CN1581113A - Auxiliary storage device for automation controllers - Google Patents

Abstract

An auxiliary storage device of an automation controller, comprising: the connection unit is connected with the automation controller and used for transmitting and receiving specific data; a switching unit connected to the connection unit, the switching unit being configured to switch a direction of the specific data transmission; a storage unit, which further comprises at least one storage element and is connected with the switching unit, and is used for storing the specific data; and the load unit further comprises a plurality of load components, the load unit is connected with a working power supply, and the load unit is used for generating a load after receiving the working power supply. The data in the auxiliary storage device can be transmitted to a built-in storage unit in the automatic controller to update the internal instruction of the automatic controller, and the original data in the automatic controller can be backed up to the auxiliary storage device to effectively provide the storage expandability of the automatic controller.

Description

Auxiliary storage device for automation controllers

technical field

The invention relates to a storage device, which is applied to auxiliary automation equipment, in particular to an auxiliary storage device connected to an automation controller such as a programmable logic controller or a man-machine interface, enabling the automation controller to additionally store programs.

Background technique

With the advancement of science and technology, the traditional industrial era has gradually evolved into the automatic industrial era. In the process of automation, in order to make the factory production smooth and reduce manpower, many automated control components must be used. When it comes to automatic controllers , it is unavoidable to mention the programmable logic controller (PLC). The programmable logic controller (PLC) is a great tool for process control. Nowadays, most of the work of factory program automation is undertaken by it. The programmable logic controller (PLC) ) is a microcomputer specially designed for process control systems. The production factory downloads the required execution program into the built-in storage unit of the programmable logic controller (PLC) through a writer or editing software, and then the logic processing unit Follow the control logic defined in the execution program to monitor and process the input signals from buttons, sensors or limit switches, etc., and send the output signals to external loads after logical judgment, such as relays and indicator lights , Electric machinery, sometimes according to the needs of the production line, the output signal feedback can be used as an input signal to control other output devices.

From the above, it can be seen that the programmable logic controller (PLC) includes a logic processing unit and a built-in storage unit, wherein the built-in storage unit has an instruction program code recorded therein, and the logic processing unit can be programmed by the instruction program code in the built-in storage unit, Execute various actions to control the production equipment, but in today's rapidly changing technology, the factory's automatic production process is relatively subject to frequent corrections, but the instruction program codes of the programmable logic controller (PLC) are all programmed Built-in storage unit, so when the automatic production process needs to be changed, the manufacturer must use a writing device or editing software to directly change it, or send the entire programmable logic controller (PLC) back to the original factory for replacement The new version of the automatic production process instruction program code, such an approach will cause inconvenience to the manufacturer.

In addition, the man-machine interface in the automation controller is used as the communication interface between the automation controller and the user. Based on various situations, the man-machine interface is designed to display information, and at the same time receive the user information directly from the keyboard on the screen. input, which enables the HMI to be used in a variety of different applications, from machine tool control panels to factory monitoring applications. However, there are problems of data backup and update as with PLC. Therefore, if an auxiliary storage device can be provided for these two kinds of automation controllers, it will be more convenient in application.

Contents of the invention

In view of this, the present invention proposes a more convenient auxiliary storage device, which can provide another set of external auxiliary storage devices to make the application more convenient.

In order to achieve the above object, the present invention provides an auxiliary storage device for an automation controller, the auxiliary storage device includes: a connection unit connected to the automation controller, the connection unit is used to transmit and receive a specific Data; a switching unit, the switching unit is connected to the connection unit, and the switching unit is used to switch the direction of the specific data transmission; a storage unit, the storage unit further includes at least one storage element and is connected to the switching unit, the storage The unit is used to store the specific data; and a load unit, the load unit further includes a plurality of load components, the load unit is connected to a working power supply, and the load unit is used to generate a load after receiving the working power supply.

The auxiliary storage device of the automation controller as described above, wherein the storage unit further includes:

A power supply pin, the power supply pin is connected to the working power supply, and the power supply pin is used to receive the working power supply to provide the working function of the storage unit; a grounding pin, the grounding pin is connected to a ground terminal of the connection unit , to form a ground loop; a pulse pin, the pulse pin is connected to a pulse terminal of the connection unit, and the pulse pin is used to receive a system clock pulse of the automatic controller; and a data pin, the data pin It is connected with a data terminal of the connection unit, and the data pin is used for receiving and transmitting the specific data to the automation controller.

