TW201723791A - Regulator in which a transition map is displayed on a display section when a user conducts an operation of switching of display items - Google Patents

Abstract

The present invention discloses a regulator that helps reduce the possibility that a user is confused in operation of a screen variation. The regulator comprises a display section (1) and a calculation section (8). The calculation section (8) comprises: a control calculation part, which calculates a control output value based on a measured processing amount; and a display control part, which controls the display section (1). In an operation that a user conducts switching of a display item, the display control part display a transition map on the display section (1). The transition map comprises: multiple marks, which are arranged in a two-dimensional array and symbolize display items; and a line, which is arranged to connect between marks of display items which can change by one operation of the user.

Description

Regulator

The present invention relates to a regulator that controls the amount of processing.

A regulator is known as a device for controlling a processing amount such as temperature, pressure, and flow rate to a set value indicated by a user. In the regulator there is an indicator regulator with a display that displays the process value and a modular (blind) regulator without a display. Patent Document 1 discloses an instruction regulator that needs to instruct a change of a setting of a regulator, a change in a target value of a control target, a change in display, and the like when the instruction regulator is used, and generally performs these operations through a button output.

As described in the patent document 1, the setting items of the regulator involve a large number of setting items due to the expansion of functions and multi-input, and if these setting items are arranged only in order, the operability is remarkably deteriorated. The content, the frequency of use, and the like are grouped into a hierarchical structure menu that is easy to use. A conventional display screen transition example is shown in (A) to (F) of FIG. 8, and a menu configuration is shown in FIG.

In the example of (A) to (F) of FIG. 8, the control amount PV1 of the channel 1 and the operation amount MV1 ((A) of FIG. 8) are initially displayed on the indicator of the regulator, if the screen is performed When the switching operation (for example, pressing the display button), the screen is switched to the screen for displaying the control amount PV2 and the operation amount MV2 of the channel 2 as shown in (B) of FIG. 8, and if the screen switching operation is performed again, as shown in FIG. (C) is switched to display the control amount PV1 of channel 1. When the screen of the fixed value SP1 and the manipulated variable MV1 is switched again, the screen is switched to the screen for displaying the control amount PV2 of the channel 2, the set value SP2, and the manipulated variable MV2 as shown in (D) of FIG. Further, when the screen switching operation is performed, as shown in FIG. 8(E), the screen is switched to display the control amount PV1 and the current CT1 of the channel 1. If the screen switching operation is performed again, as shown in FIG. 8 ( F) is switched to the screen for displaying the control amount PV2 and the current CT2 of the channel 2, and if the screen switching operation is performed again, the screen returns to the screen of (A) of Fig. 8 .

In Fig. 9, "input" indicates a setting item regarding a process input, "output" indicates a setting item regarding a control output, "COMM" indicates a setting item regarding communication with the outside of the regulator, and "Display" indicates a display item for display. Set the project. As a setting item regarding the control output, there is a "Current" which is a setting item for current output, "Voltage" which is a setting item for voltage output, and "Event" which is a setting item for event output.

As a detailed setting item of the current output, there are "C01" to "C04" which are setting items of the current output of the channels 1 to 4. As a detailed setting item of the voltage output, there are "V01" to "V05" which are setting items of the voltage outputs of the channels 1 to 5. As a detailed setting item of the event output, there are "Event1" to "Event3" for setting the channel types 1 to 3, and "Delay1" to "Delay3" for setting the delay time of the event output of channels 1 to 3. ", and "Level1" to "Level3" for setting the threshold of the event output of channels 1~3. As described above, the setting item of the adjuster has a complicated hierarchical structure, and in order to switch to the screen of the target setting item, it is necessary to switch the complicated screen transition of the screen so as to follow the hierarchical structure shown in FIG.

[Prior Art Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2009-245174

Most users rarely operate the regulator and are not accustomed to such operations. In addition, it is also considered that there is no state of the manual of the regulator when it is needed. In a situation such as this, a complicated screen transition operation is required in the setting of the regulator, which is a troublesome work for the user.

In order to simplify the screen transition of the regulator, a means for simplifying the screen configuration such as reducing the setting item and reducing the type of the display screen is considered. However, the simplification is limited by the function expansion of the regulator and the background of the multi-input. In the regulator, there is a limitation in size. If the display is increased, the area where the button can be arranged becomes smaller, and the number of buttons is reduced. Therefore, it is also difficult to increase the display to reduce the type of the display screen. To some extent, in the case where the screen composition is complicated, the user needs to be able to easily recognize the function of the composition of the screen transition in order to make the screen change without hesitation. However, such a function has not yet been implemented.

