實際組態 已存在硬件中的實際組態和參數分配。可以從CPU直接上傳到PC。選擇菜單“PLC" “UPLOAD"。5.2 PLC基本程序

西門子提供了一些PLC基本程序，用戶可以根據實際情況調 這些標準塊即可，而被系統占用的功能塊不能再被編輯,基本程序項目庫由組織塊（OB），功能（FC），功能塊（FB）三種邏輯塊和數據塊（DB）構成。OB1為CPU循環掃描時間內一掃描的主程序，FC或

FB被CPU執行的條件是必須是在組織塊（OB）中被調用，同時FB和FC也能實現子程序的嵌套。FB與FC的區別在與它們的變量聲明表中能夠定義的參數類型不同。當FC的程序執行完成后，FC的參數不能被保存；當FB的程序執行完成后，FB的參數能被保存。在OB1中調用FC時，只需直接調用，如：CALL FC1；而調用FB時，必須為其分配一個背景數據塊，用來保存FB的參數，如：CALL FB1，DB7。背景數據塊的數據格式與相應FB的變量聲明表的數據格式相同，不允許用戶進行修改。5.3 用戶基本程序

PLC程序的編制全部按照正邏輯的設計，即不論物理信號是高電平還是低電平有效，邏輯“1"表示信號有效。所有物理輸入輸出信號都需經過邏輯處理好，才能進行邏輯運算，也就是先要定義輸入輸出的信號有效和輸入輸出信號的邏輯，再將輸入輸出的物理信號和邏輯參數異或，其結果與有效參數（使能參數）與，后送入輸入輸出緩沖區中。現就工作臺的運動控制為例加以說明。

6結束語

在整個機床的改造過程中涉及到了許多測試，調試的問題，在硬件設備安裝好后有進行了許多調試工作。PLC程序的編制綜合考慮了工藝與加工要求的問題，驅動器的參數設置也需考慮具體的加工要求。圓網印花機系統簡介

圓網印花機分電機傳動系統是我公司承擔創新基金支持項目的一個子項。"十五" 期間，染整設備網絡化、信息化成為當前發展的主流。科威公司的分傳動系統底層采用工業控制局域網（ CAN BUS-Controller Area Network ）實現底層數據在人機界面上集成，并具有遠程網絡監控功能，達到控制層自動化，操作層信息化。在高溫、高濕、強腐、強電磁干擾方面結合行業特征做了大量的可靠性實驗，為用戶提供了一個技術、實用可靠的圓網分傳動控制系統。

圓網印花機特點

1.導帶單元配備編碼器（ 1500-5000P/ 轉）

2.印花單元配備光電檢測開關

3.一個驅動節點管理 1-4 個單元的驅動

4.一個操作節點管理 1-4 個圓網的操作

5.系統各節點間采用 CAN 協議現場總線連接

6.采用高性能步進電機作為系統各單元執行機構的驅動

圓網印花機技術指標procedures. This paper introduces the overall structure of the automatic cleaning machine, the working condition requirement, the hardware realization of the system and the thinking of the program design. This paper explains how to use PLC function to achieve automatic positioning of cleaning machine, automatic travel protection and other automatic processes, lists some important procedures. Introduction automatic cleaning machine is the company's production line on the important after-process processing equipment, the company mainly produces automotive engine internal products, products after the car, milling, after drilling and other multi-process, the surface is covered with a large number of dirt such as aluminum chips of cutting fluid. Such dirt must be cleaned before it can be assembled and packed. If manual cleaning is used, it will result in low efficiency, high labor intensity and can not realize automatic production, as well as product scratches, even scrap and so on. Because the company's cleaning machine is a special-purpose machine, there is no ready-to-buy product on the market, such as equipment factory custom-made, there will be long delivery time, affect the launch of new products on the market, high price, can not well meet the working condition requirements and other restrictions, in the above conditions, decided to make their own automatic cleaning machine. 2. GENERAL STRUCTURE OF AUTOMATIC CLEANING MACHINE GENERAL STRUCTURE OF AUTOMATIC CLEANING MACHINE: running system (running motor, driving device, positioning device of conveying position, conveying device, etc.) , water spray system, air jet system, electrical control system. The overall structure is shown in figure 1. The hardware part 1) the walking system is the key part of the automatic cleaning machine, its stability directly affects the reliability and continuity of the whole equipment operation. Because of the consideration of cost, the walking motor does not need stepping motor, but uses three-phase asynchronous motor produced by Beilun speed-regulating Motor Factory. The Motor has the advantages of power-off brake and reducer, reliable performance, small input power and large output torque. The conveyor belt adopts stainless