As for the auxiliary storage device of the automation controller mentioned above, when the switching unit is in the closed state, the auxiliary storage device transmits the specific data in the storage unit to the automation controller.

As for the auxiliary storage device of the automation controller mentioned above, when the switch unit is turned on, the auxiliary storage device receives the specific data of the automation controller and stores the specific data in the storage unit.

In the auxiliary storage device of the automatic controller mentioned above, the connection unit is an RS232 connection interface.

The above-mentioned auxiliary storage device for the automation controller, wherein the load unit further includes:

a first load component, the first load component is a resistance component, and the first load component is used to generate a load between the operating voltage and the switching unit;

a second load component, the second load component is a resistance component, and the second load component is used to generate a load between the operating voltage and the pulse pin; and

A third load component, the third load component is a resistance component, and the third load component is used to generate a load between the working voltage and the data pin.

The application of the auxiliary storage device disclosed in the present invention is more convenient, wherein the automation controller can be connected to the auxiliary storage device through the connection interface, and the automation controller is provided with a logic processing unit and a built-in storage unit, and can be used after the connection between the two is completed. According to the needs of the user, the data in the auxiliary storage device is sent to the built-in storage unit in the automation controller to update the internal instructions of the automation controller. The original data is backed up to the auxiliary storage device to effectively provide the storage expansion of the automation controller.

Description of drawings

Fig. 1 is the schematic block diagram of the auxiliary storage device of automation controller of the present invention;

2A is a detailed schematic diagram 1 of the auxiliary storage device of the automation controller of the present invention;

2B is a detailed schematic diagram II of the auxiliary storage device of the automation controller of the present invention; and

Fig. 3 is a flowchart of the operation of the auxiliary storage device of the automation controller of the present invention.

Wherein, the reference signs are explained as follows:

10 Automation controller

11 Interface unit

12 Logical processing unit

13 Built-in storage unit

20 Auxiliary storage device

21 Connection unit

22 Switching unit

231 The first load component

232 Second load assembly

233 The third load component

24a, 24b storage unit

VCC Power Terminal

GND Ground Terminal

SCL Pulse side

SDA Data Terminal

SW Switching terminal

AI Connection Terminal

300 Connect secondary storage device to automation controller

310 The user selects the working mode of the auxiliary storage device

320 Selected by the user to update the working mode

330 A backup working mode is selected by the user

340 The program in the auxiliary storage device is sent to the programmable logic controller for update

350 Transfer the program inside the automation controller to the auxiliary storage device for backup

Detailed ways

The present invention is an auxiliary storage device for an automation controller. Please refer to FIG. 1 , which is a schematic block diagram of an auxiliary storage device for an automation controller of the present invention, wherein the automation controller 10 includes:

The interface unit 11, the logical processing unit 12 and the built-in storage unit 13, the built-in storage unit 13 stores specific data, this specific data is the executive program that the production factory will need, and the logical processing unit 12 follows the storage unit 13 specific data to control the connected factory equipment, the interface unit 11 is used to connect the auxiliary storage device 20, so that the specific data in the automation controller 10 can be updated by the auxiliary storage device 20, or the automation controller 10 Specific data within is backed up in the auxiliary storage device 20 .

Next, the interior of the auxiliary storage device will be described in detail. Please refer to FIG. 2A , which is a detailed schematic diagram of the auxiliary storage device of the automation controller of the present invention.

The auxiliary storage device 20 of the present invention includes: a connection unit 21, a switching unit 22, a storage unit 24 and a load unit, wherein the connection unit can be an RS232 connection interface, on which a power supply terminal VCC, a ground terminal GND, a pulse terminal SCL, data terminal SDA and switching terminal SW, and the storage unit 24 includes power supply pins, ground pins, pulse pins and data pins, wherein the power supply pins are connected to the power supply terminal VCC for receiving the automatic controller The working power supply, the ground pin is connected to the ground terminal GND, which can form a common ground loop with the automation controller, and the pulse pin is connected to the pulse terminal SCL to receive the simulation system clock pulse transmitted by the automation controller, and the data pin It is connected with the data terminal SDA for transferring specific data.

The switching unit 22 is connected to the switching terminal SW, and is used for providing the user to select the transmission direction of specific data (for example: from the automation controller to the auxiliary storage device, or from the auxiliary storage device to the automation controller). The load unit is connected to the working power supply, and further includes a first load component, a second load component and a third load component. These three load components can be connected to resistor components. The first load component is set between the working voltage and the switching unit 22. and generate a load, the second load component is set between the working voltage and the pulse pin to generate a load, and at the same time make the pulse pin present a high potential (Pull High) state, and the third load component is set between the working voltage and the pulse pin Between the data pins, a load is generated to make the data pins present a high potential (Pull High) state.