The present invention has been made to solve the above problems, and an object thereof is to provide a regulator capable of reducing the possibility of user confusion about the operation of a screen transition.

The present invention is a regulator comprising: a control computing unit based on the measured a processing amount calculation control output value; a display unit for information display; and a display control unit that controls the display unit, wherein the display control unit is configured to perform an operation of switching a display item by a user When the transition map is displayed on the display unit, the transition map has a plurality of markers arranged in a two-dimensional array to symbolize a display item, and a line that is displayed in a display item that can be changed by one operation of the user. Configure the way the tags are connected.

Further, in a configuration example of the regulator of the present invention, when the number of control channels is plural, the display control unit is different from the mark of the display item having no channel preparation screen. The mark of the display item of the channel preparation screen is displayed.

Further, in a configuration example of the adjuster of the present invention, in the state in which the transition map is displayed, when the user selects a mark of a desired display item and performs a determination operation, or selects a When the time point of the mark of the desired display item has elapsed for a predetermined period of time, the display control unit switches the screen displayed on the display unit from the transition map to the screen on which the selected display item is displayed.

Further, in a configuration example of the regulator of the present invention, when the number of control channels is plural, when the user performs a channel switching operation, the display control unit sets the display unit The displayed screen is switched to a screen displaying the display item of the selected channel and the same type of display item as the currently displayed display item.

According to the present invention, when the user performs the operation of switching the display item, by displaying the transition map on the display unit, the user can easily recognize the configuration of the screen transition without depending on the manual of the adjuster. As a result, even if the screen configuration is complicated, the user can be reduced. The possibility of operational confusion can improve the convenience for the user.

Further, in the present invention, by displaying the mark of the display item in which the screen is prepared by the channel in a form different from the mark of the display item having no channel preparation screen, the transition map can be reduced, even if the number of channels is increased to multiple channels. It is possible to prevent the transition map from becoming large and difficult to understand, and it is not possible to display all the markers on one screen.

1‧‧‧Display Department

2‧‧‧Key input section

3‧‧‧Storage Department

4‧‧‧ analog input section

5‧‧‧ analog output

6‧‧‧Digital Input Department

7‧‧‧Digital Output Department

8‧‧‧ Computing Department

10, 12‧‧‧ mark

11, 13 ‧ ‧ line

80‧‧‧Control Computing Department

81‧‧‧Display Control Department

FIG. 1 is a block diagram showing a configuration of a regulator according to a first embodiment of the present invention.

2 is a functional block diagram of a calculation unit of the regulator according to the first embodiment of the present invention.

3 is a view showing an example of screen display and button arrangement of the regulator according to the first embodiment of the present invention.

FIG. 4 is a flowchart illustrating an operation at the time of changing the display screen of the regulator according to the first embodiment of the present invention.

FIG. 5 is a view for explaining a transition map according to the first embodiment of the present invention.

FIG. 6 is a flowchart illustrating another operation when the display screen of the regulator according to the first embodiment of the present invention is changed.

FIG. 7 is a view for explaining a transition map according to a second embodiment of the present invention.

Fig. 8 is a view showing an example of transition of a display screen of a conventional regulator.

Fig. 9 is a view showing a menu configuration of a display of a conventional regulator.

[Principle 1 of the Invention]

The inventor thought that if the display content of each screen of the regulator is simplified, it will symbolize the display item. The markers are arranged on a map that conforms to the actual operation sequence, and the user can recognize the composition of the screen transition without relying on the manual of the regulator.

[Principle 2 of the Invention]

Further, the inventors have thought that when there is a screen in which a plurality of channels display the same item due to multi-input, if the map is reduced by inductively displaying each of the same items, the composition of the recognition screen transition becomes easy. .

