JPS61296147A - Offline preferential control in central control unit of loom - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for centrally controlling a large number of looms.
More specifically, the present invention relates to an offline priority control method in a central control device for a loom, which has an online/offline selector switch on each loom side and is configured to operate the loom preferentially, independently of the host CPU, when offline.

In prior art textile factories, groups of several tens to hundreds of looms are centrally controlled by a central host CPU. In such a central control device for a loom, if the central host CPU fails, a serious situation will occur in which the entire factory will stop. In order to avoid such a serious situation, each loom should be provided with an offline switch that can be disconnected from the host CPU on a preferential basis, so that if the host CPU fails, it will be taken offline and each loom will be operated by a dedicated control device. All you have to do is continue.

Problems to be Solved by the Invention However, when an offline switch is provided on the loom side, there is a problem that incorrect control may be performed due to a misunderstanding between the host CPU side and the operator operation on the loom side, resulting in the weaving of defective products. There is. For example, even though the next data is not prepared on the host CPU side when online,
There is a risk that the loom will request the next data and start operating, determining that the data has been changed even though the data settings have not been changed. On the other hand, on the host CPU side, even if new data is set, the loom side is offline, and there is a risk that the loom side will continue to operate without any settings being changed.

The present invention was made by focusing on such problems in the conventional technology, and its purpose is to provide an online/offline switch on the loom side, and to eliminate misunderstandings between the host CPU side and the site side. It is an object of the present invention to provide an offline priority control method in a central control device for a loom that does not perform erroneous control due to such reasons.

Means for Solving the Problems The present invention achieves the above object when, when the loom is online, the loom side requests data from the host CPU, but the data to be sent to the host CPU side is not prepared. In this case, the host CPU issues an alarm and issues a command to the loom to operate the loom offline, and the loom outputs an operation prohibition signal to prohibit operation of the loom and switch to offline. I am trying to output a warning. Additionally, in the present invention, if data is sent from the host CPU while the loom is offline, an alarm is issued to tell the loom to switch to online, and the status is sent back to the host CPU, and an alarm is output on the host CPU side as well. I try to do that. In this case as well, the operation of the loom may be prohibited, but if the host CPU fails, there is a risk that the loom will not be able to operate independently even if it is switched offline, so it is recommended to prohibit operation on the 1st floor. requires further attention.

By performing such an operation, it is possible to eliminate problems caused by misunderstanding between the host CPU side and the on-site loom side, which tends to occur when an online/offline changeover switch is provided on each loom side.

Configuration of Centralized Control Device First, FIG. 1 is a block diagram of the configuration of a centralized control device that is the premise of the offline priority method of the present invention. This central control device includes a central control device 1 as a host CPU, and a plurality of looms 71 .
7. ...7. control bag? &2. ．． 2□...211. The central control bag W1 has a CPU 11 inside, and is connected to an input device 13 such as a keyboard and an output device 14 such as a CRT or printer via an input/output port 12, as well as an external memory 15. and interface 16 are connected.

The control devices 21.2□ . . . 27 control each loom 71 .
7t...7. 1, and on the other hand terminals 3+ 13z...3fi% interface 41
．． 4□...Connected to data bus 5 via 411,
Furthermore, this data bus 5 is connected to the CPU II via an interface 16.

The central control unit 1 controls each loom 7 according to a control program under the control, calculation and storage functions of the CPUI 1.
I, 7. . . 7, the control device 21.2□ . . . transfers necessary control data through the data bus 5 based on a request from 27.

Such control data is inputted by an operator through the input device 13, created while checking with the output device 14, and after creation is stored in the memory 15 together with a product number specific to the textile product. In other words, for each textile type, data on the number of rotations of the loom per unit time, the number of weft threads per unit length, the warp thread tension during weaving, the on/off timing of the weft insertion nozzle, and other necessary weaving conditions are available in advance. It is created and stored inside the memory 15.

The contents of the control data set in this way are as follows:
Changes are made as necessary, and changes are made each time actual weaving or trial weaving is performed to achieve optimal conditions.

