JPH10333702A - Controller device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make simple and inexpensive a logical constitution or input and output allocation in a controller device for performing the logical operation of a control signal related with the operation of an object to be controlled, and outputting it. SOLUTION: A control part 7 outputs a manipulated variable from a deflection between a target value and a measured value, and outputs a control signal to an input and output logic operating part 9. The input and output logic operating part 9 in which logical element combination or input and output allocation can be set outputs a logical arithmetic output to an inputting and outputting part 13. The inputting and outputting part 13 is provided with plural input and output terminals DI and DO. A display setting part 11 can display an operation in the control part 7, and set the logical element combination or logical input and output allocation in the input and output logic arithmetic part 9 under prescribed input screen display.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a controller device, and more particularly to a controller device that controls a controlled object by an operation amount and logically calculates and outputs various control signals related to the operation of the controlled object.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 7, for example, as shown in FIG. 7, a controller 1 controls a preset target value SV and a temperature input (measured value) PV from a control target (not shown). The control output (manipulation amount) MV is calculated from the deviation from the control output and output to the control target, and a control signal related to operation, such as a warning signal, is output to the input / output unit 3. Various control signals input through the input terminal DI are logically operated with the alarm signal, and are assigned to a plurality of digital output terminals DO to output actual alarm signals and the like. The target value SV, the measured value PV, the deviation, the operation amount MV, and various control signals are displayed on the display setting unit 5, and the target setting SV and the like can be set from the display setting unit 5.

In such a controller device, the control signals are logically operated according to a sequence program stored in the input / output unit 3 in advance to output an alarm signal.

[0004]

However, in the above-described conventional controller device, the logical operation of the control signals is performed according to a sequence program stored in the input / output unit 3 in advance. It is necessary to store a plurality of sequence programs in the input / output unit 3 in advance in accordance with the input / output terminals to be input / output, and to switch and execute the sequence programs by the display setting unit 5, which makes the sequence program complicated and increases costs. I was Moreover, since it is necessary to predict a plurality of sequence programs and store them in the input / output unit 3 in advance, there is a problem that when a logical operation other than the expected logical operation becomes necessary, it cannot be directly handled.

SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional drawback, and an arbitrary logical operation output can be easily set for a control signal accompanying operation of a controlled object.
It is an object of the present invention to provide a controller device with good operability and reduced cost.

[0006]

SUMMARY OF THE INVENTION In order to solve such problems of the present invention, the present invention controls a controlled object by calculating and outputting an operation amount from a deviation between a target value and a measured value from the controlled object. A control unit for inputting and outputting a control signal related to the operation of the controlled object, and an input / output unit having a plurality of input / output terminals for inputting / outputting a control signal to / from the outside,
An input / output logical operation unit that performs a logical operation on the control signal from the input / output unit and / or the control unit and outputs the control signal to the control unit or the input / output unit; a logical operation configuration in the input / output logical operation unit; A display setting section for displaying a screen relating to allocation of the control signals to be input, allocation of an output from the logical operation configuration to an output section or a control section, and setting them.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic block diagram showing an embodiment of a controller device according to the present invention. In FIG. 1, a control unit 7 is provided with a target value SV set in advance.
And a manipulated variable MV that reduces this deviation from a deviation between the temperature input as a measured value PV from a control object (not shown).
For example, the controller is a temperature controller that performs PID calculation of a control output and outputs the control output to a control target, and is connected to the input / output logic operation unit 9 and the display setting unit 11. However, it is not limited to a temperature controller.

The control unit 7 outputs to the input / output logical operation unit 9 control signals relating to the operation of the controlled object such as an internal status signal, an operation status signal, and an alarm signal, which will be described later, in addition to the output of the manipulated variable MV. The value PV, the manipulated variable MV, the deviation, their control signals, and the like are output to the display setting unit 11, and the target value SV and other inputs from the display setting unit 11 can be set. Since the control unit 7 is conventionally known, a detailed description thereof will be omitted.