[First Embodiment]

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a block diagram showing a configuration of a regulator according to a first embodiment of the present invention. This embodiment is an example corresponding to the principle 1 of the above invention. The regulator includes a display unit 1 which is constituted by a display panel such as a dot matrix liquid crystal panel, a button input unit 2 which is constituted by an input device such as a tact switch or an electrostatic switch, and a storage unit 3 which stores the stored display screen data and the like. The analog input unit 4 performs an analog input process of a measured value of a processing amount such as temperature, pressure, and flow rate from a sensor; the analog output unit 5 performs control output such as current output and voltage output; and the digital input unit 6 And performing digital signal input processing for function setting of the regulator; digital output unit 7 for performing digital signal output processing for status information output and alarm output; and arithmetic unit 8 for performing control arithmetic processing and regulator In the overall control, the control calculation processing calculates the control output value such that the measured value matches the set value SP.

FIG. 2 is a block diagram showing the configuration of the arithmetic unit 8. The calculation unit 8 includes a control calculation unit 80 that calculates a control output value (operation amount MV, current value, voltage value, and the like) so that the measured value (control amount PV) of the processing amount matches the set value SP; and display control The portion 81 controls the display unit 1. As is well known, the control algorithm as the control computing unit 80 exists. For example PID.

In the present embodiment, the example in which the number of control channels is two channels will be described. In other words, the regulator of the present embodiment has two functions, and can control up to two channels at the maximum.

(A) to (E) of FIG. 3 are diagrams showing examples of screen display and button arrangement of the regulator of the present embodiment. (A) of FIG. 3 shows an example in which the measured value (control amount PV1) of the channel 1 and the control output value (the manipulated variable MV1) are numerically displayed on the display unit 1 of the adjuster, and (B) of FIG. 3 shows The display unit 1 numerically displays an example of the measured value (control amount PV1) of the channel 1, the control output value (the manipulated variable MV1), and the set value SP1, and (C) of FIG. 3 shows the measurement of the channel 1 on the numerical value of the display unit 1. An example of the value (control amount PV1), the measured value (heating current value CT1), and the control output value (the manipulated variable MV1), and (D) of FIG. 3 shows that the measured value of the channel 1 is displayed on the numerical value of the display unit 1 (control) An example of the measured value (control amount PV2) of the amount PV1) and the channel 2, (E) of FIG. 3 shows that the measured value (control amount PV1) of the channel 1 and the control output value are displayed on the display unit 1 in a graph (operation) An example of the quantity MV1) and the set value SP1. In addition, the heating current refers to a current that flows to, for example, a heater to be controlled. The heating current is measured using a current transformer as a sensor.

In the example of (A) to (E) of FIG. 3, the operation button as the key input unit 2 includes a setting button 2a for the function of the adjuster and numerical value setting, and a display button 2b for switching the screen. A CH+ button 2c for moving to a channel with a large channel number, a CH-button 2d for moving to a channel with a small channel number, and a determination button 2e for determining an operation.

Subsequently, the operation at the time of changing the display screen of the present embodiment will be described. 4 is a flow chart for explaining an operation when the display screen of the adjuster is changed. Here, the display of the regulator The part 1 displays the screen shown in (A) of FIG. The user presses the display button 2b in order to switch the display item. When the display button 2b is pressed (YES in step S100 of FIG. 4), the display control unit 81 switches the screen displayed on the display unit 1 from the screen shown in FIG. 3(A) to the screen shown in FIG. 5. The transition map (step S101 of Fig. 4).

The transition map has linear lines 11 arranged in a two-dimensional array, symbol 10a to 10i symbolizing display items, and markers arranged to be connected between the marks of the display items that can be changed by one key operation.

The function of the operation button is changed in the display of the transition map as compared with the case where the items shown in (A) to (E) of FIG. 3 are displayed. That is, the setting button 2a functions as an up arrow (↑) button for switching to a display item indicated by a mark disposed above the selected mark. The display button 2b functions as a down arrow (↓) button for switching to a display item indicated by a mark disposed below the selected mark. The CH+ button 2c functions as a left arrow (←) button for switching to a display item indicated by a mark placed on the left side of the selected mark. The CH-button 2d functions as a right arrow (→) button for switching to a display item indicated by a mark placed on the right side of the marker being selected.

