JPH08320709A - Sequencer input device - Google Patents

Abstract

PURPOSE: To decrease the number of input cards of a sequencer and the number of cores of a cable by converting setting data into binary numeric data. CONSTITUTION: The sequencer input device, equipped with the sequencer 2a having a sequence control means 7 controlling the operation of a plant equipment, etc., and an input card 6a inputting setting data on control and a console panel 1a having a setting switch 3 for setting control over the sequencer 2a, is equipped with an input converting means 11 which inputs the control signal of the sequencer 2a set with respective setting switches 3, encodes and converts it into binary data, and outputs the data to the input card 6a of the sequencer 2a and a binary data analyzing means 10 which analyzes the binary data of the input card 6a and inputs the result to the sequence control means 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an input device for operating equipment such as a plant with a sequencer.

[0002]

2. Description of the Related Art Generally, when setting equipment such as a plant, there are various setting items, and it is difficult to confirm. Therefore, the setting procedure is mistaken or the setting item is selected twice. May cause A sequencer is used for setting equipment such as a plant in order to prevent such a setting error.

FIG. 7 is a basic configuration diagram of a conventional sequencer input device. In this figure, 1 is a console for setting inputs, 2 is a sequencer set by the console 1, and 3 is control for the sequencer 2. With N setting switches,
N is an arbitrary integer of 1 or more. 4 is a current supply means for supplying a current for generating a setting data signal to the setting switch 3, 5 is a cable composed of a plurality of core wires connecting the console 1 and the sequencer 2, and 6 is a setting from the console 1. An input card 7 for inputting data is a sequence controller which is a means for performing sequence control based on the setting data from the input card 6.

The sequencer 2 is arranged near a plant or the like and is provided with an input card 6 and a sequence control section 7. By operating each setting switch 3 on the operator console 1, the setting data is temporarily stored in the sequencer 2. The input data is taken into the input card 6, and the setting data is checked by the sequence control unit 7 in the sequencer 2 for double selection. If there is no problem as a result of this check, the plant P
Is to drive.

[0005]

Since the conventional sequencer input device is constructed as described above, the sequencer 2
The number of input cards 6 and the number of cores of the cables 5 are required for the number of the setting switches 3. Especially, when the distance between the sequencer 2 and the operator console 1 is large, it costs a lot to install the cables. There was also the problem that maintenance would not be easy.

The present invention has been made to solve the above problems, and converts a setting signal by a setting switch into binary numerical data and inputs the numerical data to a sequencer, whereby the input card of the sequencer is The purpose is to reduce the number of points and the number of cable cores, reduce cable construction costs, and facilitate maintenance. Also, when displaying the setting data set by the console and sent to the sequencer for confirmation, by inputting binary numerical data from the sequencer to the console and converting it to display data, The number of output cards and the number of cable cores are reduced to reduce cable construction costs and facilitate maintenance.

[0007]

A sequencer input device according to the invention of claim 1 includes a sequencer 2a having a sequence control means 7 for controlling the operation of plant equipment and an input card 6a for inputting control setting data. In a sequencer input device having a console 1a having a setting switch 3 for setting the control of the sequencer 2a, a control signal of the sequencer 2a set by each of the setting switches 3 is input and encoded into binary data. Convert
Data conversion means 8 for outputting to the input card 6a of the sequencer 2a, and binary number data analysis means 10 for analyzing the binary number data of the input card 6a and inputting it to the sequence control means 7 are provided. It is a thing.

A sequencer input device according to a second aspect of the present invention comprises a sequence control means 7 for controlling the operation of plant equipment, an input card 6a for inputting control setting data, and an output card 12 for outputting the control setting data. An operation console 1b having a sequencer 2b having the following, a setting switch 3 for setting the control of the sequencer 2b, and a setting display means 14 for displaying the setting state of the setting switch 3 based on the output of the output card 12. The sequencer input device further comprises a data reverse conversion means 15 for decoding and converting binary setting data output from the output card 12 into data displayed by the setting display means 14. Is.

