JPS61183712A - Process monitor processing method of sequencer - Google Patents

Abstract

PURPOSE:To cope easily with a change of a process display by installing a color change processing module to a process monitor processing of a sequence controller. CONSTITUTION:A sequence controller is constituted of process input/output devices 90, 100, a sequence input/output memory 80, a memory 40 for storing a sequence program 41, etc., a display part 60 and its control part 50, a CPU10, etc. In this case, a color change processing module 30 for executing a color change display based on the sequence input/output memory 80 and a color change data 42 is provided. This module 30 detects a state of color change coils 1-(n) in the sequence input/output memory 80, inputs color information and display information contained in the color change data 42 with respect to a place where a variation has been generated, outputs them to a display device control part 50, and executes a color change display of a plant flow. In this way, a color change monitor processing display of a process flow can be controlled by the sequence program, and it is possible to cope easily with its change.

Description

[Detailed description of the invention]

[Field of Application of the Invention] The present invention relates to a process monitoring processing method for a sequence controller, and particularly to a monitoring processing method suitable for performing process monitoring using a sequence program that defines process control.

[Background of the invention]

A sequence controller that performs process control not only performs sequence control using a later program or POL language, but also displays the plant flow of the equipment to be controlled on a color monitor. Additionally, there is a demand for a sequence controller that has a monitoring function by displaying equipment symbols on a monitor screen, tank levels, and contents in piping in different colors depending on the operation of the control equipment. This is based on the created sequence program found in conventional sequence control monitor methods. Monitoring methods whose main purpose is to monitor ladder symbols that match the dynamic operation of the process in full tones and halftones have no visibility and are displayed in a single color, making it impossible to display a variety of conditions and operations, and the monitoring function was insufficient. Furthermore, in the case of color change monitoring using a color monitor, external signals from the process input device and internal calculation results of the sequence logic (ON-OFF bit information) L BASIC, F
ORTRAN, etc. (7) Determined by a general-purpose language program,
The method used was to define and display color specifications based on the coordinates of the color monitor screen. In these conventional methods, (1) it is necessary to create a process control sequence program and a monitoring general-purpose language program separately in different languages; (2
) A program in a general-purpose language is more difficult to create than a sequence program, and is also not easy to modify, so it takes an enormous amount of time to create it. (3) In order to define the color change process, in addition to a device that creates a sequence program, a program creation device that supports a general-purpose language or a program creation device that has both functions is required. (4) There were problems such as not being able to easily deal with changes in equipment and processing. [Object of the Invention] An object of the present invention is to provide a plant monitoring method using a color monitor in a sequence controller. By providing a color change module, it is an object of the present invention to provide a monitoring processing method for a sequence controller that performs color change monitoring on a process monitor screen and message output in addition to a control function using a sequence program. [Summary of the Invention] The present invention is characterized in that, in a color change processing method of a sequence controller, a color change mode is provided in which both functions of sequence information and a color change general-purpose language are standardized, and the color change mode is provided with the following functions. (1) In a display device such as a color monitor or a personal computer, a color change display unit consists of a color and a display coordinate address. (2) The color change display unit has a one-to-one correspondence with the input/output bits of the sequence controller and the bit results based on the internal calculation logic, and also corresponds with any continuous process input/output or memory address of the internal relay. (3) Interlocking and mutual checking with equipment for color change monitoring is performed by a sequence program, and bit ON for two-color change is performed by a sequence program. [Embodiment of the Invention] An embodiment of the present invention will be described below. FIG. 1 is a block diagram of a sequence controller to which the monitoring processing method of the present invention is applied. This system configuration is
Process input device 90 that receives input signals from external equipment
．． Process output device 100 that outputs signals to external equipment
．． A sequence input/output memory 80, a sequence program 41 that defines a control procedure and a color change procedure, a programming device 70 that forms the sequence program 41, a sequence processor 20 that processes the sequence program,
Monitoring screen data 43 which is plant flow original pictorial display information
．． Sequence program 41, color change data 42, and monitoring screen data 43, which are color change information when the monitoring screen is online.
, a display device 60 that displays the plant flow, and a display control section 50 that controls the display device 60. Color change processing module 30 that performs color change display based on sequence input/output memory and color change data. CPU 10 which is a processing device
, and a bus 110 connecting them.゛Fig. 2 shows a processing block diagram of the main mechanism of the monitoring processing method according to the present invention divided by a certain color change display module.
The color change display method is that when creating a process flow screen, the 6 color change processing module 30, which simultaneously creates the original picture of the screen and color change in a general-purpose language, uses a sequence input/output memory 80.
(OFF-+ON, O
N→0FF) is detected, and the color information and display information in the color change data 42 are captured based on the 0N10FF of the corresponding color change coil only at the location where the change has occurred, and outputted to the 1 display device control unit 50 to display the color of the plant flow. Performs alternate display. FIG. 3 shows an example of a program for issuing a color change instruction using a sequence program. In the sequence program, the external output relay is controlled by the arithmetic logic of the external input/output relay and the internal relay. Similarly, for color change monitoring of the process flow, a sequence program is created to turn on any color change coil when any external output relay is turned on. As a result, the color changing coil is output in accordance with the external signal output. FIG. 4 shows an example in which the method shown in FIG. 3 is extended to a plurality of color changing coils. Color changing coils 1 to n can change the color of n locations on the process monitoring screen. FIG. 5 shows a configuration example of the color change data shown in FIG. 1 that is processed by the color change processing module. In order to correspond to the monitoring screen data that becomes the original picture, - undecided 'J, line,
Arrangement information and color change coil Nα 2 colors Nα according to symbols etc.
In the case of character (message) display, it is further comprised of character information. This monitoring processing method provides an intelligent terminal such as a personal computer with a single color change processing module 30, color change data 42, monitoring screen data 43, a display control unit 50, a display device 60, and a communication control device with a sequence controller. Thus, process monitoring can be performed by importing the contents of the sequence input/output memory of the sequence controller via the communication control device. Even in this case, color change display control can be performed using a sequence program. [Effects of the Invention] According to the present invention, by installing a color change processing module in process monitoring processing of a sequence controller,
The process flow color change monitoring process display can be controlled by a sequence program, and compared to conventional display processing methods, a general-purpose language program creation device is not required, the correspondence between the process control sequence and the color change display is clear, and Easily adapts to process display changes.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of the sequence controller of the present invention, FIG. 2 is a processing flowchart of the color change processing module,
Figure 3 shows the color change program side of the sequence program.
Figure 4 shows the general extension side of the color change program, and Figure 5 shows the composition reference survey of the color change data.

Claims (1)

[Claims] 1. A color change processing module is provided in a sequence controller that performs process control based on the plant status and a sequence program prepared in advance, and color change monitoring of the plant flow displayed on a color monitor is performed in a sequence. A process monitoring method for a sequencer characterized by using a program. 2. Process monitoring of a sequencer according to claim 1, characterized in that a personal computer is used as the color monitor, and the color change monitoring of the plant flow displayed on the personal computer is performed by the sequence program. Processing method.