描述
本系統(tǒng)選用日本三菱的PLC為控制系統(tǒng),下面對(duì)整個(gè)系統(tǒng)的集成簡(jiǎn)單介紹:
1系統(tǒng)結(jié)構(gòu)與控制原理簡(jiǎn)介
本系統(tǒng)由一個(gè)FX2N-128MR-001主體CPU,一個(gè)FX2N-48ER擴(kuò)
展模塊,四個(gè)脈沖定位控制模塊FX2N-1PG,一個(gè)人機(jī)界面(HMI),四個(gè)步進(jìn)馬達(dá)驅(qū)動(dòng)模塊組成。
HMI與PLC直接通過(guò)通訊口進(jìn)行通訊,系統(tǒng)參數(shù)的設(shè)置以及手動(dòng)時(shí)的各部件的操作均通過(guò)HMI進(jìn)行;FX2N-48ER作為系統(tǒng)的自然擴(kuò)展,自動(dòng)識(shí)別,直接利用其I/O點(diǎn);四個(gè)FX2N-1PG上與PLC以FROM/TO指令進(jìn)行數(shù)據(jù)交換,下輸出高速正(或反)脈沖對(duì)驅(qū)動(dòng)模塊進(jìn)行控制,完成定位驅(qū)動(dòng)控制。
具體參看如下《系統(tǒng)連接原理圖》。
其它輔助控制按加工的工藝要求邏輯進(jìn)行,不再詳述。
2系統(tǒng)集成配置
本系統(tǒng)實(shí)際要求輸入點(diǎn)128點(diǎn),輸出點(diǎn)75點(diǎn),在上面的配置中輸出點(diǎn)數(shù)共84點(diǎn),輸入點(diǎn)數(shù)共84點(diǎn),不足夠的輸入點(diǎn)由觸摸屏軟元件滿足,整個(gè)系統(tǒng)配置的I/O總數(shù)如下:128+48+32(每個(gè)特殊模塊點(diǎn)用8個(gè)I/O點(diǎn)),共208點(diǎn),沒(méi)有超過(guò)系統(tǒng)最大配置容量256點(diǎn)。
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