JPH0455903A - Supervisory device for order start sequence - Google Patents

Abstract

PURPOSE:To guide the dealing with the start conditions at an early state by displaying the start conditions where is is estimated that the drive condition that the drive condition signal of a block is changed to a satisfied state from an unsatisfied state by a start sequence of the prescedent stage independently of the normal condition satisfied display with a block under-execution signal. CONSTITUTION:When the start conditions are not satisfied, a display control means 2a decides whether the start conditions are related to the precedent and next automatic blocks or not. When it is estimated that the conditions are satisfied with the end of the operation of a precedent block, the satisfied conditions are displayed independently of the display of other unsatisfied conditions, e.g., a flicker display secured for the continuous display with use of the automatic under-execution signals RUN1 and RUN2. Thus it is possible to early guide the dealing with the start conditions even at an optional time point except the time right before the start of the automatic block.

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention relates to a device for monitoring a sequential start sequence in a general industrial plant, and in particular, the sequential start sequence is divided into a plurality of blocks and The present invention relates to an ordered activation sequence monitoring device that monitors the activation condition of each block when the blocks are executed continuously and automatically.

(Prior Art) FIG. 3 is a block diagram showing the flow of operations in so-called automatic block units, in which a plurality of sequential start sequences are grouped into blocks that are automatically operated, as an example of a sequential start sequence in a plant. be.

Generally, an order starting sequence consisting of a plurality of automatic blocks starts its operation in response to a certain kind of start command, but here, automatic sequence 1, which is an automatic block, starts its operation using a start push button signal as a start command. Automatic sequence 1 sequentially drives a plurality of machines to realize process 1 in the plant. automatic sequence 1
After completing these operations, it gives a start command to automatic sequence 2 as the next automatic block. In automatic sequence 2, a plurality of machines are sequentially driven to realize the next process 2. Furthermore, when the sequence of automatic sequence 2 ends, a start command is given to the next automatic block.

Thereafter, the same operation is repeated for each automatic block to complete the series of processing.

FIG. 4(a) shows the detailed processing procedure of automatic sequence 1.
FIG. 4(b) is a flowchart showing detailed processing procedures of automatic sequence 2.

Here, when a start command is given to automatic sequence 1,
Check the activation conditions of own block (step 101)
). As a result of this check, if all starting conditions are satisfied, the machine 1 is moved forward (step 102). Next, machine 1
The machine 2 is checked to see if it has reached the forward limit position (step 103), and if it has reached the forward limit position, the machine 2 is raised (step 104). Next, check whether the machine 2 has reached the upper limit position (step 105).
If the upper limit position has been reached, the process proceeds to the next step.

On the other hand, when a start command is given to automatic sequence 2, the start condition of the own block is checked (step 201).
. As a result of this check, if all starting conditions are satisfied, the machine 2 is lowered (step 202). Next, it is checked whether the machine 2 has reached the lower limit position (step 203), and if it has reached the lower limit position, the machine 2 is opened (step 204). Next, the machine 2 is at the open limit position,
In other words, it is checked whether the "eyes open" state has been reached (step 205), and if the "eyes open state" has been reached, the process proceeds to the next step.

FIG. 5 is a block diagram showing the configuration of a conventional sequential activation sequence monitoring device that monitors this sequential activation sequence. In the figure, automatic block activation condition signals ILI and IL2 are sent to display control means 2 via input means 1. The display control means 2 receives these activation condition signals ILI.
And 1L2 distinguishes whether the activation condition for each activation item of the automatic block is satisfied or not and is displayed on the display means 3.

FIG. 6 is an example of a display screen for monitoring the starting conditions for the automatic sequence 2 described above. In this case, an automatic block name 11 is displayed at the top of the screen to distinguish each automatic block, and below it is a sub-name 12 to explain the content.
is displayed. Below this sub-name 12, an item number 13, a starting condition name 14, and a state 15 of whether the starting condition is satisfied or not satisfied are displayed for each starting item from left to right.

Here, in the flowchart of FIG. 4(a), machine 2 is
It includes a processing step of "moving from the lower limit position to the upper limit position". If so, a processing step of "moving the machine 2 to the lower limit position" should be included after step 105.

If, during the execution of automatic sequence 1, the display shown in FIG. 6 is displayed in order to monitor the starting conditions of automatic sequence 2, the
If you do not complete the process of moving the
The start condition for machine 2 is displayed as not being met, and the start condition for machine 2 is displayed as unfulfilled, and the start condition for machine 2 is
The condition "move to the upper limit position" is satisfied. The operator takes action while confirming that these conditions are met.

(Problem to be Solved by the Invention) In the above-mentioned conventional sequential activation sequence monitoring device, the activation condition for the subsequent automatic block is created by the automatic block in the previous stage, and the activation condition is created regardless of the automatic block in the previous stage. There was no distinction made in terms of presentation. For this reason, the operator could not judge whether the actual activation condition was satisfied until immediately before the automatic block was activated.

In other words, as explained in Fig. 6, immediately after starting automatic sequence 1, the conditions are that machine 2 is at the "ascent limit of machine 2" and machine 3 is at the closing limit position, that is, "machine 3 closes". Even if both are not true, automatic sequence 2
Immediately after the start of automatic sequence 1, the condition of "machine 2 rise limit" is expected to be met, so the operator must
It is only necessary to take measures so that the condition of being in "machine 3 closed limit" is satisfied.

However, when there are a large number of automatic blocks and a large number of activation conditions, it is difficult to distinguish between them, and it is sometimes impossible to take action until immediately before the automatic block starts. In such a case, there is a problem that the order activation sequence becomes stagnant and work efficiency decreases.

