KR100923276B1 - Temperature and humidity control system for a thermo-hygrostat - Google Patents

Abstract

PURPOSE: A temperature and humidity control system for a thermo-hygrostat is provided to enable a user to easily select the activation of a DO output terminal without changing physical wire by including an activation selecting unit of the DO(Digital Output) output terminal. CONSTITUTION: The main control unit computes and outputs control output value based on present value and set value inputted from a touch screen. The main control unit(110) controls run, stop, error, and hold based on DI(digital Input) signals. The main control unit DO signal for controlling external devices based on the DO output control signals. A remote input-output board(120) inputs and outputs DO signals and transmits DI signals to the main control unit. A touch screen(130) displays present value and control output value. The touch screen displays the operation state of the DI input terminals formed in the remote input-output board.

Description

TEMPERATURE AND HUMIDITY CONTROL SYSTEM FOR A THERMO-HYGROSTAT}

The present invention relates to an apparatus for controlling temperature and humidity of a thermo-hygrostat, and in particular, a touch screen including a display unit and a touch screen input unit, and a remote input / output board having a DI input terminal and a DO output terminal, respectively, to configure the touch screen and the remote input / output mode. By transmitting and receiving data and control signals through communication between main controllers, the touch screen and remote I / O board can be separated from the main controller and placed remotely. Also, various operation states can be set for DI signals and errors In the case of a state, the present invention relates to a temperature and humidity control apparatus of a thermo-hygrostat, which is suitable for improving the user environment by allowing a user to set display means for displaying the error state.

In general, the thermo-hygrostat is necessary equipment to perform various tests on the sample in the chamber with a sample such as LCD film placed inside the chamber. The chamber of the thermo-hygrostat must maintain a constant humidity and temperature at all times. .

The temperature and humidity control device of the thermo-hygrostat is to control the chamber of the thermo-hygrostat as described above at a constant temperature and humidity.

Figure 1 is a block diagram of a temperature and humidity control device of a constant temperature and humidity according to the prior art.

As shown in Figure 1, the temperature-humidity control device of the conventional thermo-hygrostat, the temperature and humidity that is an analog signal received from a temperature and humidity sensor (a name generally used for the temperature sensor and the humidity sensor, the same meaning throughout the specification) The temperature / humidity in the chamber based on the A / D conversion unit 12 for converting the digital signal into a digital signal and the current temperature and humidity value and the set value (target value to be controlled) received from the A / D conversion unit 12. A CPU 11 for calculating a control output value to be outputted to an external device (for example, a heater or a cooler), and a display unit 13 for displaying a current temperature and humidity value, a set value, and a control output value under control of the CPU 11. ), An output unit 15 for D / A converting the output value calculated by the control of the CPU 11 and outputting to an external device, a DI input terminal 14 for inputting a DI signal as a contact signal from the outside, and the By the control of the CPU 11 Stand consists of a DO output terminal 16 for outputting a DO signal to control the external device.

However, in the case of the temperature and humidity control apparatus 10 according to the prior art as described above, it is possible to control an external device remote for several Km from the temperature and humidity control apparatus 10 or to remote environment (for example, the door of the chamber is open). Based on), there is no technology to control the temperature and humidity of the thermo-hygrostat, and therefore, it is necessary to develop a control technology for a variety of external environments.

The present invention was created to solve the problems of the prior art as described above, and an object of the apparatus for controlling the temperature and humidity of the thermo-hygrostat according to the present invention comprises a touch screen including a display unit and a touch screen input unit and the touch screen and the main controller. It is possible to send and receive data and control signals by communication between them, so that the touch screen can be separated from the main controller and placed remotely. Also, the remote I / O board equipped with DI input terminal and DO output terminal can be separately configured. Temperature and humidity control of thermo-hygrostat that is suitable for realizing improved and convenient control environment by separating remote I / O board from main controller so that signals can be transmitted and received by communication between main controller and main controller. To provide a device.

Another object of the temperature and humidity control apparatus of the thermo-hygrostat according to the present invention is to set various operating states (e.g., error state, operation and stop state, hold state) with respect to the DI signal input to the DI input terminal. The present invention provides a temperature and humidity control apparatus for a thermo-hygrostat, which is suitable for improving the user environment by allowing a user to set display means for displaying the state.

Still another object of the apparatus for controlling the temperature and humidity of a thermo-hygrostat according to the present invention is that, when an operating state of an DI input terminal is in an error state and is displayed using image data, image data for displaying an error state is stored using an external memory. To provide a temperature and humidity control device of a thermo-hygrostat that is suitable to be able to upload.