The input / output logical operation unit 9 includes OR, NOR, A
ND, NAND, and other logical element connection combination configuration, allocation of control signals to be input to those logical elements, and further, output allocation of logically operated control signals, which can be variably set, It is connected to the display setting unit 11 and the input / output unit 13. The input / output unit 13 has a plurality of digital input terminals DI for externally inputting the above-described digital control signal and a plurality of digital output terminals DO for outputting the digital control signal to the outside. However, in FIG. Each of the digital input terminal DI and the digital output terminal DO is indicated by one line.

The display setting section 11 has a display section 11a composed of, for example, a liquid crystal display device, and as shown in FIGS. 2 to 4, a logical input setting for assigning inputs to logical elements and setting a combination of logical elements. Screen, a logical output setting screen for setting an output terminal DO for allocating an output of a combination of the logical elements,
In addition to a logical alarm setting screen for setting an output terminal DO (AL) for allocating an alarm signal output and a function for displaying a target value SV, a measured value PV, a deviation and an operation amount MV relating to the operation of the control unit 7 (not shown) Have. The display setting unit 11 has a plurality of touch switches 11b as input means on the display unit 11a. In the logical input setting screen, the logical output setting screen, and the logical alarm setting screen, the touch setting switch (key) 11b is used. By pressing, the combination configuration of the logic elements in the input / output logic operation unit 9, the assignment of inputs to these logic elements, and the assignment setting of the digital output terminal DO from the input / output unit 13 can be performed.

In the touch switch 11b, white characters such as "return", "ENT", "CL", "0.0" are displayed.
“1 to 9”, “−logic”, “+ logic”, and the like are switches that are changed for each of the logical input setting screen, the logical output setting screen, and the logical alarm setting screen. Then, the logical input setting screen of FIG. 3 is used for the “input”, “CH”, “inversion”, “circuit”, “delay” and “output” items in accordance with the logical input item list as shown in FIG. Configurable.

That is, the items of “input” in FIG. 3 include “1: DO (OUT)”, “2: DI (IN)”,
"3: Alarm display (A)", "4: Operation status (S)", "5: KEY status (B)", "6: Internal status (R)", "7: Logical output (SOUT)" Numerals “1” to “7” can be set, and “1: DO (OUT)” and “2: DI (I
N), "3: Alarm display (A)", "4: Operation status (S)", "5: KEY status (B)", "6: Internal status (R)", "7: Logical output ( SOUT) ”in FIG. 5 can be set.

In addition, the item of “reverse” in FIG.
It is possible to set “Reverse” or “1: No reversal”. In the “Circuit” item, the “input” number and the corresponding input state are “0: no input” and “1: input”. , And the setting of the above-described logic element is possible,
In the item of “delay”, the output from the set logic element can be set to an arbitrary number of times (time), for example, once every 200 ms. Note that <
Calculation results are displayed in parentheses. For example, 80 logic input setting screens are prepared, and 80 logic circuits for each of the logic input setting screens are incorporated. That is, the logic circuit is selected by selecting the logic input setting screen. Switching between these logic input setting screens “1” to “80” is performed by “−logic”,
This is performed by the switches 11b of “+ logic”, “++ logic” and “−−logic”, and the switch 1 of “−logic” and “+ logic”
1b switches up / down by one count, and each switch 11b of “++ logic” and “−−logic” switches up / down by 10 counts.

In FIG. 5, "TS1 to TS6" are time signals of each of the segments 1 to 6 in the program operation, and "pattern" is a program pattern number switching input. Further, when the digital output terminal DO of the input / output unit 13 is DO1 to DO24, the logical output setting screen of FIG. 3 associates the number of the “output” item set on the logical input setting screen of FIG. 2 with DO1 to DO24. By setting and inputting, the digital output terminal DO can be allocated and specified.

Further, the alarm output setting screen of FIG.
When the digital output terminals DO are DO1 to DO24, these are referred to as AL1 to AL24, and the number of the “output” item set on the logical input setting screen of FIG. The digital output terminal DO can be assigned as an alarm output terminal. The input / output logical operation unit 9 and the display setting unit 11
Can be constituted by, for example, a microcomputer forming the control unit 7 or a display device connected thereto, and can be executed by a part of a program stored in the control unit 7. Can be executed by a microcomputer and a display device (not shown) including a separate CPU, ROM, RAM, and I / O, and by a program different from the control unit 7.

