset values to the counter circuit (13a). (13e) is an output control circuit which is a functional circuit (b) for output, and outputs it to the output processing circuit (14) when the counter circuit (13a) counts up. This output control circuit (13e) has a select terminal (HOL
D / SINGL) specifies the function of self-holding output or one-shot pulse output. (13b) is a zero output code management and effective digit selection circuit, and (13g) is a counting prohibition circuit.

The output processing circuit (14) is composed of an IC type or IA type relay or transistor. This output processing circuit (1
In 4), both a relay and a transistor may be provided so that output can be made from either of them, and selective operation may be performed according to the function designation information.

CPU (16) is a one-chip microcomputer,
The function setting unit (16a) functionally configured by the built-in program, according to the function selection information read from the mounting unit (23), the input and output functional circuits (a) (b) of the gate array (13). ) Is initialized. A key control unit (16c) functionally configured by a program periodically scans and detects whether or not the key switches (21 ₁ ) (21 ₂ ) ... (21 ₈ ) are pressed.

The function specifying module (24) is provided with a group of terminals (24a) for receiving a pin, which is a mounting portion (23), as shown in FIG. 5, in a housing as shown in FIG. It is connected by the short-circuit wire (26) (26). Further, slide switches (27), (28) and (29) are connected to this terminal (24a) to switch between speed switching and self-holding / one-shot output. These slide switches (27) (28)
(29) is provided on the top surface of the function designation module (24) as shown in FIG. A plurality of types of this function designation module (24) are manufactured according to each function to be designated, and each has a short circuit / opening of each terminal (24a) ... ) Has function selection information. The top surface of the function specifying module (24) is provided with an indication indicating what kind of terminal the corresponding input / output terminals (12 ₁ ) (12 ₂ ) ... (15 ₁ ) ... (15 ₄ ) are used. To be This is attached by a label or the like.

Next, the operation of the function setting type electronic counter (10) of the present invention will be described.

At the time of shipment, as shown in FIG. 3, a predetermined function designating module (24) is mounted in the mounting portion (23) in the storage hole (25a) of the terminal block (25) on the rear surface of the electronic counter. When the power is turned on with the specified wiring during installation, the CPU (16) starts from the beginning of the program shown in Fig. 6 by the power-on reset circuit ( _16R ).

First, the internal CPU is initialized, and then the contents of the function specifying module (24) are read out through the mounting section (23). The contents read here are an input / output format, a count format, an operation speed, and the like. Next, it is determined whether the operating means is the key switch (12 ₁ ) (12 ₂ ) ... Or the digital switch. As for the processing of the digital switch, the digital switch (31) and the key switch (32) as shown in FIG. 7 are displayed on the operation panel (22) and the key switch (21 ₁ ) (21 ₂ )
This is performed when it is incorporated in place of ... And its description is omitted here.

Next, it is determined whether or not it is a test process. This test processing is executed when a test module (not shown) is mounted in place of the function specifying module (24), and the electronic counter of the present invention is operated by a signal given by the test device to which the test module is connected. Check whether all the parts in (10) operate normally. By using the test module in this way, for example, it is possible to instantly check whether or not all the segments of the numeral display (17) emit light. In the conventional method, a count pulse is input one by one and 888888 is displayed on the 6-digit number display (17), so that it takes a few hours because of the input speed.

It is not usually a test process, so next is the gate array (13).
Initialize. This is to set the input / output method and the counting method in the functional circuits (a) and (b) inside the gate array (13). The counting speed is directly transmitted from the function designation module (24) to the input signal processing circuit (11) as shown in FIG. Two slide switches (2
8) The frequency range to be counted is switched to 3 levels by the ON / OFF output of (29).

Next, the count value and the preset value are read from the gate array (13). This is necessary when the operation is resumed after a power failure, and the data held by the battery backup inside the gate array (13) is taken inside the CPU (16) to recover from the state before the power failure. Allow restart.

Next, the count value is displayed. In this, the CPU (16) reads the count value from the count circuit (13a) inside the gate array (13) and displays it on the number display (17).