Still another object of the temperature / humidity control device of the thermo-hygrostat according to the present invention is to provide a DO output stage activation selector for actually operating among a plurality of DO output stages provided in the remote I / O board, so that the physical connection is simple without changing the physical wiring. It is to provide a temperature and humidity control device of a thermo-hygrostat so that the user can select whether or not to activate the DO output stage to perform a convenient control of the DO output stage.

Temperature and humidity control device of the thermo-hygrostat according to the present invention for achieving the above object, in the temperature and humidity control device of the thermo-hygrostat for controlling the temperature and humidity of the thermo-hygrostat, the present value (PV) and the touch screen detected from the temperature and humidity sensor The control output value (MV) is calculated based on the set value (SP) input from the controller, and is outputted to the thermo-hygrostat that is the temperature / humidity control target. (STOP), error (ERROR) and hold (HOLD) control and performs a main control unit (110) for outputting a DO (Digital Output) output control signal to the remote I / O board, and communication with the main controller A data signal and a control signal, and outputs a DO signal for controlling the operation of an external device based on a DO output control signal received from the main controller, and is input from an external device. Remote I / O board transmitting the DI signal to the main controller through communication, and remotely located with the main controller to transmit and receive data and control signals through communication with the main controller, and the set value SP is input and inputted. The set value SP is transmitted to the main controller by communication, and the present value PV and the control output value MV received by the communication from the main controller are displayed, and a plurality of DI input terminals of the remote I / O board are provided. Characterized in that it comprises a touch screen for displaying the operation status.

Temperature and humidity control device of the constant temperature and humidity of the present invention having the configuration as described above has the following effects.

First, by constructing a touch screen including a display unit and a touch screen input unit, and transmitting and receiving data and control signals by communication between the touch screen and the main controller, the touch screen can be remotely disposed and separated from the main controller. The result is an improved and more convenient control environment.

Secondly, by configuring a remote I / O board equipped with a DI input terminal and a DO output terminal separately and allowing the remote I / O board and the main controller to transmit and receive signals by communication, the remote I / O board can be separated from the main controller and placed remotely. The result is an improved and more convenient control environment.

Third, various operation states (e.g., error state, operation and stop state, hold state) can be set for the DI signal input to the DI input terminal, and in the case of error state, the user can set display means for displaying the state. By doing so, the user environment can be improved.

Fourth, when the operation state of the DI input terminal is an error state and displays it using image data, there is an effect that the data can be uploaded using an external memory to display the image state for displaying the error state.

Fifth, the DO output stage activation selection unit for actually operating among a plurality of DO output stages provided in the remote I / O board has the effect that the user can easily select whether to activate the DO output stage without changing the physical wiring. have.

Next will be described in detail with reference to the accompanying drawings a preferred embodiment of the temperature and humidity control device of the constant temperature and humidity of the present invention.

Figure 2 is a block diagram of a temperature and humidity control device of a constant temperature and humidity according to an embodiment of the present invention.

As shown in Figure 2, the temperature and humidity control device of the thermo-hygrostat according to an embodiment of the present invention, in the temperature and humidity control device of the thermo-hygrostat for controlling the temperature and humidity of the thermo-hygrostat, the main control unit (Main Control Unit) It characterized in that it comprises a 110 and the remote input and output board 120 and the touch screen (130).

The main control unit 110 calculates the control output value MV based on the present value PV detected from the temperature and humidity sensor and the set value SP input from the touch screen 130, and controls the temperature and humidity. Output to the target thermo-hygrostat, and perform RUN, STOP, ERROR and HOLD control based on DI (Digital Input) signal received from remote I / O board 120, DO (Digital Output) Outputs an output control signal to the remote input / output board 120.

The remote I / O board 120 transmits and receives data and control signals through communication with the main controller 110, and is provided with an external device (eg, a constant temperature and humidity controller) based on a DO output control signal received from the main controller 110. Outputs a DO signal for controlling the operation of a heater or an air conditioner, and transmits a DI signal which is a contact signal input from the outside (for example, a switching signal when a door of a thermo-hygrostat is opened) by communication with the main controller ( 110).

The touch screen 130 is located remotely from the main controller 110 to transmit and receive data and control signals by communication with the main controller 110, the setting value (SP) is input and the input setting value (SP) Transmission to the main controller 110 by communication, and displays the current value (PV) and the control output value (MV) received by the communication from the main controller 110, a plurality of remote I / O board 120 The operation state of the DI input terminal 122 is displayed.