Next, an operation example of the above-described controller device of the present invention will be described. 6A to 6C are schematic logical configuration diagrams for explaining main operations of the controller device of the present invention, particularly, operations centering on the input / output logical operation unit 9. FIG.
This is an operation when the power is turned on in the controller device. The logical input setting screen of FIG. 2 is displayed, and the logical input setting screen is switched to “1” by each of the “+ logic” and “−logic” switches 11b. Enter “5” in 1 to specify the key status (B), and enter “1” in the “CH” column.
Enter "4" to designate the power key, enter "6" in 2 in the "Input" column to designate the internal status (R), and enter "12" in the "CH" column to enter a temperature of 100 ° C. By specifying the above, "0" is input in the "inversion" column, the logical element "OR" is set in the "circuit" column, and the "delay" column is set to "0".

Subsequently, the logical output setting screen shown in FIG. 3 is switched and displayed, and "1" is input to the digital output terminal D16 (OUT16), and the logical output (SOU) in the "output" column of FIG.
T1) is set. With this setting, in FIG. 6A, the power is always turned on (power supply) when the power switch (key) is on or the measured temperature from the control target is 100 ° C. or more, and the control is performed with the power switch off. When the measured temperature from the target is lower than 100 ° C., an operation of always turning off the power becomes possible.

FIG. 6B shows a heater control operation for heating the control target. The logic input setting screen shown in FIG. 2 is displayed, and the "+ logic" and "-logic" switches 11b are used to set the logic input setting screen. 6 ”and switch to 1 in the“ Input ”column.
To enter the key state (B), enter "7" in the "CH" column to designate the heater switch, enter "2" in the 2 in the "input" column, and enter DI. (IN), input “12” in the “CH” column to specify the heater ON input, input “1” to 3 in the “input” column, specify DO (OUT), and specify “CH”. "7" is entered in the "" field to specify the program operation, while "0" is entered in the "Reverse" field and the logic element "O" is entered in the "Circuit" field.
R ", and the" delay "column is set to" 0 ".

Further, the logical input setting screen of FIG. 2 is switched to "7" and displayed, and "7" is input to 1 in the "input" column to specify a logical output (SOUT) and "C".
Enter "6" in the "H" column to specify SOUT6, enter "1" in 2 in the "Input" column to specify DO (OUT), and enter "15" in the "CH" column. Specify the fan output, enter "6" in 3 in the "Input" column to specify the internal status (R), and enter "11" in the "CH" column to specify any abnormality (A) Then, enter “4” in 4 in the “Input” column to specify the operation status (S), and
Enter "6" in the "H" column to specify the temperature drop state.

On the other hand, in the "reverse" column, 3 and 4 in the "input" column
Is input, and the inputs are inverted and selected, the logic element “AND” is set in the “Circuit” column, and the “delay” column is set to “0”. Then, the logical output setting screen shown in FIG. 3 is switched and displayed, and the digital output terminal DO14 (OUT1) is displayed.
4) "7" is input to set a logical output (SOUT7) in the "output" column of FIG.

With such a setting, in FIG. 6B, a logical output (SOUT6) is output when the heater switch is ON, the heater input is ON, or the program operation is ON, and the logical output (SOUT6) is output. A logic output (SOUT7) is output by the ON output and the fan ON output. However, the logic output (SOUT7) is turned off in the case of an abnormality or in a falling state. Based on this, a control signal for turning on the heater is output to the digital output terminal DO14 (OUT14).

FIG. 6C shows a control operation for controlling overheating of the heater to be controlled. The logical input setting screen shown in FIG. 2 is displayed, and the "+ logic" and "-logic" switches 11b are used to set the logical input setting screen. Switch to “28” and press “Input”
Enter "2" in the column 1 to specify DI (IN), enter "14" in the "CH" column to specify the overheat prevention meter 1, and enter "0" in the "Reverse" column. , The logic element “OR” is set in the “circuit” column, and “25” is input in the “delay” column to set the delay. Further, the logical alarm setting screen of FIG. 4 is displayed, and “28” is input to the AL output terminal AL2 to set the logical output (SOUT28) in the “output” column of FIG. For this reason, in FIG. 6C, when the output from the overheat prevention meter 1 provided for the control object has elapsed for 5 seconds, a heater overheat alarm signal is assigned to the AL output terminal AL2 and can be output.