[0009]

According to the invention of claim 1, the control signal of the sequencer 2a set by each setting switch 3 is the data converting means 8
Is encoded and converted into binary number data and sent to the input card 6a of the sequencer 2a.
The binary data sent to a is analyzed and input to the sequence control means 7.

According to a second aspect of the present invention, the control signal of the sequencer 2b set by each setting switch 3 is encoded and converted into binary number data by the data converting means 8,
When the data is sent to the sequencer 2b and checked by the operator console 1b, the binary data is output from the output card to the operator console 1b, and the binary setting data is converted by the data reverse conversion means 15. After that, the setting display means 1
Displayed at 4.

[0011]

【Example】

Example 1. Embodiment 1 of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the first embodiment. 1a is an operator console for setting inputs, 2a is a sequencer set by the operator console 1a, 3 is N setting switches for setting control of the sequencer 2a. , N is an arbitrary integer of 1 or more. Reference numeral 4 is a current supply means for supplying a current to the setting switch 3 to generate a setting data signal.
Is a cable for connecting the console 1a and the sequencer 2a, which is composed of, for example, n core wires, where n is an integer equal to or less than N and transmits binary setting data. 6a
Is an input card for inputting binary setting data from the console 1a, 7 is a sequence control unit which is a means for performing sequence control based on the setting data from the input card 6a, and 8 is set by the setting switch 3. It is a data conversion means for inputting a control signal and encoding it into binary data. The data conversion means 8 is, for example, a high speed CMOS using silicon gate CMOS technology as shown in FIG.
An encoder is used. The EO and GS outputs are outputs showing the operation mode of the encoder, and are applied when increasing the number of bits by cascade connection. A diode protection circuit is added to all inputs to protect the device from electrostatic damage. The truth table for this line is shown in FIG. In FIG. 1, reference numeral 9 is a current detecting means for detecting a current flowing when any one of the setting switches 3 is set, and the data converting means 8 and the current detecting means 9 constitute an input converting means 11. Reference numeral 10 is a binary number data analyzing means for analyzing binary number data and inputting it to the sequence controller 7, P is set by the sequencer 2a,
It is a controlled plant device.

Next, the operation will be described. For the data set by operating the setting switch 3, for example, when the high-speed CMOS encoder exemplified above is used for the data conversion means 8, the current flowing by detecting one of the setting switches 3 is detected. The current detection means 9 is
The enable input (EI) is set to "L" level, and as shown in FIG. 3, the highest "of the eight input signals 0 to 7" is selected.
The L "level signal is detected, and the corresponding signal is output to the signal lines A0 to A2 by the binary code of the negative logic. When the current detecting means 9 does not detect the current, the enable input (EI) is set to"". By setting to H "level, encoding is prohibited and all outputs become" H "level. Thus, the input to the encoder, that is, the input conversion means 11 is
The significant setting switches 3 are converted into binary numerical data attached to each setting switch 3.

The binary setting data converted as described above, for example, the switch number represented by a binary number is transmitted to each input card 6a connected to the sequencer 2a by the n cables 5a. The setting data input to each of the input cards 6a is analyzed by the binary number data analyzing means 10 and converted into the form of data to be input to the sequence controller 7. This converted setting data indicates which setting switch 3 of the operator console 1a is significant, and specifically, for example, control data and numerical values indicating that a certain part of the plant equipment P is moved several centimeters. It may be data or the like. In this way, the sequence control unit 7, which receives the data obtained by analyzing the binary number, controls the electric power and the like to drive the plant equipment P.