Each control device 21, 22...2n controls the corresponding loom 7I, 7□...7. based on the control data from the central control device 1 transferred through the data bus 5. .

control. This control word 72. ．． 2□ ・On the 2ゎ side, there is an online/offline selector switch 68.6□ ・
- 6.1 are respectively provided, and when switched offline, each control device 28.2□ ... 27 is independent from the central control device 1 and controls each loom 7.2□ that it is in charge of.
,? ,...7. , is configured so that it can operate preferentially.

Method of the Invention FIG. 2 is a flowchart showing the main routine of the central controller I in the offline priority method of the invention. This main routine is executed by a central control program inside the CPU 11.

First, the CPU 1 receives a command to start the main routine, starts this routine, selects the first machine, and inputs the machine number, for example, the machine number rlJ, to the terminal 31.
, and also sends a status request (steps 1 to 3). As a result, from the control device 2I side of the loom 7I to the terminal device 3. via C
Receive the status sent to PUI l (step 4). Here, the CPU II determines from the received status that the control device 2. of the loom 7I. It is determined whether there is a request for data (step 5). Here, the control device 2. is requesting data, the CPU II searches the memory 15 for the requested registration data (step 6.7). If data exists, the necessary control data is read out and transferred to the corresponding terminal device 31 via the interface 16, data bus 5 and interface 41 (step 8). The terminal device 31 stores the transferred control data, transfers the data necessary for the operation of the control device 2I of the corresponding loom at any time, and performs the necessary control of the corresponding loom 71 based on the data. .

On the other hand, if there is no registered data as a result of the registered data search, that is, if the data to be transmitted is not prepared, the offline command signal is sent to the corresponding control device 2I.
and output an alarm (step 9.1
0). At this time, the operation of the loom 7I on the control bag W21 side is prohibited.

In the method of the present invention, if such data to be transmitted to the central control device l side is not prepared, the central control device 1 transmits the corresponding looms on the looms 71.7□...7fi side. One of the features is that a command signal is transferred so as to operate offline and a warning is issued, in other words, steps 9 and 10 are provided in the flowchart.

Next, the CPU 1 determines whether the data setting flag is set (step 11), and if it is set, performs a setting data transmission process (step 12).
), then select the next machine (step 13),
Return to step 2.

If the data is requested from the loom 78.7□...711 in step 11, that is, if the answer is NO'' in step 5, the answer is NO'' and step 12 is skipped.

FIG. 3 is a flowchart showing the console interrupt subroutine in this case.

In FIG. 3, the flow indicated by arrow A is the flow when control data is input as a queue. Further, the flow indicated by arrow B is the flow when the operator partially changes the control data while the loom is in operation.

After going through the flow of arrow B, the data setting flag is set, and in the main routine shown in FIG.
1 is "YES", and the setting data transmission process of step 12 is performed.

FIG. 4 is a flowchart showing details of this setting data transmission process. If the loom side has been switched offline, the data sent by the central controller cannot be set, and the determination in step 12 is "YES", and the settings are made according to the flow of arrow B in Figure 3. Data is,
It is not sent to the loom, it is invalidated, and a warning is output (step 126).
).

Next, Figure 5 shows each control device 21.2□...21
1 is a flowchart of the main routine performed by the 6th
The figure is a flowchart of the reception interrupt subroutine.

Control device 2I, 2°...2. , are configured to include a microprocessor, and as shown in FIG. 5, the corresponding looms 71.7□ . . . 7. The system repeatedly executes the flow of capturing the status (operation data and control result data), determining whether a data request is necessary, and setting a data request flag if a data request is necessary. While this main routine is being executed, if the loom number of the own machine is specified in the reception interrupt subroutine as shown in Fig. 6, in other words, if the state is "YES" in step 1, then a status request is issued. Decide (Step 2)
). If it is a status request, it is determined in step 7 whether the data request flag is set in the main routine of FIG.
, via the data bus 5 and the interface 16 to the CPtJll in the central control unit 1 (step 4).
, Subsequently, data sent from the CPUI 1 side, that is, step 8 in the main routine of FIG.
Alternatively, the data transmitted in step 9 is received (step 5). Next, it is determined whether the received data is an offline command (step 6). If the received data is an offline command, operation of the loom is prohibited and a warning is output (step 7.8). In step 6, if the received data is not an offline command, data setting is performed (step 9).

