JPS5953905A - Operating position display device of each controlled system in sequence control system - Google Patents

Abstract

PURPOSE:To grasp easily a state of each controlled system, and to execute easily a maintenance control thereby, by dividing and arraying lamps for displaying an original position and an anti-original position, and arraying them in a position relation corresponding to each controlled system. CONSTITUTION:(n) Pieces of original position display lamps HLk-HLn corresponding to (n) pieces of limit switches HLS1-HLSn for detecting an original position are fitted to three pieces of output cards C1. These limit switches and lamps are connected electrically. The fitting order to the cards C1 is made equal to the operation order of cylinders S1-Sn, the lamps are fitted successively toward the lower side from the upper side of the left card C1, subsequently to the center card C1, and in the end, to the right card C1 in order. Also, anti- original position display lamps RL1-RLn corresponding to (n) pieces of limit switches RLS1-RLSn for outputting an anti-original position are fitted to three pieces of anti-original position output cards C2, and its fitting order is made all the same as that of the card C1, and coloring being different from that of the card C1 is performed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an indicator for displaying the operating status of each controlled object in a sequence control system.

Conventionally, in production, for example, a cylinder for upward movement to move a workpiece downward, a machining machine! Various controlled objects, such as a stationary cylinder to avoid moving the workpiece downward, and a compression cylinder to raise the workpiece, are operated in a predetermined 4t movement order from the original position (original position). After moving to the operating position (ashtray position) according to the instructions, it returns to its original position.I! In the "sequence control system for ending the operation of the Ci 1 cycle", an indicator is set up to let you know in which position (original position 51.l; 1. ashtray position) the object to be controlled is currently located. () is being done.

This indicator has a lamp on the display panel that indicates that the controlled object is in its original position, and a lamp that indicates that the controlled object is in the ashtray (17fQ). It was set up for each thing.

However, a set of lamps corresponding to each controlled object are arranged at adjacent positions, and a set of lamps corresponding to the next controlled object is arranged next to the set of lamps. It had become. Therefore, the lamps on the display panel 1 flicker in a jumbled manner, making it difficult to see and grasp the flow of movement of each object. Also, when a production line stops due to a failure of a controlled object, children generally have to figure out the cause of the failure by determining which controlled object is in its original position and which controlled object is in the ashtray position. However, since the lamps of each phase are adjacent to each other and flashing in a jumbled manner, it is difficult to immediately determine which controlled object is in its original position or in the ashtray position (Identification of a failed controlled object82). It was difficult to get back on track.

This invention was made in order to eliminate the above-mentioned "zero point", and the purpose of C1 is to accurately grasp the state of each controlled object without having to worry about the state of each controlled object. Now, the purpose is to provide a movement 1'F position indicator for each controlled object in a sequence control system that can easily maintain and manage each controlled object on the production line.

An embodiment embodying the present invention will be described below with reference to the drawings.

In FIG. 1, 81 to S11 are cylinders as 11 controlled objects installed in a production line that operates to add weight to an object, and the piston rod L is controlled by a sequence control circuit. :'F) I・~p n is shown as a solid line! 1!2, the ashtray is moved to the position of the ashtray indicated by the two-dot chain line in a predetermined order (from cylinder $1 to cylinder 3n in this example) in a predetermined order starting from rloka. Controlled by J
: Sea urchins are turning. 1-ILsi...-LI LS n
There is a limit switch f-C as a home position detector that detects whether the piston rods Pi-Pn are in the home position,
When 1.~pn is in the original position, each L]rad 1-pH
It is located at a position where it is turned on by engaging with the dog provided in the camera]. RLSI~RLSI+ is a switch to limit 1 which serves as an ashtray position detector to detect whether or not the screw 1-in rod P1-1) 11 is in the ashtray position. When each rod P1-pn is in the ashtray position, the dog D provided on each rod P1-pn is engaged with and turned on.

In Figure 2, 01 is placed on the frame of the display (=J'
C, jlζ 3 original position output cards, and 11 limit switches HLS that detect and override the original 1) °l buy.
1"□ l-I L S n corresponding to n original position display lamps 111 . . . Soshinira et al. 11
Original position indicator lamp 1-ILl・HE-1-11-11
are electrically connected to the lit switches f1-11-81 to H1-Sn for detecting the original positions, respectively, as shown in FIG.

Furthermore, the order of these lamps 1-(L1 to I-111) with respect to the original position output card C1 of 3157 is made equal to the operation order of the cylinders 81 to 3n, and this embodiment C
Attach the left output card C1 sequentially from the top to the 1 side, then remove the center output card C1 (and finally the right output card C1). .

C2 is a three ashtray position output card taken on the right side of the original position output card C1, and outputs the ashtray position. 8n limit switches RLS 1 to R
Ashtray position indicator lamps RLI to RL corresponding to L S n
11 is taken to the three ashtray position output cards C2.''
is being pulled. The limit switch R1-8 detects the ashtray position as shown in Fig. 4.
+~RL S 11 is electrically connected.

Also, the order in which these display lamps RL1 to R1) are attached to the three output cards C2 is determined according to the operating order of the cylinders S1 to J3, similar to the original position display lamps. As a result, the original position display lamp and ashtray position display lamp corresponding to each control object are arranged in a positional relationship that corresponds to each other in each group (output card). . For example, if we pay attention to cylinder S2 as a controlled object, its original position indicator lamp 1112 is placed second from the original position output force -1・C1 on the left side, and its ashtray is also located on the left side. Position indicator lamp R
1-2 is placed second from the soil on the left ashtray position output card C2.