In the example of FIG. 5, the following marks are arranged in a two-dimensional matrix: a flag 10a indicating that the display item is the control amount PV1 of the channel 1 and the operation amount MV1; and the control amount PV1 indicating the display item being the channel 1, the operation amount MV1, and A flag 10b of the set value SP1; a flag 10c indicating that the display item is the control amount PV1 of the channel 1, the heating current value CT1, and the operation amount MV1; and the flag 10d indicating that the display item is the control amount PV2 of the channel 2 and the operation amount MV2; The item is the control amount PV2 of the channel 2, the operation amount MV2, and the flag 10e of the set value SP2; the flag 10f indicating that the display item is the control amount PV2 of the channel 2, the heating current value CT2, and the operation amount MV2; A flag 10g indicating that the display item is the control amount PV1 of the channel 1 and the control amount PV2 of the channel 2; the flag 10h indicating the control amount PV1 of the channel 1, the operation amount MV1 and the set value SP1, and the channel 2 indicating the chart are displayed in a graph The control amount PV2, the operation amount MV2, and the flag 10i of the set value SP2.

In the example of FIG. 5, the mark 10a symbolizing the currently selected display item ((A) of FIG. 3) is different in color (for example, light blue) from the color (for example, gray) of the other marks 10b to 10i that are not selected. Display, able to identify the display items in the selection.

Since the mark 10a is connected to the marks 10b and 10d through the line 11, it is understood that the display items indicated by the marks 10b and 10d can be switched by one key operation. Similarly, the mark 10b is connected to the marks 10a, 10c, 10e through the line 11, the mark 10c is connected to the marks 10b, 10f through the line 11, the mark 10d is connected to the marks 10a, 10e, 10g through the line 11, and the mark 10e is transmitted through the line 11 and the mark 10b, 10d, 10f, 10h are connected, the mark 10f is connected to the marks 10c, 10e, 10i through the line 11, the mark 10g is connected to the marks 10d, 10h through the line 11, and the mark 10h is connected to the marks 10e, 10g, 10i through the line 11 and marked The 10i pass line 11 is connected to the marks 10f, 10h.

In a state where the transition map is displayed, the user operates the up arrow (↑) button 2a, the down arrow (↓) button 2b, the left arrow (←) button 2c, or the right arrow (→) button 2d to perform the desired The switching of the items is displayed (step S102 of Fig. 4).

Each time the up arrow (↑) button 2a, the down arrow (↓) button 2b, the left arrow (←) button 2c, and the right arrow (→) button 2d are pressed, the display control unit 81 performs corresponding operations. The update of the transition map (step S103 of Fig. 4).

For example, when the right arrow (→) button 2d is pressed once, the mark 10b is selected by the substitute mark 10a, and the display control unit 81 is updated to display the marks 10a, 10c to 10i in gray. The transition map of the mark 10b is displayed in light blue. Further, for example, when the down arrow (↓) button 2b is pressed once, the display 10d is selected instead of the mark 10a, and the display control unit 81 is updated to display the marks 10a to 10c, 10e to 10i in gray, and the mark is displayed in light blue. 10d change map. In this way, the display item can be switched.

For example, when it is desired to display the control amount PV1, the operation amount MV1, and the set value SP1 of the channel 1 in a graph, it is only necessary to select the mark 10h. Therefore, the user simply presses the right arrow (→) button 2d (selection mark 10b), then presses the down arrow (↓) button 2b (selection mark 10e), and finally presses the down arrow (↓) button 2b again (select The operation sequence of the mark 10h) is selected by the mark 10h. Alternatively, of course, press the down arrow (middle) button 2b (selection mark 10d), press the down arrow (↓) button 2b again (selection mark 10g), and finally press the right arrow (→) button 2d (selection mark) 10h) order.

After the user selects the mark of the desired display item, the OK button 2e is pressed. When the OK button 2e is pressed (YES in step S104 of FIG. 4), the display control unit 81 switches the screen displayed on the display unit 1 from the transition map to the screen for displaying the currently selected display item (step 4 of FIG. 4). S105). As described above, when the mark 10h is selected, the screen of (E) of FIG. 3 is displayed. Further, if the flag 10i is selected, instead of (E) of FIG. 3, the control amount PV2, the operation amount MV2, and the set value SP2 of the channel 2 are displayed in a graph.

The user can do nothing after selecting the desired display item's mark. When a predetermined period of time has elapsed from the previous key operation (YES in step S106 of FIG. 4), the display control unit 81 causes the currently selected display item to be displayed on the display unit 1 (step S105).