As described above, by transmitting the data converted into the binary number from the operator console 1a to the sequencer 2a, the number of output points of the data converting means 8 changes depending on the number of the setting switches 3. For example, the data conversion is performed. Assuming that the number of output points of the means 8 is 8, the number of setting switches 3 is 255.
The number of cores of the cable 5a and the number of points of the input card 6a of the sequencer 2a can be expressed up to 24 as data.
7 points can be reduced. In the case of the high-speed CMOS encoder, each EO and GS output is an output indicating the operation mode of this encoder.
This is applied when increasing the number of bits, and it is possible to connect multiple encoders that are the same or different using each of these outputs and support various types of setting data depending on how they are arranged to reduce the number of output points. Is also possible.

Example 2. A second embodiment of the present invention will be described with reference to FIG. 4 that are the same as those in FIG. 1 are designated by the same reference numerals. 1b is an operator console, 2b is a sequencer, 12 is an output card for outputting sequence control setting data, 13 is a cable consisting of a plurality of core wires connecting the operator console 1b and the sequencer 2b, and the binary setting data is sent to the sequencer 2b. To the console 1b. Reference numeral 14 denotes a setting display means for displaying the setting state of the setting switch 3 based on the output of the output card 12, and a selection indicator lamp 14a provided corresponding to each setting switch is provided. 15 is output from the output card 12 2
It is binary number data reverse conversion means for decoding and converting the setting data of the base number into the data displayed by the setting display means 14. The inverse conversion means 15 is, for example, as shown in FIG. 5, a high-speed CMOS using silicon gate CMOS technology.
A decoder is used. All of these inputs have diode protection circuitry added to protect the device from electrostatic damage. FIG. 6 is a truth table of the circuit of FIG. In FIG. 4, reference numeral 16 is a setting data control means for controlling binary number setting data input from the input card 6a, and 1
Reference numeral 7 denotes a setting data storage means for storing the setting data in the sequencer 2b. In the present embodiment, the setting display means 14 is configured based on the data output from the output card of the sequencer 2b as described above, and each setting switch 3 is configured.
In order to turn on the setting switch selection indicator light 14a provided corresponding to, the binary numerical data output from the sequencer 2b is input, and the lighting position of the selection indicator light 14a is analyzed based on this. The decimal data inverse conversion means 15 is provided on the console 1b.

Next, the operation will be described. Example 1 above
As described above, the control data of the sequencer 2b set by the setting switch 3 of the console 1b is transmitted in the binary setting data format and input to the input card 6a. The input setting data is controlled by the setting data control means 16 of the sequencer 2b and is output to the output card 12 as binary data. This 2
The setting data of the base number can be output from the output card 12 to the cable 13
It is transmitted to the console 1b by and is input to the binary number data reverse conversion means 15 provided in the console 1b. As the binary data inverse conversion means 15, for example, a high speed CMOS decoder using the above silicon gate CMOS technology can be used. In this type, as shown in FIG. 6, when the enable input (G1) is set to "H" level and the circuit is in the enabled state, only the output selected by the binary address input of A, B and C is "L". "H" level, and all non-selected outputs are normally "H" level. As shown in FIG. 6, when the enable input G1 is set to "L" level or either G2A or G2B is set to "H" level, decoding is prohibited and all eight outputs are set to "H" level. This enable input can control the operation when a plurality of high-speed CMOS decoders are used, and facilitates application to a cascade connection or a memory address decoder. Also in the second embodiment, for example, the operation control is performed by the enable input, and a plurality of the same or different decoders are connected to support various input / output data formats.

As described above, the binary data inverse conversion means 15 decodes and converts the data into the data indicating the lighting position of the selection indicator lamp 14a, and inputs the data to the setting display means 14 of the console 1b. In this way, one of the selection indicator lamps 14a corresponding to the operated setting switch is turned on. From this, it is possible to check which setting switch has been operated. In the second embodiment, the setting is displayed by the lamp display of the selection display lamp 14a.
The present invention can be applied to the light emission of, and the display of characters and figures on the LCD. Further, which setting switch has been operated may be displayed by another method such as character display.