3 is a detailed block diagram of the main controller 110 of FIG. 2.

As shown in FIG. 3, the main controller 110 includes a sensor input unit 113, a first CPU 111, a first memory 112, a first communication unit 115, and a second communication unit 116. It is configured to include a control output unit 114.

The sensor input unit 113 converts the current value PV of the analog signal input from the temperature / humidity sensor S1 into the current value PV of the digital signal, and sends it to the first CPU 111.

The first CPU 111 calculates a control output value (MV) based on a current value PV received from the sensor input unit 113 and a set value SP input from the touch screen 130. And outputting to the 114, when the present value PV, the set value SP, and the control output value MV satisfy the conditions set by the DO output setting unit 410 of the touch screen 130. Outputs the signal to the remote I / O board 120, and performs RUN, STOP, ERROR, and HOLD control based on the DI signal received from the remote I / O board 120. By performing a communication protocol stored in the first memory 112 to generate a data frame to control the communication with the touch screen 130 and the remote input and output board 120, and controls the entire main controller Configuration.

The first memory 112 stores data including a current value PV, a set value SP, and a control output value MV by the control of the first CPU 111, and the touch screen 130. And a routine of a communication protocol for performing communication with the remote I / O board 120.

The first communication unit 115 is a communication module for communicating with the touch screen 130, and the second communication unit 116 is a communication module for communicating with the remote I / O board 120.

The control output unit 114 converts the control output value MV of the digital signal received from the first CPU 230 into a control output value of the analog signal and outputs the control output value.

4 is a detailed block diagram of the remote I / O board 120 in FIG. 2.

As shown in FIG. 4, the remote input / output board 120 includes a plurality of DI input terminals 122, a plurality of DO output terminals 123, a second CPU 121, and a remote input / output board communication unit 124. It is characterized by.

The DI input terminal 122 is configured to receive a DI signal, which is a contact signal (eg, a switching-on signal when the door of the thermo-hygrostat is opened) from the outside.

The DI input terminal 122 is composed of a plurality (for example, 16), receives a changed state of a remote environment that is remote as a switching signal and sends it to the second CPU 121.

The plurality of DO output stages 123 is a component for outputting a DO signal for controlling the operation of an external device (for example, a heater or a cooler provided in the thermo-hygrostat) based on the DO output control signal received from the main controller 110. .

The DO output stage may be configured by, for example, a relay, and may be configured in plural to control an external device remote from the main controller 110 as far as several kilometers.

The second CPU 121 executes a communication protocol stored therein to generate a data frame so that the second CPU 121 can communicate with the main controller 110 through the remote I / O board communication unit 124, and the plurality of DI input terminals. The DI signal input from the 122 is controlled to be transmitted to the main controller 110, and the DO output terminal 123 outputs the DO signal based on the DO output control signal received from the main controller 110. Drive control 123).

The remote input / output board communication unit 124 is a communication module for communicating with the main controller 110.

FIG. 5 is a detailed block diagram of the touch screen 130 in FIG. 2.

As shown in FIG. 5, the touch screen 130 includes a touch screen input unit 132, a third memory 134, a third CPU 131, a display unit 136, and a touch screen communication unit 133. Characterized in that the configuration.

The touch screen input unit 132 is a user interface (UI) for inputting data including a set value SP and a control command.

The third memory 134 stores a routine of a communication protocol for communicating with the main controller 110 under the control of the third CPU 131, and stores image data to be displayed in the picture mode in an error state. It is a storage medium.

 The third CPU 131 may communicate with the main controller 110 through the touch screen communication unit 133 by reading the communication protocol stored in the third memory 134 and executing the corresponding communication protocol to generate a data frame. Control to control the overall configuration of the touch screen 130.

The display unit 136 displays the present value PV and the control output value MV of the temperature and humidity received by communication from the main controller 110 under the control of the third CPU 131, and also displays an error state. Is set to the picture mode, the image data stored in the third memory 134 is displayed.

The touch screen communication unit 133 is a communication module for communicating with the main controller 110.

11 is an external configuration diagram of the touch screen 130 in the temperature and humidity control apparatus of the thermo-hygrostat according to an embodiment of the present invention.

