1. Introduction

The frequency of use of the bending machine is very high, and the precision of bending machine is very strict. to ensure the accuracy and work efficiency, and meet the operation process and the door workers that could change at any time.

Wecon PLC + HMI+ stepper motor to solve their single function of auxiliary equipment problems, the program design in the third axis of the screw to do the automatic compensation calculation function, in the Each step there is a compensation window to facilitate the special slope of the bending work, which has been recognized by customers.

2.Technology

Control forward and backward motor to run simultaneously to ensure consistent walking distance.

Up to 12 operations can be set to less than 12, it goes to the first step standby after the last process is complete automatically.

Forward and back the motor to run according to the set distance, each step two machines have compensation window (for the slope of the process), each step should have a waiting time, there must be back distance, can jump to any step.

Horizontal travel motor has a compensation function with the compensation for screw installed in the tilt error generated when the motor and the motor 2 from the knife-edge distance.

For each process to be able to save the recipe, recipe name can be customized.

3. Solution

HMI: Levi 700LK

PLC: LX3V-1616MT

4. Program

HMI program

1. Data setting screen, to set any data
2. Receipt：to save the receipt files, you can decide the group name

3.Parameter setting 1: It can run motor 1 and motor 2 respectively, and fine-tune the movement and fixed-length operation.

4.Parameter setting 2: The compensation setting of motor 3, first run manually and measure the corresponding parameter. The manual return point can input the length of motor 3, the motor 3 will automatically start motor 1 and motor 2 for error Compensation movement.

5. Run Screen: The current step is black, after the current execution is complete, you can choose any other steps to go, the current is not complete, click not available.

PLC Program:

1. Motor 3 compensation operation, the use of the geometric ratio calculation

2.Automatic operation: the application of the index register, so that the program is more simplified, the program debugging, back, delay, compensation is added later, if you do not use the index register, then the program is very difficult to write tasks huge

3. To prevent the motor 1 and the machine 2 from being out of synchronization, the following processing is performed

5. Conclusion

1. The preparation of the program at the beginning lay a good foundation, even in the previous request on the basis of the new expansion requirements, you can quickly make the deal, improve the programming efficiency.

2. Multi-analysis process, I want to use “data set” screen plus the indicator light as the operation screen, but not easy to operate, and later because of the operation requirements, add a “run screen”, making the screen intuitive and that is easier to operate.

3. Set the origin of the motor, compensation, manual operation and other aspects of the design to be simple and clear, such as the starting point of the program to find the need to set a number of distance, after several studies only need to set a distance can, redundant Of the operation in the PLC to do, so easy to operate.

6. Equipment Pics.

1. Introduction

Matrial cutting is used in various industries, and each industry with its own feature. Then main difference is the way feeding and fix due to different characteristic of material. But the working principle is almost the same. Now this system of rubber cutting machine is cutting one cylindrical shape rubber.

2. Application requirement

The key point of this cutting system is how to feed and handle the tailing. Because the length of raw material is not unified, but the cutting length is unified, so the difficulty is how to cut whole length, and fix the position and length of feed warehouse and knife

3. Solution

Wecon HMI levi 700EL ,  PLC LX3V-1208MT-A2, servo WKSQ-750KW

Wecon HMI work with PLC, wecon HMI under operation mode, with control and debug function. And PLC control servo precisely to feed and fix a position.

4. Program and displaypage introduction

Display page, showing qty and speed of rubber material, setup operation mode, the required length and qty

parameter set up

5. Senor will recognise if the material cutting is finished, if yes, it will clip the end of rubber

6. It will recognise the end of rubber due to length and position of material,  then decide go to cycle procedure or alarm for end hanling.

7. Summary

The main issue is tailing hanle,  and better recognize the length of tailing at different work status

1.General 

WECON LEVI Series HMI uses the COM2 port to print (All types of WECON LEVI Series HMI support it).

Note:
When COM2 is used to print, cannot be used for communication.

2.The printer connection
The HMI COM2 port —-232 connection
T—-R
R—-T
G—-G

For example
1)WH-E20
WH printer—–WECON HMI
3———————-2 (RS)
5———————-3 (TS)
9———————-5 (GND)

2)SIUPO connection
SIUPOI HMI–COM2
2——————2
3——————3
5——————5

3.Project settings
Use com2 port to print, so we must open the print function in the project configuration. The following is setting.