After that, the process enters a processing loop for inputting the first and second preset values from the key switches (21 ₁ ) (21 ₂ ). The schematic describe the start the preset value input operation by pressing the key switch (21 ₆₎ (21 ₇₎ ..., the key switch (21 ₁₎ (21 ₂₎ (21 ₃₎ numeric displays a preset value by ( Display in 17). And in a state where the desired preset value is displayed, by pressing the registration key (21 _5), rewritten to the counter circuit of the gate array this preset value by CPU (16) (13) (13a). The preset value input processing loop ends immediately when an input operation is not performed, ends when the input operation is performed, and returns to the above-described count value display again. In the meantime, the gate array (13) continues the counting operation independently according to the initialized input / output format, and generates the count-up output when the count value reaches the preset value.

The function specifying module (24) of the present invention may be connected with an input / output signal line (33) as shown in FIG. Through this signal line (33), the internal information of the counter circuit (13a) such as preset value, count value, and count-up output can be sent and received to and from external equipment through the CPU (16), and centralized management is easy. become.

[Effect of device]

According to the present invention, one type of electronic counter can be made to be one of a variety of dedicated type electronic counters that are classified according to the input format and the output format, simply by mounting the function specifying module. Therefore, in the field of electronic counters that perform high-mix low-volume production, production costs and distribution costs can be significantly reduced.

In particular, since the function setting type electronic counter of the present invention is supplied to the user as a dedicated type, there is no troublesome setting and troubles due to setting mistakes do not occur, so that it is very easy to use. There is also an advantage that the electronic counter can be changed to another type by simply replacing the function specifying module.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing an overall configuration of an embodiment of a function setting type electronic counter of the present invention, and FIGS. 2 and 3 are perspective views showing a front portion and a rear portion of the electronic counter of FIG. 1, respectively. . FIG. 4 is an internal block diagram of the gate array shown in FIG.
FIG. 7 is a diagram showing a concrete configuration example of the function designation module shown in FIG. 1, FIG. 6 is a flowchart showing an operation example of the CPU shown in FIG. 1, and FIG. 7 is a key switch shown in FIG. It is a block diagram of the digital switch used instead. 8th
FIG. 7 is a perspective view showing another embodiment of the function designation module shown in FIG. 9 and 10 are perspective views showing a conventional electronic counter, FIG. 9 is a view seen from the front side, and FIG. 10 is a view seen from the rear side. (10): Function setting type electronic counter, (12 ₁ ) (12 ₂ ) (12 ₃ ) (12 ₄ ) ... input terminal, (13) ... gate array, (13a) ... counting circuit, (a) ) (B) …… Function circuit, (15 ₁ ) (15 ₂ ) …… Output terminal, (16) …… CPU, (16a) …… Function setting section, (17) …… Numerical display, (21 ₁ ) (21 ₂ )… (21 ₈ )… Key switch, (23) …… Mounting part, (24) …… Function designation module.

Claims (1)

[Scope of utility model registration request] 1. An electronic counter comprising a plurality of input / output terminals, a counter circuit, and a numerical display of a counter value, counting the pulses input from the input terminal and outputting when the pulse reaches a preset value, A gate array having the above-mentioned counter circuit and a function circuit for switching the input format and the output format of this counter circuit, a function designation module that defines the function selection information of the input format and the output format depending on the presence or absence of a short circuit of the terminal, and this function designation module And a function setting section for reading the selection information of the function designating module from the mounting section and initializing the functional circuit. The functional circuit adds a pulse as an input format. Or only subtracting with a pulse, adding with a pulse input from one of the two input terminals, and adding the other One that subtracts the input pulse, one that adds or subtracts pulses that are simultaneously input with a phase difference from the two terminals according to the direction of the phase difference, one that also has a count prohibition input, addition and subtraction Either one with switching input or one with switching function of counting speed (pulse frequency to be counted) or a combination of these can be selected, and self-holding output, output only for a fixed time as output format A function setting type electronic counter characterized by being able to select a single shot output to be used.