 As shown in FIG. 11, in the apparatus for controlling the temperature and humidity of a thermo-hygrostat according to an embodiment of the present invention, a memory for inserting and mounting an external memory 135 that stores image data to be displayed in a picture mode in an error state. The mounting slot 135a is formed on one side of the front surface of the touch screen 130. The external memory 135 is inserted into the memory mounting slot 135a to be mounted to mount the external memory 135. The image data is stored in the third memory 134 by uploading the image data stored in the external memory 135 to the third memory 134 by the control.

FIG. 6 is a detailed block diagram of the touch screen input unit 132 of FIG. 5.

As shown in FIG. 6, the touch screen input unit 132 includes a setting value SP input unit 210 for inputting a setting value SP, which is a control target value of temperature and humidity inside the thermo-hygrostat chamber, DI setting input unit 220 for inputting DI-related data including an operation state of a plurality of DI input terminals 122, and a condition for outputting a DO signal from the DO output terminal 123, and inputs a DO-related control command. The DO setting input unit 230 is provided.

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FIG. 7 is a detailed block diagram of the DI setting input unit 220 of FIG. 6, and FIG. 8 is a detailed block diagram of the DI operation state setting unit 310 of FIG. 7.

As shown in FIG. 7, the DI setting input unit 220 includes a DI operation state setting unit 310, an error display mode setting unit 320, and a DI sensing delay setting unit 330. .

The DI operation state setting unit 310 sets an operation state of each DI input terminal 122 to any one of an error state, an operation and a stop state, and a hold state when DI signals are input to the plurality of DI input terminals 122. As a user interface for implementing the same, an error state setting key 311, an operation and stop state setting key 312, and a hold state setting key 313 are provided as illustrated in FIG. 8.

For example, when a DI signal is input to the first DI input terminal 122 among the plurality of DI input terminals 122, when a condition is set to an error state, the first DI input terminal 122 displayed on the screen of the touch screen 130 is displayed. ), The error state setting key 311 may be input.

The hold state setting key 313 is a setting key for maintaining the hold state when the DI signal is input from the DI input terminal 122. The hold state is an operation mode for maintaining the system as it is.

The first CPU 111 is configured by the DI signal received from the DI input terminal 122, the error state setting key 311, the operation and stop state setting key 312, and the hold state setting key 313. The operation mode corresponding thereto is controlled based on the input operation state.

The error display mode setting unit 320 is a user interface for setting a display mode (eg, a picture mode and a text mode) for displaying an error state when the operation state of the DI input terminal 122 is an error state.

The DI sensing delay setting unit 330 generates a DI signal after a set time from a point in time when the DI signal is input to the DI input terminal 122 and transmits the DI signal to the first CPU 111. User interface for doing so.

9 is a detailed block diagram of the error display mode setting unit 320 of FIG. 7.

As shown in FIG. 9, the error display mode setting unit 320 includes a picture mode for displaying image data stored in the third memory 134 and a text mode for displaying character data. do.

In the picture mode, when a DI signal is input to the DI input terminal 122 in a state in which a specific DI input terminal 122 is set to an error state, the display unit retrieves the image data stored in the third memory 134 and displays the image data. 136 is an error display mode indicating that an error state is indicated, and the text mode is a third memory device when a DI signal is input to the DI input terminal 122 while a specific DI input terminal 122 is set to an error state. 134 is an error display mode indicating that an error state is obtained by calling up character data (for example, DI # 3 ERROR OCCURRED) stored in the display unit 134 and displaying the same through the display unit 136.

FIG. 10 is a detailed block diagram of the DO setting input unit 230 of FIG. 6.

As shown in FIG. 10, the DO setting input unit 230 includes a DO output setting unit 410 and a DO output stage activation selecting unit 420.

The DO output setting unit 410 is a user interface for setting a condition for outputting a DO signal from the DO output terminal 123.

The DO output stage activation selector 420 is a user interface for setting a DO output stage 123 to be activated among the plurality of DO output stages 123 without changing physical connections of the plurality of DO output stages 123.

In this case, the first CPU 111 selects the DO output terminal selected by the DO output terminal activation selecting unit 420 based on a unique number of the DO output terminal 123 selected by the DO output terminal activation selecting unit 420. Only the control unit 123 is operated, and the DO output terminal 123 not selected by the DO output terminal activation selecting unit 420 is characterized in that it is controlled to not operate.

The DO output stage activation selector 420 may be configured to complete the selection by, for example, inputting a unique number of the DO output stage 123 to be activated.

In addition, the touch screen 130 may display an active state of the plurality of DO output terminals 123.