As described above, according to the present invention, in addition to the control unit 7 for outputting the manipulated variable SV to the controlled object and the input / output unit 13 having a plurality of digital input / output terminals DI and DO,
The control unit 7 and the digital input / output terminals DI, DO
An input / output logical operation unit 9 for performing a logical operation on the control signal from
Since the display setting unit 11 having the display unit 11a and the plurality of touch-type switches 11b and setting the combination of the logical elements of the control unit 7 and the input / output logical operation unit 9 and the allocation of the input / output of the logical operation is provided, for example, the logical input setting By pressing the touch switch 11b while displaying the screen, the logical output setting screen, or the logical alarm setting screen, it is possible to set the input and output of the logical element combination configuration and the logical operation configuration. It is not necessary to store a sequence program or the like in the unit 3 in advance, so that operability is improved and cost increase can be suppressed.

In the embodiment of the present invention, the screen for setting the allocation in the display setting unit 11 is not limited to the above-described logical input setting screen, logical output setting screen or logical alarm setting screen, but may be allocated by various input screens. It is possible. Further, in the above-described embodiment, the logical operation unit 9 performs a logical operation on the control signals from the control unit 7 and the input / output unit 13 to allocate the output terminal DO of the input / output unit 13. In the controller device, the logical operation unit 9 performs a logical operation on a plurality of types of control signals input to the input / output unit 13 and assigns and outputs the control signal to the output terminal DO of the input / output unit 13. A configuration is also possible in which the output of the control signal is assigned to the control unit 7 and set.

[0025]

As described above, according to the present invention, a control section for controlling a controlled object by calculating and outputting an operation amount from a deviation between a target value and a measured value, and transmitting a plurality of control signals related to the operation of the controlled object. In addition to the input / output unit for inputting / outputting, an input / output logical operation unit for performing a logical operation on the control signal from the input / output unit and / or the control unit and outputting the result to the control unit or the input / output unit In the logical operation configuration, allocation of control signals to be input to this logical operation configuration, and display of a screen related to output of the logical operation configuration to the output unit or control unit, and a display setting unit for setting them,
In the display setting section, the logical operation configuration and the logical operation input / output of control signals such as alarm signals can be easily assigned, while the input / output section stores a sequence program etc. in advance and switches, or stores a new sequence program etc. This eliminates the need to perform the operation, thereby improving operability and suppressing an increase in cost.

[Brief description of the drawings]

FIG. 1 is a schematic block diagram showing an embodiment of a controller device according to the present invention.

FIG. 2 is a diagram illustrating a logical input setting screen in the controller device of FIG. 1;

FIG. 3 is a diagram illustrating a logical output setting screen in the controller device of FIG. 1;

FIG. 4 is a view for explaining a logical alarm setting screen in the controller device of FIG. 1;

FIG. 5 is a diagram showing a list of logical input items set on the logical input setting screen of FIG. 2;

FIG. 6 is a diagram illustrating a logical combination operation in the controller device of the present invention.

FIG. 7 is a schematic block diagram showing a conventional controller device.

[Explanation of symbols]

 1, 7 control unit 3, 13 input / output unit 5, 11 display setting unit 9 input / output logical operation unit 11a display unit 11b touch switch (key: input means)

Claims (1)

[Claims] A control unit for calculating and outputting an operation amount from a deviation between a target value and a measured value from the control target to control the control target, and inputting and outputting a control signal relating to operation of the control target; An input / output unit having a plurality of input / output terminals for inputting / outputting a control signal between the control unit and the control unit or the input / output unit by performing a logical operation on the control signal from the input / output unit and / or the control unit An input / output logical operation unit for outputting to the input / output logical operation unit, the allocation of the control signal to be input to the logical operation configuration, the output unit or the control unit for output from the logical operation configuration Display the screen about assignment to
A controller configured to set the logical operation configuration and the input / output assignment.