In addition to the above-mentioned auxiliary storage device, the present invention is designed to store more specific data, and another auxiliary storage device is designed. Please refer to FIG. 2B , which is a detailed schematic diagram 2 of the auxiliary storage device of the automation controller of the present invention.

Wherein the connecting unit 21, the switching unit 22 and the load unit are connected in the same way, but behind the storage unit 24a, there is another storage unit 24b connected in series, and the storage units 24a-b are further provided with a connection terminal AI to represent the storage unit The connection relationship between the front and rear of the storage unit 24a, where the connection terminal AI of the storage unit 24a is connected to the ground terminal GND (or empty connection), and its status is displayed as 0, while the connection terminal AI of the storage unit 24b is connected to the power supply terminal VCC, and its status is displayed as If it is 1, the pulse pin of the storage unit 24a is connected in series with the pulse pin of the storage unit 24b, and the data pin of the storage unit 24a is connected in series with the data pin of the storage unit 24b. In this way, the effect of increasing the storage function can be achieved.

Finally, a detailed description is given on the update action or backup steps of the specific data of the present invention. Please refer to FIG. The auxiliary storage device is connected with the automation controller (step 300), and then the user selects the working mode of the auxiliary storage device (step 310). In this step, the user toggles the switching unit, and the user selects an update working mode ( Step 320), then the switching unit is opened, the working power supply passes through the first load component 231, and the load voltage is transmitted to the automation controller 10 through the switching terminal SW (received level is 1), ready to receive specific data in the storage unit 24 , and then the program in the auxiliary storage device is sent to the logic controller for update (flow process 340), so that the step of updating data is completed, if the user selects a backup mode of operation (flow process 330), then the switching unit is short-circuited, at this time The working power supply passes through the first load component 231, and the load voltage is introduced into the ground terminal through the switching unit, and the level received by the automation controller 10 is 0, so that the program inside the automation controller is sent to the auxiliary storage device for backup (process 350 ).

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention; all equivalent changes and modifications made according to the contents of the description and drawings of the present invention are covered by the patent scope of the present invention .

Claims (6)

1. the auxilary unit of an automation controller is characterized in that, this auxilary unit includes:

One linkage unit, this linkage unit is connected with this automation controller, and this linkage unit is in order to transmit and to receive a particular data;

One switches the unit, and this switch unit is connected with this linkage unit, and this switch unit is in order to switch the direction that this particular data transmits;

One storage element, this storage element more comprise at least one memory element and are connected with this switch unit, and this storage element is in order to store this particular data; And

One load unit, this load unit more includes a plurality of load components, and this load unit and a working power are joined, and this load unit produces load after receiving this working power.

2. the auxilary unit of automation controller as claimed in claim 1 is characterized in that, this storage element more includes:

One power pin, this power pin is connected with this working power, and this power pin provides this storage element work to use in order to receive this working power;

One ground connection pin, this ground connection pin is connected with this linkage unit one earth terminal, to form ground loop;

One pulse pin, this pulse pin is connected with this linkage unit one pulse ends, and this pulse pin is in order to receive a system clock pulse of this automation controller; And

One data pin, this data pin is connected with this linkage unit one data terminal, and this data pin is in order to receive and to transmit this particular data to this automation controller.

3. the auxilary unit of automation controller as claimed in claim 1 is characterized in that, when this switch unit was closed condition, this auxilary unit then was sent to this particular data in this storage element in this automation controller.

4. the auxilary unit of automation controller as claimed in claim 1, it is characterized in that, when this switch unit was opening, this auxilary unit then received this particular data of this automation controller, and this particular data is stored in this storage element.

5. the auxilary unit of automation controller as claimed in claim 1 is characterized in that, this linkage unit is a RS232 connecting interface.

6. the auxilary unit of automation controller as claimed in claim 1 is characterized in that, this load unit more includes:

One first load component, this first load component is a resistor assembly, this first load component is used to produce between this operating voltage and this switch unit load;

One second load component, this second load component is a resistor assembly, this second load component is used to produce between this operating voltage and this pulse pin load; And

One the 3rd load component, the 3rd load component is a resistor assembly, the 3rd load component is used to produce between this operating voltage and this data pin load.

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