Note:
comX serial port parameters should be the same as the printer.

4.Screen editor

The printer object is in [Parts Library] -> [Picture]
Double click object to pop-up the setting screen as Figure shows.

1)Position: It is used for setting the position of the object, which is the coordinate of the upper-left corner;
2)Size: It is used for setting the size of object;
3)Edit: It is used for setting trigger addresses for operations.
Export to printer: Set the trigger address for printing;
Export to file: Set the trigger address for exporting picture;
4)Export folder: It is used for setting picture saving path, the format like,
Udisk :\Udisk\
Flash:\Flash\
SD: \CFDC\
C Disk: C:\
5)Print direction: It is used for selecting the direction of printing;

5.Printer list
So far WECON Company only tested the following model.
W-H printer：E202Z100-S0E0032 T55-577；E361Z100-00E0022T55；E20；A5；E17；（16 dot matrix）
Siupo printer：EF 32SK；E8 L16SK；(http://www.siupo.com/english/)

1. Introduction.

The production line in the application is making the cold-rolled, hot-rolled steel coil, stainless steel coil and other open-book school-cut into a variety of fixed-length sheet, with a high degree of automation, school-quality, accurate cutting accuracy, high production efficiency, Stable and reliable performance, easy operation and maintenance features. However, in its basis to increase the printing function, you can print a fixed length of the position of different product specifications of the trademark.

2. Process requirements

In this part we emphasis on WECON PLC in the printing machine applications: Equipment requirements In the process of feeding the production line, according to the spindle speed changes, the slave can automatically follow the speed changes, and to ensure that the feeding distance from printing color, printing Color when the master / slave axis speed the same. So as to ensure the effect of printed patterns.

3. Solutions

This control system used WECON products:  LX3VE-1212MR PLC and LEVI-700LK HMI.

Brief introduction as follows: The main function is the E-CAM of LX3VE PLC, first of all, the electronic cam initialization settings, according to the rules of operation to determine the cyclical operation. Secondly, the spindle encoder high-speed counter C251 and the multiplier are used to calculate the data (the number of pulses per unit period of the master or slave axis, the synchronization rate, and the synchronization length). Ensure the correctness of the E-CAM electronic data sheet. The cam command is executed according to the generated table.

4. Introduction of the program

A part of PLC program:

（1）The E-CAM initialization settings:

（2）The data processing and create the data table of E-CAM

The E-CAM function can only be executed if the table is generated correctly.

（3）The application of DECAM E-CAM instruction

5. Conclusion

This equipment mainly use WECON PLC E-CAM function of the function of flying shear. Compare to traditional mechanical cam, it reduced the mechanical and electrical parts in the complexity of the equipment, it is more flexible to use the mode to the occasion, double the production efficiency. In the application of WECON LX3VE PLC programming, just use the cam table and cam instructions can easily process the movement of follow, compared to ordinary PLC, it is more efficient, and also reflects the excellent stability of WECON PLC.

6. Picture of this equipment

I. Introduction

Cake machine is mainly used for all kinds of bread, cakes, biscuits and various types of plastic pastry production. The production process is simple, convenient, rolling and stretching the dual role. After opening the processing of baked goods processing baking better, baked products, color and flavor are superb.

2.The requirements of process

The dough to be processed is placed on a conveyor belt.Setting the  height of pressure each time,the frequency of drops, belt rotation speed and other parameters on the HMI.Pressing the reset button, the pressure roller will rise to the highest position.Pressing the start button, the conveyor belt with a dough get through back and forth under the roller. There is a photoelectric switch detects the dough around the roller.If the dough is detected pass,the conveyor will stop automatically.The pressure roller will automatically drop according to the setting parameters,which makes the bread become thinner gradually.Eventually, the thickness of the dough reaches the setting value.

3.Program

The model: LEVI-700LK,LX3V-0806MT-A2

1、The Inverter controls the speed and operation direction

2、Servo motor controls the height of the roller, which improves the accuracy of controlling lift

3、It will decline respectively according to the frequency and height of the finale descends.

