【導(dǎo)讀】重點(diǎn)分析了系統(tǒng)軟硬件設(shè)計(jì)部分，并給出了系統(tǒng)硬件接線圖、PLC控制I/O. 端口分配表以及整體程序流程圖等，實(shí)現(xiàn)了電鍍生產(chǎn)自動(dòng)化，提高了生產(chǎn)效率，降低了勞動(dòng)強(qiáng)度。為適應(yīng)現(xiàn)代傳統(tǒng)的工業(yè)控制系統(tǒng)，我們還采用了基于組態(tài)王軟

　　

【正文】 g, adjustment provisions (1) halfyearly or quarterly inspection PLC cabi terminal connections, and if time to reloose strong local connection。 (2) of the cabi to the host power supply voltage of the monthly resurvey work。 Second, the provisions of cleaning equipment on a regular basis (1) every six months or a quarter of the PLC to clean, cut off power to the PLC power supply to the power rack, CPU board and input / output board i n turn be removed to purge, clean and then in turn installed in situ, will all link to resume evacuation call and start the host PLC. PLC box carefully sweeping health。 (2) every three months to replace the power rack below the filter。 three maintenance preparation, maintenance of order (1) ready before maintenance tools。 (2) To protect the ponents and the template does not function no fault damage, must be protection devices and serious preparations for antistatic。 (3) maintenance scheduling and operator contact before and well, be linked to overhaul licensing office hung maintenance card。 39 4, equipment and method of disassembly sequence (1) downtime, must be two or more monitoring operation。 (2) the way the CPU on the front panel select switch from the Run to stop position。 (3) Close the PLC power supply mains, and then close the other to the power supply module Osaka。 (4) connected to the power supply rack power cord clear line number in mind and remove the link location, then remove the power rack and rack screws connected, power rack can be removed。 (5) CPU motherboard and I / 0 board in the bottom of the screw rotation after template removed。 (6) installed in reverse order。 5, maintenance process and technical requirements (1) measure voltage, use a digital voltmeter or accuracy of 1% of the multimeter, measure (2) the power rack, CPU board can only be removed when the main power cut off。 (3) RAM module to remove or insert the CPU from the CPU prior to disconnect the PC39。s power supply, so as to ensure the data is not confused。 (4) before removing RAM modules, check the battery module is working correctly, if the battery fault light is removed when the PAM module content will be lost。 (5) input / output board should be removed before the first turn off the mains, but if the production of necessary I / 0 boards can be removed at runtime programmable controllers, but the CPU board QVZ (overtime) lights。 (6) pluggable template, to be more careful, gently, and the goods shipped out of static electricity。 (7) the replacement of ponents not live action。 (8) Maintenance must be placed after the template installed in place Second, installment and wiring 40 (1) The power line, the pilot wire as well as the PLC power line and the I/O line should distinguish the wiring, between the insulating transformer and PLC and I/O should use the double rubberized wire connection. (2) PLC should be far away from the strong jamming source like electric welding machine, the high efficiency silicon rectifier unit and the largescale power equipment, cannot install with the highpressured electric appliance in the identical switch cabi. (3) The input and output of PLC are best separate the line, the switch quantity and the simulation quantity must separate the placing. The simulation quantity signal39。s transmission should use the shielded wire, the shielding layer should an end or the both sides earth, and the earth resistance should be smaller than the shielding layer resistance 1/10. (4) The PLC elemental area and the expansion unit as well as functional module39。s ties cable should lie alone, prevents the outside signal the disturbance. (5) The exchange output line and the directcurrent output line do not use the identical root electric cable, the output line to be far away from the high tension line and the power line as far as possible, avoids parallel. Third, I/O end wiring 1. Input wiring (1) inputs the wiring not to surpass 30 meters generally. But if the environment disturbance is small, when the loss of voltage is not big, the input wiring may suitable long. (2)Inputs/the output line not to be able to use the identical root electric cable, the input/output line to be separated. (3)Uses the normally opened contact form to connect the input end as far as possible, causes the establishment the trapezoidal chart to be consistent with the relay schematic diagram, is advantageous for reading. 2. Outgoing junction (1) The output wiring divides into the independent output and the public output. In not group, may use the different type and the voltage class output 41 voltage. But can only use the identical type, the identical voltage class power source in the identical group39。s output. (2) Because the PLC output element is sealed on the print circuit wafer, and connects to the terminal strip, if will connect output element39。s load short circuit, will burn down the print circuit wafer, therefore, application fuse protection output element. (3)Uses when the relay outputs, withstands inductive load39。s size, will affect relay39。s service life, therefore, time use inductive load the selective relay working life must be long. (4) The PLC output load possibly has the disturbance, must therefore take the measure to control, if directcurrent output39。s after flow guarantees protects, the exchange output anti acmodates the absorbing circuit, the transistor and the bidirectional thruster output bypassed resistor protection. Fourth, outside security electric circuit to guarantee that the ove rall system can under the secure state the reliable work, avoids, because the external power supply breaks down, PLC to present the heavy economic loss which and the person casualty exceptionally, the disoperation as well as