(13, The second side of the three original position output cards C1 is colored green, for example, and the second side of the three original position output cards C1 is colored green, and
2. It is designed so that it can be easily identified.

Kono J, Uni in this example 1, 11 each cylinder S1 ~ S
In-place large water lamp 1 (S1-1) that displays the original position of 11
-I Ln Displays the ashtray position (Indicator RI-1-RLn shown in Figure 2) It is possible to clearly see which ones (of each cylinder 31. to SII) are located in the 0 original position (, 2 or 1), or (1) which is not the opposite. Position display lamp 1111~l-
I Lll ashtray position indicator lamp R11~,・l'?
1. II, each f + I' with − for each controlled object
Since they are arranged at positions corresponding to the middle r to 7 of 311, they can be immediately compared for correspondence. This (,1,
In recent years, control statements and phenomena have become large-scale (in the direction of In), and the number of objects to be controlled (jl) has increased accordingly. 51.This means that it is self-effecting and follows. Therefore, according to the sequence control, there is a link to the platform on which these cylinders $1 to 3n are controlled. When the production line stopped due to a malfunction, it was naturally placed in the original (O position) or vice versa (in the ashtray position ()).
] Each indicator lamp 1-I indicates which cylinder is required.
L1~)-11-n, RL1~Rl-n is now very easy to search for, and what is more, what seems to be an abnormality that was discovered recently (J, and furthermore, Since the original position of the lamp can be observed immediately in correspondence with the lamp in the ashtray position, it is possible to quickly determine whether or not it is truly abnormal, which speeds up maintenance work. can be measured.

In addition, when each cylinder S1 to 3n starts operation according to a predetermined sequence, all cylinders 81 to 3n must be in their original positions at the time of start. 1 to 3 hours cylinder 81-1 to 3 L
11 is in the original position or not. 1. It is possible to immediately observe whether the lamp is in the original position or not, by immediately matching it with the lamp in the ashtray position. Identification can be performed reliably.

In addition, the operation time of cylinders 81 to 3n is determined based on the operating time of the cylinders 81 to 3n (which display lamp and corresponding ashtray position display lamp are lit).
It is possible to easily and accurately know the time lag between t1 and 39 times.

A3 This embodiment C is for the convenience of explanation. The objects to be controlled are 8 cylinders...S11, and these cylinders S1...S1
Displays the original position of 1 and the ashtray position 3":), but
This is the other controlled object in A, for example the cylinders 81 to 3n.
It may also be implemented by displaying the status of the relay A, A or the electromagnetic valve Δn, 71 for driving the relay. Tsugahara ()'L direct display lamp 1-IL
I・~H1,-IT ashtray position indicator lamp RI-1~R
Separate the lighting display color with l and n and execute b
J, yes.

In addition, the input state thI is indicated in the input state card of the programmer tool 1-1 Herola, which has been used frequently recently. The input address of the detector may also be determined.

Furthermore, in the above embodiment, three original 4;11 output cards 01 and three reflection position output cards C2 were each arranged in a fixed manner, but the number could be further increased (1). , also corresponds to the original position of one sheet and the ashtray position output cup J-C
i, do one phase of C2, arrange those numbers l111 in succession, or place two or more pieces in the original position and? 1'hara 1
It is also possible to carry out the implementation by making one set each of the η position output cards C1 and C2 and arranging them alternately in parallel.

In this invention, as described in detail above, the lamp group for displaying the original position and the lamp group for displaying the ashtray position are arranged separately, and each of the lamps is controlled separately. By arranging each target object in a positional relationship that corresponds to each other in each group, it is possible to grasp at a glance the current state of each control target object, which improves production. In order to facilitate inspection and maintenance of each controlled object on the line, it is important in industry to use an operating position indicator for each controlled object in the sequence control circuit.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram showing the relationship between each shilling embodying this invention, the original position, and the limit 1 to suit f for detecting the ashtray decoy. Figure 2 is an explanatory diagram showing the relationship between the original position indicator lamp and the waste bottle. The arrangement of the position indicator lamp tl'Z'Vj is shown in FIG. 1, and FIGS. 3 and 4 are electrical circuit diagrams. Schilling-81 to 3n as a controlled object, limit switch FHL S as a detector to detect the f1 position
1-~l-1'L, Sn, Detector for detecting ashtray position 1i Mitswitch RL S l-RL
S n, original position indicator lamp Ht-1 to I-11-n,
Waste bottle position indicator lamp 1) L1 to 1.

Claims (1)

[Claims] 1. A plurality of controlled objects are operated from a predetermined original position to an ashtray position according to a predetermined operation sequence. 1. =
iQ, a sequence control system that performs one cycle of operation each time it returns to the original position, includes an original position detector that detects the original position of the controlled object, and an original position detector that detects the ashtray position of the controlled object. An ashtray position detector or the like is provided corresponding to each object to be controlled, and a home position indicator lamp or the like that lights up based on the detection of the home position detector lights up depending on the detection of the ashtray position detector. The ashtray position indicator lamps are set up (), and these original position indicator lamps and ashtray position indicator lamps are separately arranged on the display (as shown in Figure 1). The corresponding original position indicator lamps and ashtrays are arranged in a positional relationship that corresponds to each other, and the movement of each controlled object is Jo: (Ri:.