4、Using photoelectric switch to detect dough, if the dough get through, the belt will stop running.

5、Conveyor belt driven dough, which get through under the controller back and forth, then will makes the bread become thinner gradually.

Advantages: Wecon 7-inch single-port HMI is economical and practical, LX3V series PLC  maximum output pulse 200K, precise positioning servo control.

 4.A brief introduction of the program（Part of the screen）

1、The main running screen: This screen is the automatic operation screen, mainly shows the current the height of roller, the speed of belt, the height of dropping and the times of dropping and so on.

2、Manual screen: This screen is mainly the manual operation of the device, as well as the various parts of the light.

3、The parameter setting screen: This screen is mainly set the speed of belt running the  speed of roller down and rising, the location of discharge .

4、The parameters screen of factory : This screen  mainly sets the device operating parameters according to the current situation which factory commissioning personnel provides.

The part of PLC programming

The part screen of  PLC communication with Inverter.

NO.1 The part of downing

5.The summary of project

1、Pay attention to the mechanical structure the servo control.

2、The speed adjustment of Inverter .

3、Pay attention to the distance and times of dropping.

6.The photo of equipment

1.General
This is the extend function in WECON HMI, the alarm information could be sent to users by short message, and users could control HMI by sending short message.

Note:
This function requires an extend module for sending and receiving short message.

2.GSM module test
WECON HMI requires AT command for short message function, so please check the short message module before making a communication between HMI and module.

2.1Testing tool
1)Serial debugging software;
2)RS232 cable, the pin defined as following shows;
PC Device
2 3
3 2
5 5

2.2 Steps
This section introduces how to test module.

Operating Procedure
1)Connect GSM module to PC via RS232 cable.
2)Open debugging software, and select right COM port for module.
3)Enter the AT command in software one by one. The command as 2.3 says.

2.3AT command
This section introduces how to test module by AT command.

Operating Procedure
1)Enter “AT” in debugging software; the module should reply “OK”.
2)Enter “AT+CSQ” to test signal value of GSM module.
at+csq
+CSQ:19,99

OK

3)Enter “AT+COPS?” to get the name of the service provider
AT+COPS?
+COPS:0,0, “China Mobile”

OK

4)Enter “AT+CSCA?” to get SMS center number
AT+CSCA?
+CSCA: “+8613800591500”, 145

OK

5)Set Message Format
Set “AT + CMGF = 0” to make the message format is PDU;
Set “AT + CMGF = 1” to make the message format is TEXT;

3.Project setting
This chapter mainly introduces how to set up the SMS function on PIStudio software.

3.1 Select the protocol
This section introduces how to select a protocol for SMS function.

Operating Procedure
1)Create a new project, as Figure 1 shows;

2)Select HMI model, using PI8070 as an example;
3)Select connection mode, using COM1 as an example;
4)Select PLC type, please select [Other protocol];
3.2 Short message setting
This section introduces how to set SMS function.

Operating Procedure
1)Please click “Project” –> “Communication” and please click “SMS module setting”, to open the setting screen, as Figure 2 shows.

 Send: Editing the sending parameters
 Recipient: Editing the receiving parameters
 Saving path: select the saving storage
 Display: it is for displaying all short message items
 Operation buttons
 Importing and export setting files

2)Set the sending message;
 Select the [Send];
 Click [Add] to open the sending setting windows as Figure 3 shows;

 SMS content: user could input the text directly or read the content from alarm text, also it could support read content from some registers, like the FIG 3 shows, use “$1”, “$2”… “$X” to define the registers;
 Edit the recipient: edit the receiver, as figure 4 shows, also use could import receiver from csv files. Also it could support “read recipient dynamically”, please use a text input/display object for phone number input, and the length for object is 8. In this mode, the SMS module will send to the default receiver and dynamical receiver. As FIG 3 shows.

 Trigger mode: there are 2 modes for user, one is sending circularly, and the other is bit trigger.
 Variety list: it is for editing variable for SMS content. There are a lot of data formats, like binary, octal, hex, unsigned, signed, BCD, string.
 Click [OK] to save the setting;

3)Receiving setting
 Select the [Recipient];
 Click [Add] to open the sending setting windows as Figure 5 shows;

 Display setting: user could enable it for displaying content of SMS. Please use text input/display object for it.
 Edit the sender: It is same as receiver setting.
 Action setting: It could support Bit and Word. User could control bit addresses and word address by send command.

