CN202199900U

CN202199900U - Welding controller based on DeviceNet mode and RS485 mode

Info

Publication number: CN202199900U
Application number: CN2011202587888U
Authority: CN
Inventors: 张爱民; 韩焕丽; 张振普; 黄力; 蔡维伦; 王建波
Original assignee: Guangzhou Numerical Control Equipment Co Ltd
Current assignee: Guangzhou Numerical Control Equipment Co Ltd
Priority date: 2011-07-21
Filing date: 2011-07-21
Publication date: 2012-04-25
Anticipated expiration: 2021-07-21

Abstract

The utility model discloses a welding controller based on a DeviceNet mode and an RS485 mode. The welding controller comprises a CPU (Central Processing Unit), a digital-to-analog converter, an analog-to-digital converter, an RS485 receiving and sending module and a Devicenet receiving and sending module, wherein both the digital-to-analog converter and the analog-to-digital converter are connected between the CPU and a welding machine; and both the RS485 receiving and sending module and a DeviceNet receiving and sending module are connected between the CPU and a robot demonstration box. The welding controller has the advantages that the remote control can be achieved, the safety of operating staff is improved, the operation is convenient and quick, the data loss rate is minimized, the anti-interference performance of a system is enhanced, the direct communication with a Guangzhou numerical-control robot can be carried out, and robot control to the welding machine is realized.

Description

Welding controller based on DeviceNet, RS485 mode

Technical field

The utility model relates to industrial welding machine and controls the field, is specifically related to possess DeviceNet, the welding controller of two kinds of bus communication modes of RS485.

Background technology

Welding machine mainly is made up of devices such as power supply, wire-feed motor, protection gas.Power supply is mainly wire-feed motor the current/voltage of the starting the arc, blow-out and the operating voltage of wire-feed motor is provided; But the current/voltage manual adjustments of the starting the arc, blow-out also can be carried out digital control through the RS485 passage; Wire-feed motor is provided at welding wire required in the welding process, but the most advanced and sophisticated distance of manual adjustments welding wire from workpiece; The protection device of air is provided at needed protection gas in the welding process, and is oxidized under hot environment to prevent welding wire.

It still is fairly simple interface that current robot cooperates with the manipulation of welding machine; Comprise that some external welding machine controls all are to belong to half artificial automanual control basically; Be specially: regulate the size of adjustable resistance through remote-control box, and then in welding machine, current/voltage is regulated; And the operation of details such as some air pressure, receipts arc, the starting the arc can only be gone control by manual work fully.In addition, existing remote-control box has been in order to have accomplished the decay and the interference of shatter-resistant, waterproof, minimizing signal, the line footpath and the thickness that increases the cable shielding layer that just must when increasing cable length, increase cable, like this remote-control box body just do heaviness very; In addition, existing remote-control box does not have senior intelligence interface yet.

At present, one type of teach box that possesses the remote operation robot has also appearred on the market.This type teach box has a good man computer interface, can be in man-machine interface all working state of dissociating welded parts machine, and to the duty that is fit to preserve, record, with calling of the convenient operation of working environment next time; Under the comparatively serious abominable industrial environment of interference, still can accomplish longer communication distance greater than 10m; And the parameter of welding machine can accurately be set, can reach 162 grades required precision; Can in the operation of multirobot welding machine, have remarkable advantages to the information transmission of networking.But when handling,, just show slightly heavy if operate with the remote-control box butt welding machine of teach box and welding machine respectively with the robot butt welding machine, also very inconvenient.

The utility model content

The purpose of the utility model is the shortcomings and deficiencies to prior art; Welding controller based on DeviceNet, RS485 mode is provided; The digital interface of intelligence can be provided; Overcome the manual inferior position of traditional welding machine, also avoided the inconvenience that adopts teach box and remote-control box butt welding machine to operate.

To achieve these goals; The utility model adopts following technical scheme: this comprises that based on the welding controller of DeviceNet, RS485 mode CPU processor, digital to analog converter, analog-digital converter, RS485 receive sending module and Devicenet receives sending module; Digital to analog converter and analog-digital converter all are connected between CPU processor and the welding machine, and RS485 receives sending module and Devicenet reception sending module all is connected between CPU processor and the robot teach box.

Said digital to analog converter is 4 port number weighted-voltage D/A converters.

Said analog-digital converter is 4 channel modulus converters.

The principle of the utility model is following: all of welding robot are handled the processing of all passing through teach box; And teach box has man-machine interface; The data DeviceNet, RS485 mode are exported; The data of sending are exported after treatment, actions such as the voltage of control welding machine, electric current adjustment, the starting the arc, blow-out.All data in real time are preserved, and to different welding occasions, different welding movement locus calls different welding parameters, accomplish quick, convenient.The data in real time data of welding machine feed back to the robot center processor, so that robot does relevant processing action.

