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問(wèn):我在一個(gè)機(jī)架里需要同時(shí)擺放數(shù)字量跟模擬量的輸入輸出模塊,擺放上有什么需要注意的嗎?我看見(jiàn)有的項(xiàng)目把CPU放在數(shù)字量模塊的后面,CPU的后面是模擬量輸入輸出模塊,為什么要這樣放,還有系統(tǒng)為什么會(huì)自動(dòng)識(shí)別I/Q的地址?
問(wèn)題補(bǔ)充:8點(diǎn)輸入,U/I 6ES7 311-7KF02-0AB0
2點(diǎn)輸出, 6ES7 322-5HB00-0AB0
這兩個(gè)是什么意思?。?br />
答:西門子S7-300PLC采用標(biāo)準(zhǔn)的模塊化結(jié)構(gòu),下面以僅包含一個(gè)主機(jī)架無(wú)擴(kuò)展機(jī)架為例說(shuō)明
電源模塊、CPU模塊和接口模塊(用于擴(kuò)展機(jī)架用)在機(jī)架上的槽位是固定的,不可以隨便安裝,你一定是看錯(cuò)了,CPU一定在所有信號(hào)模塊的前面,不可能在信號(hào)模塊(數(shù)字量I/O、模擬量I/O)的后面;
在0號(hào)機(jī)架(主機(jī)架)上,1-3號(hào)槽位是固定的:1號(hào)槽位安裝電源模塊(也可不用電源模塊,空缺);2號(hào)槽位為CPU模塊;3號(hào)槽位為安裝接口模塊(用于擴(kuò)展機(jī)架,如IM360模塊);4-11號(hào)共8個(gè)槽位可自由分配信號(hào)模塊(數(shù)字量I/O、模擬量I/O)、功能模塊(FM)和通信處理器模塊(如工業(yè)以太網(wǎng)模塊CP343-1),沒(méi)有順序之分,一般習(xí)慣把功能模塊和通信處理器模塊放在信號(hào)模塊的后面;但一旦把信號(hào)模塊插入某個(gè)槽位,那么信號(hào)模塊的地址范圍與模塊所在的機(jī)架和槽位號(hào)就有關(guān),一般地址自動(dòng)默認(rèn),你也可以自己修改輸入/輸出地址;
6ES7 331-7KF02-0AB0模塊是8個(gè)模擬量輸入通道,每個(gè)通道的分辨率為13位,每2個(gè)模擬量通道一組,每個(gè)通道可以分別設(shè)定為電壓、電流、電阻和溫度輸入;
6ES7 322-5HB00-0AB0模塊是分布式智能模塊ET200M里的標(biāo)準(zhǔn)模擬量模塊,為A0X12bit,為2個(gè)模擬量輸出通道,每個(gè)通道的分辨率為12位。
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