3.3 Read recipient dynamically
This section introduces how to use [Read recipient dynamically] function.

Operating Procedure
1)Put [Character input/display] object in HMI screen;
2)Edit the address;

Phone number format
If users use the [read recipient dynamically] function, please note the it requires the fix format for entering phone number
Format: “;”+”country code”+ ”phone number”

For example
1)Signal number
;8615859715428
2)Multi-number
;8615859715428;8615859715429……..;8615859715423

4.Example
This project has 2 screens, one is for sending short message, there are 7 addresses for inputting the content of short message, and the other is for receiving short message, there are 2 addresses, one is bit address and the other is word address.

1.General
User permission is one of expansion function in PI Series HMI; it provides multi-level of permission for control HMI operations. User need to set the user and group when designing project. Different groups have different permission levels for accessing. Each user should be added to certain group, it is possible to add one user to different groups.
Operating record: it records user operations information, the records files are saved in HMI flash; its path is [\flash\UserOperationLogs.db].
When it is on simulator mode, the files are saved in C disk, its path is [C:\WECONUserMgrFileUserOperationLogs.db].

2.Function setting
This chapter introduces how to set the user permission in HMI project.

Operation Procedure
1)Create a new project or open a project;
2)Click the [Project] in menu;
3)Click [User Permission] in [Data Tool] toolbar, as Figure 1 shows;
4)Edit user name, click [User0] cell under [UserName], and then enter the user name, one project allows add maximum 20 users;
5)Edit password, click [User0] cell under [PassWord], and then enter the user name;
6)Edit description, click [User0] cell under [Desc], and then enter, description is not necessary;
7)Check the groups for each users, there are 11 groups beside admin;
8)Editing groups’ description, but it is not necessary;
9)Click [Save and Exit] button to complete settings;

3.Permission settings in object
This chapter introduces how to set the user permission in each object’s security setting screen.

Operation Procedure
1)Open the object setting windows;
2)Select [Security] windows;
3)Check the [User Permission];
4)Select [Level] to set permission level;
5)Enter [Log Message], it is for operation records, if it was empty, the operation for this object will be not be recorded;
6)Select the [Access Denied Setting] mode, the detailed for each mode, please refer to the help document;

4.Operation in HMI
This chapter introduces how to operate when HMI is running, especially in edit group. Using the attachment project as an example, there are four screens as following figures show;

3.1 Operation screen
There are some bit buttons and some numeric input/display objects, some requires the user permission, if the user lacks the operation privilege, the HMI will automatically pop up the user login interface.

3.2 Operation records
This screen only displays operation records in the object, all users can viewer the operations without permission.

3.3 User preview
This screen will shows all users information including password and permission level, so only admin permission can into this screen. If there are any changes for users, please click [refresh] button on the screen to display the correct information for all users.

3.4 Settings
This screen is used for setting user permission when HMI is running, [Edit Group] is a bit complex, so this section will mainly introduce how to edit group. The edit interface as Figure shows.

Operation Procedure
1)Enter user name (existing user) (case sensitive) or select the user in [User Preview] screen and then user name will be entered automatically;
2)Select the group in drop-list object;
3)Click [Select] button;
4)Click [Add User] button to add user into selected group;
5)Click [Delete User] button to delete user from selected group;
6)Click [Cancel] to close the interface;

1.Introduction
This case uses three counters to count time, it uses 24-hour clock as an example.

2. I/O list

3. Project

4.Explanation
The program uses M8013 (oscillation once per second) to provide pulses for the seconds counter C0. When C0 counts up to 60, i.e., for one minute, C0 automatically reset, and triggers C1 to count 1.
When C1 counts up to 60, i.e., for one hour, C1 automatically reset, and triggers C2 to count 1.
When the C2 counts up to 24, C2 automatically reset, 24-hour count is completed. If the user needs a 12-hour clock, just change 24 to 12.

