Programming of PLC of numerical control machine tool measure

Different type PLC has configuration of familiar PLC hardware and instruction system different hardware composition and function index. Memory capacity of their basic I/O check the number and patulous limits, program often the difference is very big. Accordingly, before PLC programming, want to use PLC model to place, hardware is configured (be like inside whether should outfit PLC increase I/O board, general-purpose whether should PLC increase I/O pattern plate to wait) make a choice. Main to the function index of PLC consideration is inputted / output check the number and memory capacity. Additional, the index such as the technical standards of function of the processing time that chooses PLC, instruction, timer, tally, in-house relay, amount also should satisfy a requirement. 2.

Need of file of signal of the interface that make designs and the interface technology file of the work out has: Data of watch of input and graph of principle of output signal circuit, address, PLC is expressed. These files are the technical data with indispensable program of the PLC that make. Address of all interior that use in echelon graph and exterior signal, signal, name, transmission direction, with the set data that functional instruction concerns, wait to be mirrorred in these files with the electric equipment component that signal concerns. Outside the specifications that the personnel of work out file uses CNC device and PLC controller except need control, still need to have certain electric design knowledge. 3.

Control of logic of graph of echelon of scale echelon graph is sequential design, from manual scale echelon the graph begins. In scale process, the member that design can work in anatomize machine tool principle or movement are sequential on the foundation, the logistic order that waits for descriptive signal and time of machine tool campaign with flow chart, sequential chart concerns, the control relation that devises echelon plan accordingly next is ordinal. Pursue medium in echelon, want to use many input contact symbol. The member that design should make clear input signal is " 1 " and " 0 " the relation of condition. If exterior signal contact is to often open contact, when contact movement (close namely) , input signal to be " 1 " , if signal contact is to often close contact, when contact movement (open) namely, input signal to be " 0 " . A devises well echelon plan is divided outside wanting to satisfy machine tool pilot to ask, still should have the least pace number, briefest order to handle time and the logistic relation that understand easily. 4.

With handiwork of program of PLC of work out of process designing machine the echelon of scale pursues, can change into the form that the instruction expresses first, cheng of reoccupy clavier input is made up machine undertake modification. If design member make up to Cheng machine is more familiar, and have regular PLC programming knowledge, also but echelon of scale of leave out handiwork pursues this one pace, pursue in echelon of the work out on process designing machine directly program. Because Cheng makes up machines and tools to have rich editor function, can very the operation such as the indication that implements a program conveniently, input, output, memory. Accordingly, use Cheng to make up program of machine work out to be able to improve work efficiency greatly. 5.

Of PLC program debug debug through moving with the program need that affirms it is good to make up. Generally speaking, PLC program should be passed " emulate debug " and " debugging on-line " 2 measure. Emulate debugging is to be below lab condition, use emulation device or imitate experiment stage to undertake debugging a program. Debugging on-line is machine tool, CNC device, PLC device and connection of process designing equipment rise undertake overall Electromechanical moves debug. Only such, ability affirms the validity of the program finally. 6.

The solidify of PLC program will be not had through relapsing to debug and affirm by accident PLC program uses process designing machine or process designing implement in writing EPROM, this calls the solidify of PLC program. On PLC device, with stored the EPROM of ordinal program replaces RAM, make the machine tool runs an examination in all sorts of means dirty. If was satisfied overall pilot each technology requirement, criterion of PLC program debug announce an end namely. 7.

The memory of the program and file trim the PLC program of debugging on-line qualification, it is important technical file, arrive except solidify EPROM China and foreign countries, still should stock floppy disk. The main technique data that technical file is analytic breakdown reason, patulous function and program of PLC of work out other. Should arrange to program document so file. CNC Milling