The setting data control means 16 transmits the setting data from the input card 6a to the output card 12 as described above so that the check can be made on the console 1b side. When the completion of this check is determined, this setting data is output to the binary number data analysis means 10, and thereafter the above-described first embodiment is performed.
Similarly to the above, the sequence control unit 7 controls the plant equipment P.

Further, by causing the setting data control means 16 to store the setting data input to the input card 6a in the setting data storage means 17, thereafter, the setting data in the input card 6a is changed to new setting data. However, it can be stored as the previous setting data. For example, the storage / calling switch provided in the setting switch 3 stores the data to be stored in the setting data storage means 1
It is possible to store the data in the input card 6a and the output card 12 or call both of them when necessary.

When the console 1b is provided with the setting display means 14 so that the setting of the setting switch 3 can be confirmed, the setting data actually input to the sequencer 2b can be confirmed by performing the procedure of the second embodiment. By making the data transmission between the console 1b and the sequencer 2b at this time into binary data, the points of the input card 6a and the output card 12 for inputting / outputting the data of the sequencer 2b, and the cable used for data transmission The number of cores 5a and 13 can be reduced.

[0021]

According to the invention of claim 1, the sequencer control signal set by each setting switch of the console is
It is input to the data conversion means, encoded into binary number data and converted, this data is output to the input card of the sequencer, the binary number data of the input card is analyzed by the binary number data analysis means, and the sequence control means Since the number of input cards of the sequencer and the number of cable cores are reduced, the cable construction cost can be reduced and maintenance can be facilitated.

According to the second aspect of the present invention, the binary setting data output from the output card of the sequencer is input to the data inverse conversion means of the operator console and decoded and converted into the data displayed by the setting display means. Therefore, it is possible to reduce the number of output cards of the sequencer and the number of cores of the transmission system path cable from the sequencer 2b to the console 1b, thereby reducing the cable construction cost and facilitating maintenance.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a first embodiment of a sequencer input device of the present invention.

FIG. 2 is a logic circuit diagram showing an example of data conversion means used in the first and second embodiments of the sequencer input device of the present invention.

FIG. 3 is a truth value 1 of the data conversion means used in the first and second embodiments of the sequencer input device of the present invention.
It is a figure showing an example.

FIG. 4 is a block diagram showing a configuration of a second embodiment of a sequencer input device of the present invention.

FIG. 5 is a logic circuit diagram showing an example of a data reverse conversion means used in a second embodiment of the sequencer input device of the present invention.

FIG. 6 is a diagram showing an example of a truth value of the data reverse conversion means used in the second embodiment of the sequencer input device of the present invention.

FIG. 7 is a block diagram showing a configuration of a conventional sequencer input device.

[Explanation of symbols]

1, 1a, 1b console, 2, 2a, 2b sequencer, 3 setting switch, 4 current supply means, 5, 5a,
13 cable, 6, 6a input card, 7 sequence controller, 8 data converter, 9 current detector, 1
0 binary number data analysis means, 11 input conversion means, 12
Output card, 14 setting display means, 14a selection indicator light, 15 data reverse conversion means, 16 setting data control means, 17 setting data storage means.

Claims (2)

[Claims] 1. A sequencer comprising a sequencer having sequence control means for controlling operation of plant equipment and the like and an input card for inputting control setting data, and a console having a setting switch for setting control of the sequencer. In the input device, data conversion means for inputting the control signal of the sequencer set by each of the setting switches, encoding and converting into binary number data, and outputting to the input card of the sequencer, and binary number data of the input card. And a binary number data analyzing means for analyzing and inputting to the sequence control means. 2. A sequencer having sequence control means for controlling operation of plant equipment, an input card for inputting control setting data, and an output card for outputting the control setting data, and control for this sequencer. In a sequencer input device provided with a setting switch and a setting console having a setting display means for displaying the setting state of the setting switch based on the output of the output card, the binary setting data output from the output card, A sequencer input device, comprising: a data reverse conversion means for decoding and converting the data displayed by the setting display means.