1. Introduction

The equipment is a Hydrogen energy generator(we also say “Brown gas generator”, the “Oxygen-hydrogen machine”). We adopt the advanced hydrogen production technology, and creatively research the Electrolytic power supply, Resonant Electrolysis Control System,  electronic refrigeration systems, based on the IGBT. This application solved the problems that  the efficiency of Hydrogen energy conversion is low, high failure rate, poor stability. With WECON PI HMI, workers can control the equipment remotely. And the manufacturer of the machine can repair it remotely if simple fault happens.

2. Process requirements

The PI 8070 HMI communicates with the board which customized by customer via the MODBUS protocol. It alarms when the temperature or pressure beyond the setting limits. And it has the Start Button, Timing function, etc . With WECON Smart APP, it can support remote control. 

3. Solution

PI8070 communicate with the control board.

PI8070 HMI communicates with control board via MODBUS protocol. Parameters can be set on the HMI. For the remote control, HMI connect the Internet via USB WIFI in the factory, and then APP can monitor the HMI remotely. 

4. Program

   （1）Main Screen: this screen shows a overall screen of the system, including monitor, basic object of manual operation, and system parameter screen, etc. As below picture shows：

（2）Factory setting: enter the screen as administration, set parameters and functions.

（3）Login permissions: administrators and operators. Different operators’different permissions.

（4）Remote control function: with HMI USB port, WIFI Modules.

5. Application pictures

Ⅰ、Brief Introduction

Extrusion is a process used to create objects of a fixed cross-sectional profile. A material is pushed through a die of the desired cross-section. The two main advantages of this process over other manufacturing processes are its ability to create very complex cross-sections, and to work materials that are brittle, because the material only encounters compressive and shear stresses. It also forms parts with an excellent surface finish.

Extrusion may be continuous (theoretically producing indefinitely long material) or semi-continuous (producing many pieces). The extrusion process can be done with the material hot or cold. Commonly extruded materials include metals, polymers, ceramics, concrete, play dough, and foodstuffs. The products of extrusion are generally called “extrudates”.

Ⅱ、Characteristics

The main part of the plastic extruder is composed of extruder, extrusion system (machine), a transmission system and a heating and cooling system.

1.Movement of the extrusion with relation to the ram. If the die is held stationary and the ram moves towards it then it is called “direct extrusion”. If the ram is held stationary and the die moves towards the ram it is called “indirect extrusion”.

2.The position of the press, either vertical or horizontal.

3.The type of drive, either hydraulic or mechanical.

4.The type of load applied, either conventional (variable) or hydrostatic.

Ⅲ、Scheme

The control system is composed of HMI and PLC

HMI:LEVI-700L & LEVI-102L    PLC:LX3V-1412MT & 2 Units LX3V-4LTC

In HMI, users can operate PLC to control frequency conversion equipment, then it can change the main rod speed of the equipment.LX3V-4LTC PLC can collect multi-channel temperature data, and it has PID function that application of PLC in Constant Temperature Control.

Ⅴ、Introduction of Program  

HMI Program Screen

PLC Program Screen(Part)

Ⅵ、Summary  

1、Plastic extruder is mainly used to heat temperature control, it has multi temperature control, so that ensure the stability of plastic extrusion.

2、In the daily,plastic extrusion machine work will be a variety of failures, workers are sometimes difficult to judge, and therefore requires a comprehensive alarm information.

Ⅶ、Picture of Equipment

1、Brief

The specialty cold heading process uses high speed automated “cold-headers” or “part formers.” This equipment has the ability of transforming a wire into an intricately shaped part with tight and repetitive tolerances using a tooling progression at speeds up to 400 pieces per minute.

The cold heading process is volume specific and the process uses dies and punches to convert a specific “slug” or blank of a given volume into a finished intricately shaped part of the exact same volume.．

2、Solution Design

①HMI:Wecon LEVI-430T, PLC:LX2N-1208MT  Frequency converter

②Equipment

The two basic types of equipment used in specialty cold heading are “cold-headers” and “part formers.” Both use horizontal reciprocating rams and stationary bolsters. Stalcop uses equipment from single blow up to 5-die progression machines with cut-off sizes from 1/8 inch to 1 inch from global manufacturers.

③Tooling

The two major components of cold heading tooling are punches and dies. Punches transfer the required force from the machine to the material and provide close dimensional control on the internal part features. Dies confine and direct the material into the desired geometry and provide close dimensional control on the external part features.