After the display button 2b is pressed down, no other buttons are pressed, and after a certain In the case of time, the screen displayed before the transition map is displayed is returned (step S105). For example, in a state where the screen shown in (A) of FIG. 3 is displayed, when the display button 2b is pressed and the transition map is displayed, if the other button is not pressed and a certain time has elapsed, the display in the current selection is displayed. The item is marked 10a and returns to the screen of (A) of Fig. 3.

In addition, the screen switching between channels can be realized without changing the map. This action will be described using FIG. 6. Similarly to the above, the screen shown in FIG. 3(A) is displayed on the display unit 1 of the adjuster.

In order to switch the channel to be displayed, the user presses the CH+ button 2c or the CH- button 2d. Here, in order to switch from channel 1 to channel 2, press CH+ button 2c. When the CH+ button 2c or the CH-button 2d is pressed, the display control unit 81 switches the screen displayed on the display unit 1 to the display item of the channel selected by the CH+ button 2c or the CH- button 2d, and is currently displayed. The display item displays the same type of display item screen (step S202 of FIG. 6).

For example, when the CH+ button 2c is pressed in a state where the screen shown in (A) of FIG. 3 is displayed, the screen is switched to the control amount PV2 of the numerical value display channel 2 and the operation amount MV2. When the CH+ button 2c is pressed in the state where the screen shown in (B) of FIG. 3 is displayed, the screen is switched to the control amount PV2 of the numerical value display channel 2, the operation amount MV2, and the set value SP2. When the CH+ button 2c is pressed in a state where the screen shown in (C) of FIG. 3 is displayed, the screen is switched to the control amount PV1 of the numerical value display channel 2, the heating current value CT2, and the operation amount MV2. When the CH+ button 2c is pressed while the screen shown in (E) of FIG. 3 is displayed, the screen is switched to display the control amount PV2 of the channel 2, the operation amount MV2, and the set value SP2.

As described above, in the present embodiment, when the user performs the operation of switching the display item, the user can display the transition map on the display unit 1, and the user can be independent of the regulator. The operation manual makes it easy to identify the composition of the screen transition. As a result, even if the configuration of the multi-function screen of the adjuster is complicated, the possibility of the user being confused with the operation can be reduced, and the convenience for the user can be improved.

[Second Embodiment]

Next, a second embodiment of the present invention will be described. In the present embodiment, the configuration and processing flow of the regulator are the same as those in the first embodiment, and therefore, the symbols in FIGS. 1, 4, and 6 will be described. This embodiment is an example corresponding to principle 2 of the above invention.

In the state where the screen shown in (A) of FIG. 3 is displayed, for example, the operation when the user presses the display button 2b to switch the display item is the same as that of the first embodiment.

When the display button 2b is pressed (YES in step S100 of Fig. 4), the display control unit 81 switches the screen displayed on the display unit 1 to the transition map as shown in Fig. 7 (step S101 in Fig. 4).

In the same manner as in the first embodiment, the transition map has the marks 12a to 12e which are arranged in a two-dimensional array and which symbolize the display items, and are arranged to be connected between the marks of the display items which can be changed by the one-touch operation. Line 13. The difference from the first embodiment is that, when the number of control channels is plural, the mark of the display item on which the screen is prepared by channel is drawn in a form different from the mark of the display item not having the channel preparation screen.

Similarly to the first embodiment, when the number of control channels is two channels, the screen on which the display items are the control amount PV and the operation amount MV, and the screen on which the display items are the control amount PV, the operation amount MV, and the set value SP, The display items are screens of the control amount PV, the heating current value CT, and the operation amount MV, and the screens for displaying the control amount PV, the operation amount MV, and the set value SP are prepared in two channels.

Therefore, for the mark indicating that the display item is the control amount PV and the manipulated variable MV 12a, a flag 12b indicating that the display item is the control amount PV, the operation amount MV, and the set value SP, a flag 12c indicating that the display item is the control amount PV, the heating current value CT, and the operation amount MV, indicating that the control amount PV is displayed in a graph, and the operation The quantity MV and the flag 12e of the set value SP are forms in which a plurality of marks are superimposed. Through such a mark display, the user can recognize that the display item is the same type of screen prepared by the channel. As long as the user can recognize that the screen has a plurality of channel shares, the number of overlapping marks may be the same as the number of channels, or may be less than the number of channels.

