A quick read industrial robot and absolute relationship - PLC

Often asked, want to learn the industrial robot operation, do not understand the PLC?

as a beginner, appear this kind of problem is the more common, and slowly read the following article easy to understand, you can probably understand industrial robots absolute relationship with the PLC.

let's know about the basic structure and principle of industrial robots is simply the general hardware structure of the industrial robot - from 3 Six servo drive systems work together to complete all kinds of action, and control of industrial robots is essentially control the several motor forward, reverse, turn hurry up, or turn slowly, this I believe everyone is understandable.

then studied electrical control people all know, in order to control several motors according to your meaning of this action, nature needs a device similar to the PLC as a control platform, give you write a program, a similar to the touch screen man-machine interface to call the shots. Here is the integration of the robot controller, 'PLC' 'touchscreen' is the teaching implement.

, in fact, in the whole industry of industrial robots, robot value accounts for roughly one-third of ontology, then the other two thirds gone? Two-thirds

this is primarily a robot integration of peripheral equipment and software industry. As we all know, the industrial robot is more and more like a standard parts, if you want to apply industrial robot according to the actual flexible, will need to cooperate to participate in the peripheral equipment and industrial software, industrial robots is not isolated, a robot workstation, often need to peripheral equipment, such as jig, conveyor belt, displacement of welding machine, mobile guide rail and so on, these roles are how to cooperate with each other, need to coordinate PLC.

and a collaboration, and require multiple industrial robot station in production line and product line includes other relatively independent automation equipment, such as AGV car, automated stereoscopic warehouse, spraying equipment, assembly equipment, and so on. When the workstation and workstations before need higher layer of PLC controller to coordinate.

the simplest example:

A conveyor line, in A, B, C three position has three industrial robot workstation, on behalf of the three points need to be three kinds of process operation, PLC control first conveyor belt movement, the workpiece to station A, location of A position sensor to detect the workpiece in place, to send signals to PLC, PLC receives the input signal, and the location of A comprehensive other external signal judgment robot can start to work, by PLC controller output sends A signal to the robot A: ya you can start working, hurriedly. After I finished my work A robot, and then feedback: A complete signal to PLC brother my job done, you continue. PLC accept the signal after continue to start the motor control conveyor belt artifacts carried location B, repeat the above process logic.

dear reader, read the above this passage, I think your question solution at least half. Now it is time to jump to conclusions, that is, the application of industrial robots without the participation of PLC, and the future in the field of industrial robot industry really make a difference is the personalized solution for industrial robot, so learning can only operate using industrial robot technology, then you are a mechanic operation rather than application engineer! For new or crossed into the industrial robots, learners should have the basic theory of electrical automation, best if there is no electrical basis that must start from the basic electric circuit and PLC programming.

> > > how the robot is connected to the PLC communication? Industrial robots are used in the real application on the production line ( Such as car assembly lines, semiconductor wafer handling, etc. ) , picking robot standalone various track debugging good, also with the action demands of production line, which is also connection and PLC communication, interactive signals on both sides, when PLC controller for robots to carry, robot handling for notification of PLC, through such interactive communication, the robot can be as 'a' on the whole production line, and other institutions on the production line of complete the production task.

> > > industrial robot and PLC communication connection

bring figure 1: PLC and robot system

above PLC adopts Siemens brand, S7 - 300 as the upper machine, S7 - 200 connected to the machine through the I/O signal; S7- With S7-300 200 using Profibus bus connected; S7- 300 connected to industrial robots using I/O signals; Industrial robots to use their own communication cable between subject and the controller ( Directly plug) The connection.

bring about figure 2: S7 - 300 ( CPU - 313). Input and output signal

bring about figure 3: S7 - Input and output signals (200 Control lathe)

bring figure 4: S7 - Input and output signals (200 Control washing bed)

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