3、Interface design 

Time parameter setting

4、PLC Design

（Part of PLC Program）

5、Product Image

I、Brief Introduction

A sander is a power tool used to smooth surfaces by abrasion with sandpaper. Sanders have a means to attach the sandpaper and a mechanism to move it rapidly contained within a housing with means to hand-hold it or fix it to a workbench. The automatic turning sander is widely available on Veneer production process, the production of standard parts, toys and crafts industry, decoration and furniture industry, floor wall panel building materials industry, etc..

II、Technological requirements 

Knob down（drivers start）→Start grinding wheel→Starting conveyor belt→Conveyor belt up or down→ Device fully activated

III、Characteristics

Woodworking sanders are usually powered electrically, and those used in auto-body repair work by compressed air. There are many different types of sanders for different purposes. Multi-purpose power tools and electric drills may have sander attachments.

1. Simple operation
2. High degree of automation
3. High production efficiency
4. Mature technology and Stability control
5. Assembly line

IV、Scheme

The control system is composed of HMI and PLC

HMI:LEVI-700L    PLC:LX3V-1616MR

Actually, Automatic Turning Sander:

1：Production alarm

2：Monitoring equipment

3：Fault alarm and protection

4：Current height Display

5：Frequency converter set and display（Via RS485）。

6：Equipment running state

V、HMI Program

HMI program(Part)

PLC program(Part)

VI、Summary

Sanding equipment unceasing renewal. As some new edge technology continue to emerge, the grinding quality and efficiency continue to improve.

Wecon’s HMI and PLC have the characteristics of high efficiency,stability. Such as accurate counting on the application of the high speed counting instruction, and 485 communication anti-jamming capability,.In order to meet the technical requirements of the customers, and improve the control precision and stability of the equipment. Wecon’s Products are gradually being recognized by the market.

 VII、Picture

Ⅰ. Introduction

Now SIEMENS PLC has released new firmware version, it is V4.0, in this version, plc contain new protect method, so many HMIs can’t communicate with it by old setting. Please view the following content to change some settings.

Ⅱ. Setting in WECON HMI

The setting in WECON HMI is same as before, select right protocol and communcation paratemers.

Ⅲ. Setting in SIEMENS PLC

1. Right-click on the PLC Project, press [Properties].

2. Select [Protection], check [Permit access with PUT / GET communication from remote partner (PLC, HMI, OPC, …)]

Ⅰ Reason

The following reasons will cause HMI crash.

• The non-English code in the software install path and project path, if those path contain other language code, like Spanish, Russian, and so on, when download project from software to HMI, it will cause HMI crash. The path of software and project only supports English.
• HMI version is different with software version. For example, you are using English software (LeviStudio), but you HMI are in Unicode version, if your project screens contain non-English characters, when you download project to HMI, the HMI will crash. If you are using Unicode software (LeviStduioU), but your HMI are in English version, when you download project to HMI, HMI will crash.
• Old Version: Vx.x.xx-P: multiLan yyyy-mm-dd, it means HMI is English version. Unicode version: Vx.x.xx-P: Unicode yyyy-mm-dd, it means HMI is Unicode version. Please connect HMI to software and click “HMI version” in download windows to check HMI version.

Ⅱ Solution

If the HMI crash by above reasons, it can be repaired by clients. Please try the following steps:

Step 1.  remove the power;

Step 2.  power holding in the bottom left corner of the screen.

Step 3.  it will display reset screen after 10 seconds

Step 4.  connect HMI to LeviStudioU, download project again, and updating os.

Step 1

Change the resolution of logo picture to be same with your HMI resolution.

4.3 Inch :480*272

7 Inch: 800*480

10.4 Inch: 800*600

Step 2

Save as your logo picture

Picture format: bmp,16 bits

Name: logo

Step 3

Encrypt the picture by “EncryptFile_214.exe” and will get a file named “Logo.NTB”.

Step 4

Compress the “Logo.NTB” to “Logo.zip”, then rename is as “Logo.osf”.

Step 5

Download the “Logo.osf” for HMI, the video “How to update the image file for HMI” will tell you how to download the “logo.osf”.