On the other hand, the screen for the control amount PV1 of the channel 1 and the control amount PV2 of the channel 2 is solved by one screen. Therefore, the flag 12d indicating that the display item is the two control amounts PV (PV1 and PV2) becomes A single marker is displayed.

Similarly to the first embodiment, the mark 12a indicating the currently selected display item ((A) of FIG. 3) is different in color (for example, light blue) from the color (for example, gray) of the other marks 12b to 12e that are not selected. Color) to display.

Similarly to the first embodiment, each time the transition map is displayed, the up arrow (↑) button 2a, the down arrow (↓) button 2b, the left arrow (←) button 2c, and the right arrow (→) are pressed. The display control unit 81 performs an update of the transition map corresponding to the operation by any one of the buttons 2d (step S103 of Fig. 4).

For example, when it is desired to display the control amount PV1, the operation amount MV1, and the set value SP1 of the channel 1 in a graph, the flag 12e may be selected. Therefore, the user only needs to select the mark 12e in the order of the operation of pressing the right arrow (→) button 2d (selection mark 12b) and then pressing the down arrow (↓) button 2b (selection mark 12e). Or, of course, you can press the down arrow (↓) button 2b (selection mark 12d), then press the right arrow (→) button 2d (selection mark Record the order of 12e).

After the user selects the mark of the desired display item, the OK button 2e is pressed. When the OK button 2e is pressed (YES in step S104 of FIG. 4), the display control unit 81 switches the screen displayed on the display unit 1 from the transition map to the screen for displaying the currently selected display item (step S105 of FIG. 4). ). As described above, when the mark 12e is selected, the screen of (E) of Fig. 3 is displayed. As described in the first embodiment, the user can do nothing after selecting the mark of the desired display item.

In addition, the selection operation of the up arrow (↑) button 2a, the down arrow (↓) button 2b, the left arrow (←) button 2c, and the right arrow (→) button 2d is for switching the currently selected display item to another type. The operation of the display item does not change the channel through the operation of these buttons. In order to switch the channel you want to display, just press CH+ button 2c or CH- button 2d. The action at this time is as explained in FIG.

If the number of control channels is increased, it is necessary to consider that the picture transition becomes complicated corresponding to an increase in the number of channels. In the present embodiment, the mark of the display item of the screen prepared by the channel is different from the mark of the display item which is not displayed by the channel preparation screen, and the mark of the display item of the screen prepared for the channel is the same for each The item of the type is displayed in common, and thus the transition map can be reduced, and even if the number of channels is increased to four channels, it is possible to prevent the transition map from becoming large and difficult to understand, and it is impossible to display all the marks on one screen.

The regulator described in the first and second embodiments can be realized by a computer including a CPU (Central Processing Unit), a storage device, and a interface, and a program for controlling these hardware resources. The CPU executes the processing described in the first and second embodiments in accordance with the program stored in the storage device.

[Industrial availability]

The present invention can be applied to an information display technology of a regulator.

1‧‧‧Display Department

2‧‧‧Key input section

3‧‧‧Storage Department

4‧‧‧ analog input section

5‧‧‧ analog output

6‧‧‧Digital Input Department

7‧‧‧Digital Output Department

8‧‧‧ Computing Department

Claims (4)

A regulator includes: a control calculation unit that calculates a control output value based on the measured amount of processing; a display unit that is used for information display; and a display control unit that controls the display unit, wherein the regulator is characterized by The display control unit displays a transition map on the display unit when the user performs an operation of switching the display item, and the transition map has a plurality of markers arranged in a two-dimensional matrix to symbolize the display item; It is arranged such that it is connected between the marks of the display items that can be changed by one operation of the user. The regulator of the first aspect of the invention, wherein the display control unit displays the channel by a different form from the mark of the display item not having the channel preparation screen when the number of control channels is plural Prepare the mark of the display item of the screen. The regulator according to claim 1 or 2, wherein the display control unit selects a mark of a desired display item and performs a determination operation when the user displays the transition map, or When a certain time has elapsed since the time point at which the desired display item is selected is selected, the screen displayed on the display unit is switched from the transition map to the screen on which the selected display item is displayed. The regulator of claim 1 or 2, wherein the display control unit is in the case where the number of control channels is plural When the operation of switching the channel is performed, the screen displayed on the display unit is switched to a screen displaying the display item of the selected channel and the display item of the same type as the currently displayed display item.