The contents of this subroutine of step 9 are the same as steps 12.13.14.15.16 in the same figure.

In step 2, if it is not a status request, the process branches to step 11 and configuration data is received. Next, check whether the online/offline switch is offline.
In other words, it is determined whether the loom is offline (step 12). Here, weave 87. , 7□ . . . 7□ is off-line, setting is disabled, and a setting-disabled signal indicating this is sent to the CPU I side, and a warning is output to switch to online (steps 13 and 14). The unconfigurable signal sent to the CPUII is
In CPUI 1, step 124 in FIG.
The alarm is also output on the central control device 1 side in steps 124 and 125.

In step 12 of FIG. 6, the loom 70.7□...7.
When l is not offline, that is, when it is online, data setting is performed (step 15), and after the data setting is completed, a completion signal indicating this is transmitted to the central controller 1 side (step 16).

In the present invention, such looms 78, 72...7n
If data is transmitted from the central control unit 1 side when the looms 71.7□...7 are offline, an alarm is issued to the looms 71. Another feature is that an alarm is also output on the central control device 1 side by sending the signal back to the central control device 1 side.

In the above embodiment, information indicating online/offline is included in the status information on the central control unit 1 side, and data transfer is performed by determining the status of the terminal devices 38, 3t, . . . 37. You can decide whether to do it or not and output a warning, but if the amount of data to be transferred increases,
This takes a long time, and during that time, Ori i7.
．． 7°...There is a problem that the online/offline selector switch on the 7fi side is switched. Therefore, as in the present invention, after receiving data from the central control device 1, the terminals 3I, 3□, . It is said that

As described in detail, according to the present invention, an online/offline selector switch is provided on the loom side, so that the loom can operate preferentially independently of the central control device when offline. Erroneous control due to misunderstandings between the equipment side and each loom at the site can be prevented.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of the configuration of a central control device for a loom to which the method of the present invention is applied, FIG. 2 is a flowchart showing an example of the operation of the central control device in the method of the present invention, and FIG. 3 is a console interrupt subroutine. FIG. 4 is a flowchart showing details of the setting data transmission process, FIG. 5 is a flowchart of the operation performed by the loom control device, and FIG. 6 is a flowchart showing the reception interrupt subroutine. 1...Central control unit, 2I, 2□...2. ...Loom control device, 38.3□...・Terminal, 40.4
□...4Il, 16...Interface 5...Data bus, 6+, 6□...6. l...Online/
Offline selector switch, 74.7□ ・・7n ・・
Loom, 11... CPU, 12... Input/output port, 13...
- Input device, 14... Output device, 15... External memory. Fig. 2 Main route (-Sword machine IT data request transmission status 11-4 ■ Ambiguous-&) 1N. Japanese Unexamined Patent Application Sho G1-296147 (6) Figure 3 Figure 4

Claims (1)

[Claims] In a centralized control device for a loom, which has an online/offline selector switch on each loom side and is configured so that the loom can preferentially operate independently of the central control device when offline, when the loom is online and the When a data request is made to the control device, if the data to be sent to the central control device is not prepared, the central control device outputs a warning to that effect and causes the loom to operate the corresponding loom offline. The command signal is transmitted, and the loom side receives the command signal and prohibits the operation of the loom.
If the loom is offline and data is sent from the central control device, the loom outputs a warning to switch to online and also sends a signal indicating that data cannot be set. 1. An offline priority control method in a central control device for a loom, characterized in that the information is sent back to the central control device side, and an alarm is also output on the central control device side.