That is, the touch screen 130 is activated for the DO output terminal 123 selected by the DO output terminal activation selector 420 under the control of the first CPU 111 and the third CPU 131. The DO output terminal 123, which is not selected by the DO output terminal activation selection unit 420, is not activated.

In addition, the touch screen 130 and the main controller 110 may perform communication by RS485 communication, and the remote I / O board 120 and the main controller 110 may perform communication by RS485 communication. .

The following describes the operation of the temperature and humidity control device of the constant temperature and humidity of the present invention.

First, when the external memory 135 storing the image data to be displayed in the picture mode is inserted into the memory mounting slot 135a, the third CPU 131 recognizes this and the user downloads the download button provided in the touch screen input unit 132. Pressing (not shown) downloads the image data stored in the external memory 135 to the third memory 134 under the control of the third CPU 131.

As described above, in the state where the image data is stored in the third memory 134, for example, an operation state of the first DI input terminal 122 among the plurality of DI input terminals 122 is set to an error state, and the user selects the first DI input terminal 122. When the error display mode is set to the picture mode, when the DI signal is input to the first DI input terminal 122, the display unit 136 is controlled by the control of the second CPU 121 and the third CPU 131. The set image data is displayed so that the user recognizes that the external environment of the first DI input terminal 122 is in an error state.

The above embodiments of the present invention are merely one embodiment of the technical idea of the present invention, and of course, other modifications can be made within the technical idea of the present invention by those skilled in the art.

1 is a block diagram of a constant temperature and humidity controller temperature and humidity controller according to the prior art.

2 is a block diagram of an apparatus for controlling the temperature and humidity of a thermo-hygrostat according to an embodiment of the present invention.

FIG. 3 is a detailed block diagram of the main controller in FIG. 2.

4 is a detailed block diagram of the remote I / O board in FIG. 2.

FIG. 5 is a detailed block diagram of a touch screen in FIG. 2.

FIG. 6 is a detailed block diagram of a touch screen input unit in FIG. 5.

FIG. 7 is a detailed block diagram of the DI setting input unit in FIG. 6.

FIG. 8 is a detailed block diagram of the DI operation state setting unit in FIG. 7.

FIG. 9 is a detailed block diagram of the error display mode setting unit in FIG. 7.

FIG. 10 is a detailed block diagram of the DO setting input unit in FIG. 6.

11 is an external configuration diagram of a touch screen in the apparatus for controlling the temperature and humidity of the thermo-hygrostat according to one embodiment of the present invention.

          Explanation of symbols on the main parts of the drawings

110; Main controller 111; 1st CPU

112; First memory 113; Sensor input

114; Control output unit 115; First communication part

116; Second communication unit 120; Remote I / O Board

121; Second CPU 122; DI input terminal

123; DO output stage 124; Remote input / output board communication unit

130; Touch screen 132; Touch screen input

133; Touch screen communication unit 134; Third memory

135; External memory 135a; Memory-mounting slot

136; Display unit 210; Set value input section

220; DI setting input unit 230; DO setting input section

310; DI operation state setting unit 320; Error display mode setting part

330; DI sensing delay setting unit 410; DO output setting section

420; DO output stage activation selector

Claims (9)