Compared with prior art, the utlity model has following advantage:

1, have good man-machine interface, simple to operate, convenient and swift, make occasion the multiplex (MUX) and can accomplish advantages such as preservation, record, quick calling data.

2, communication and control mode have characteristics such as programmable wide region multiple voltage is regulated, long Distance Transmission, multiple standards interface in one.

3, be applicable to that needs are grown distance, butt welding machine is handled and monitored, the place that working environment is more abominable in real time; Need to be specially adapted to occasions such as multichannel analog amount, DA/AD conversion and control able to programme, high voltage resolution ratio, Fast Time DA/AD conversion, the input and output of many IO node and welding machine multiple working conditions feedback information.

Description of drawings

Fig. 1 is the structured flowchart of the utility model;

Fig. 2 is the control flow chart of the utility model.

The specific embodiment

Below in conjunction with accompanying drawing and embodiment, the utility model is further described, but the embodiment of the utility model is not limited thereto.

Embodiment

Devicenet bus communication mode is a kind of style of opening, the low cost that meets global industrial standard, the high performance bus communication mode based on the CAN technology that grows up the mid-90.It has reduced the cost and the time of distribution and mounting industrial automation equipment when providing multiple vendor with the interchangeability between base part.It is connected to network with industrial equipment, thereby has eliminated expensive hardwire cost.The direct interconnection property improvement communication of equipment room, and considerable device level diagnostic function is provided simultaneously, this is difficult to realize through hardwire I/O interface.The numerous characteristics of Devicenet follows in CAN, and the CAN bus is a kind of design excellent communications bus, and it is mainly used in the real-time Transmission control data.The main feature of DeviceNet is: short frame transmission, and the maximum data of every frame is 8 bytes; Nondestructive arbitration technique by turn; Network can connect 64 nodes at most; Data transmission bauds is divided into three kinds of 125kb/s, 250kb/s and 500kb/s; Point-to-point, lead or master/slave communication mode more; Adopt the physical and datalink layer stipulations of CAN.

As shown in Figure 1; The utility model welding controller comprises that CPU processor, digital-to-analogue (DA) converter, modulus (AD) converter, RS485 receive sending module and Devicenet receives sending module; Digital-to-analogue (DA) converter and modulus (AD) converter all are connected between CPU processor and the welding machine body, and RS485 receives sending module and Devicenet reception sending module all is connected between CPU processor and the robot teaching box body.In addition, the utility model also comprises several I/O interfaces, is used for being connected with other equipment.Digital-to-analogue (DA) converter, modulus (AD) converter are respectively 4 passage digital-to-analogue (DA) converters, 4 passage modulus (AD) converters.

Of Fig. 2, the control flow of the utility model welding controller may further comprise the steps:

S1, user are through teach box input welding instruction and parameter, and teach box receives instruction and sends to the robot master controller.

S2, master controller interpretative order also are sent back to teach box with current and voltage data.

S3, teach box controller obtain corresponding parameters such as welding current voltage, send to RS485 reception sending module or Devicenet reception sending module through RS485 or Devicenet bus then.

S4, controller body CPU processor read the data that RS485 receives sending module or Devicenet reception sending module, judge then whether the data that read are correct; If correctly, add the status information of current welding machine, feed back to the teach box controller again.

S5, teach box controller are differentiated feedback data, so that correctly dispose the welding machine parameter.

S6, controller body CPU begin the butt welding machine parameter and are configured, and carry out the welding action, wait for the welding process completion.

S7, CPU processor send the I/O signal through the I/O interface, control welding machine work-based logic process.

The foregoing description is the utility model preferred implementation; But the embodiment of the utility model is not restricted to the described embodiments; The substitute mode that other any do not deviate from change, the modification done under spirit and the principle of the utility model, substitutes, combination, simplification etc. all should be equivalence is included within the protection domain of the utility model.

Claims

1. based on the welding controller of DeviceNet, RS485 mode, it is characterized in that, comprise that CPU processor, digital to analog converter, analog-digital converter, RS485 receive sending module and Devicenet receives sending module; Digital to analog converter and analog-digital converter all are connected between CPU processor and the welding machine, and RS485 receives sending module and Devicenet reception sending module all is connected between CPU processor and the robot teach box.

2. the welding controller based on DeviceNet, RS485 mode according to claim 1 is characterized in that, said digital to analog converter is 4 port number weighted-voltage D/A converters.

3. the welding controller based on DeviceNet, RS485 mode according to claim 1 is characterized in that said analog-digital converter is 4 channel modulus converters.