This invention has been made to solve the above problems, and an object of the present invention is to provide an ordered start sequence monitoring device that can provide guidance on how to deal with start conditions at an early stage even if the automatic block is not immediately before the start of the automatic block. shall be.

[Structure of the invention]

(Means for Solving the Problems) The present invention organizes a plurality of sequential activation sequences that are automatically and continuously operated into a plurality of automatic blocks, and displays whether the activation conditions of these automatic blocks are met or not for each activation item. In the apparatus for displaying and monitoring on a means, an input means for inputting a starting condition signal and an execution signal for each automatic block, and displaying on the display means whether the starting condition of the block is satisfied or not based on the starting condition signal. At the same time, display control means displays a starting condition for which the starting condition of the block is predicted to change from unfulfilled to satisfied due to the preceding starting sequence, in a manner distinguished from a normal condition satisfied display by the block execution signal. It was equipped with the following.

(Function) In the present invention, when the starting condition is not satisfied, if the starting condition is predicted to be satisfied upon completion of the previous automatic block, the normal failure is determined by the previous automatic block execution signal. Since it is displayed separately from the display, it is possible to provide early guidance on how to deal with the activation condition immediately before the start of the automatic block.

(Embodiment) FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. In the same figure, an order starting sequence monitoring device 10
a is the activation condition signal IL of two successive automatic blocks
L, IL2 and running signal RUNI.

It is comprised of human power means 1a for inputting RUN2, display control means 2 for displaying and processing each manually inputted signal, and display means 3 for displaying the processing results.

The operation of this embodiment configured as described above will be described below with reference to the example display screen shown in FIG.

First, the activation condition signals ILI of two successive automatic blocks of the sequential activation sequence divided into a plurality of blocks,
IL2 and running signals RUNI and RIIN2 are input via input means 1a. Next, display control means 2
a causes the display means 3 to display whether or not the starting condition is satisfied for each starting item of each automatic block using the preceding and succeeding starting condition signals ILL and IL2.

Here, if the activation condition is not satisfied, the display control means 2a
It is determined whether this starting condition is a condition related to the previous stage automatic block, and if it is predicted that the condition will be satisfied upon completion of the operation of the previous stage block, the automatic block execution signal R11Nl, RUN2 is sent. For example, in the case of continuous display, a flicker display is used to distinguish the display from other display that the condition is not satisfied.

FIG. 2 is an example of a display diagram of the display means 3. This is the fifth
As explained using the figures, automatic block names 11 for distinguishing each automatic block are displayed at the top of the screen, and sub-names 12 for explaining the contents are displayed below. Below this sub-name 12, an item number 13, a starting condition name 14, and a state 15 of whether the starting condition is satisfied or not satisfied are displayed for each starting item from left to right.

Here, if the activation conditions for both "machine 2 rise limit" and "machine 3 close limit" are not satisfied before automatic sequence 1 starts operating, both the conditions are displayed as not being satisfied.

However, when automatic sequence 1 starts, the activation condition of "machine 2 ascent limit" is a condition that is satisfied in the middle of the automatic sequence 1 execution step, so while automatic block 1 is being executed, the execution of the previous block is triggered by the running signals RUNI and RUN2. Inside, a flicker will be displayed to indicate that "machine 2 upper limit" is not met. As a result, when automatic sequence 1 starts executing, the operator can confirm that among the startup conditions for automatic sequence 2, "machine 2 ascent limit" does not hold, but the condition soon changes to "machine 3 close limit". It can be seen that a condition that does not hold is a condition that cannot be satisfied unless the operator takes action.

In the above embodiment, the failure of the condition is displayed in continuous display and flicker display, but the same effect can be obtained by displaying the continuous display and flicker display in different colors.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, there is a manual means for inputting a start condition signal and an execution signal for each automatic block, and a display means that indicates whether the start condition of the block is satisfied or not based on the start condition signal. At the same time, for activation conditions that are predicted to change from unfulfilled to established in the activation condition signal of the block due to the previous activation sequence, display control is performed to distinguish the activation conditions from the normal condition fulfillment display using the block execution signal. Since the automatic block is equipped with means, it is possible to provide early guidance on how to deal with the activation condition, even if it is not immediately before the start of the automatic block.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.
Fig. 2 is a diagram showing an example of a display screen of a display device in order to explain the operation of the same embodiment, Fig. 3 is a block diagram illustrating a plurality of sequential activation sequences divided into automatic blocks, and Fig. 4 (a) and (b) are flowcharts showing detailed processing operations of these automatic blocks, FIG. 5 is a block diagram showing the configuration of a conventional sequential start sequence monitoring device, and FIG. 6 is for explaining the operation of the same device. FIG. 2 is a diagram showing an example of a display screen of a display device. 1a... Input means, 2a... Display control means, 3...
-Display means, lOa... sequential activation sequence monitoring device.

Claims (1)

[Claims] In an apparatus that collects a plurality of sequential activation sequences to be operated automatically and continuously into a plurality of automatic blocks, and monitors by displaying on a display means whether the activation conditions of these automatic blocks are satisfied or not for each activation item, the automatic block an input means for inputting a starting condition signal and an execution signal for each block, and displaying on the display means whether the starting condition of the block is satisfied or not based on the starting condition signal, and the starting condition of the block is determined by the preceding starting sequence. and display control means for displaying a starting condition that is predicted to change from not being satisfied to being true, using the block execution signal to distinguish it from a normal condition meeting display. Device.