delete delete delete delete delete delete In the temperature and humidity control apparatus of the thermo-hygrostat for controlling the temperature and humidity of the thermo-hygrostat: The control output value (MV) is calculated based on the present value (PV) detected from the temperature and humidity sensor and the set value (SP) input from the touch screen 130, and is then outputted to the thermo-hygrostat that is the object of temperature and humidity control. RUN, STOP, ERROR and HOLD control are executed based on DI (Digital Input) signal received from), and DO (Digital Output) output control signal Main control unit 110 to output to 120, Transmit and receive data and control signals through communication with the main controller 110, output a DO signal for controlling the operation of the external device based on the DO output control signal received from the main controller 110, from the outside A remote input / output board 120 for transmitting the DI signal, which is an input contact signal, to the main controller 110 by communication; It is located remotely from the main controller 110 and transmits and receives data and control signals by communication with the main controller 110, the set value SP is input and the input set value SP is communicated by the main controller ( 110, the present value PV and the control output value MV received by the communication from the main controller 110, and the plurality of DI input terminal 122 of the remote input / output board 120 It is configured to include a touch screen 130 for displaying the operation status, The main controller 110, A sensor input unit 113 for converting the present value PV of the analog signal input from the temperature and humidity sensor S1 into the present value PV of the digital signal, The control output value (MV) is calculated and output based on the present value PV received from the sensor input unit 113 and the set value SP input from the touch screen 130, and the present value PV and When the set value SP and the control output value MV satisfy the conditions set by the DO output setting unit 410 of the touch screen 130, the DO output control signal is output to the remote I / O board 120, and the remote Based on the DI signal received from the input / output board 120, the RUN, STOP, error display, and hold control are performed, and the communication protocol stored in the first memory 112 is executed. A first CPU 111 for controlling communication with the touch screen 130 and the remote I / O board 120 by generating a data frame, and controlling the entire main controller; Under the control of the first CPU 111, data including a present value PV, a set value SP, and a control output value MV is stored, and the touch screen 130 and the remote input / output board 120 are stored. A first memory 112 that stores a routine of a communication protocol for communicating with the first memory 112; A first communication unit 115 for communicating with the touch screen 130; A second communication unit 116 for communicating with the remote input / output board 120; And a control output unit 114 for converting the control output value MV of the digital signal received from the first CPU 230 into a control output value of the analog signal, and outputting the control output value. The remote input and output board 120, Remote I / O board communication unit 124 for communicating with the main controller 110, A plurality of DI input terminals 122 into which a DI signal, which is a contact signal, is input from the outside; A plurality of DO output stages 123 for outputting DO signals for controlling the operation of an external device based on the DO output control signals received from the main controller 110; By executing a communication protocol stored therein to generate a data frame to communicate with the main controller 110 through the remote I / O board communication unit 124, the DI input from the plurality of DI input terminal 122 Controls the transmission of the signal to the main controller 110, and drives the DO output terminal 123 to control the DO output terminal 123 to output the DO signal based on the DO output control signal received from the main controller 110. It is configured to include a second CPU 121, The touch screen 130, A touch screen input unit 132 for inputting data and control commands including a set value SP; A third memory 134 storing a routine of a communication protocol for communicating with the main controller 110, and storing image data to be displayed in a picture mode in an error state; Reads the communication protocol stored in the third memory 134 and executes the corresponding communication protocol to generate a data frame to control the communication with the main controller 110 through the touch screen communication unit 133 and the touch screen. A third CPU 131 for controlling the overall configuration; Under the control of the third CPU 131, the present value PV and the control output value MV of the temperature and humidity received by communication from the main controller 110 are displayed, and the image data when the error state is set to the picture mode. A display unit 136 for displaying a, It is configured to include a touch screen communication unit 133 for communicating with the main controller 110, A memory mounting slot 135a for inserting and mounting an external memory 135 storing image data to be displayed in an error picture mode is formed at one side of the front surface of the touch screen 130. The external memory 135 is inserted into the memory mounting slot 135a and mounted, and image data stored in the external memory 135 is controlled by the third CPU 131 to the third memory 134. By uploading the image data is stored in the third memory 134, In the touch screen input unit 132, A set value input unit (210) for inputting a set value (SP) which is a control target value of temperature and humidity in the thermo-hygrostat chamber; A DI setting input unit 220 for inputting DI related data including an operation state of the DI input terminal 122; DO setting input unit 230 for setting a condition for outputting the DO signal from the DO output terminal 123 and inputs a DO-related control command, In the DI setting input unit 220, A DI operation state setting unit 310 for setting an operation state when an DI signal is input to the plurality of DI input terminals 122 to any one of an error state, an operation and stop state, and a hold state; An error display mode setting unit 320 for setting a display mode for displaying an error state when an operation state of the DI input terminal 122 is an error state; When the DI signal is externally input to the DI input terminal 122, the DI sensing delay setting unit 330 generates a DI signal after a set time from the time point at which the DI signal is input and transmits the DI signal to the first CPU 111. Is equipped, The DO setting input unit 230, A DO output setting unit 410 for setting a condition for outputting a DO signal from the DO output terminal 123; A DO output stage activation selector 420 is provided for setting a DO output stage 123 to be activated among a plurality of DO output stages 123 without changing physical connections of the plurality of DO output stages 123. The first CPU 111 controls to operate only the DO output stage 123 selected by the DO output stage activation selecting unit 420 and is not selected by the DO output stage activation selecting unit 420. Is characterized by controlling not to operate, The touch screen 130 is a temperature and humidity control apparatus of a thermo-hygrostat, characterized in that to display the (ALIVE) state of the plurality of DO output stage (123). The method according to claim 7, The error display mode setting unit 320, And a picture mode for displaying image data stored in the third memory 134 and a text mode for displaying text data. delete

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