這里包括三個(gè)方面含義:
1、產(chǎn)品壽命。大致可以保證所選擇的PLC的使用年限,盡量購(gòu)買(mǎi)生產(chǎn)日期較近的產(chǎn)品;
2、產(chǎn)品連續(xù)性。生產(chǎn)廠(chǎng)家對(duì)PLC產(chǎn)品的不斷開(kāi)發(fā)升級(jí)是否向下兼容,這決定是否有利于現(xiàn)系統(tǒng)對(duì)將來(lái)新增加功能的應(yīng)用;
3、產(chǎn)品的更新周期。當(dāng)某一種型號(hào)PLC(或PLC模塊)被淘汰后,生產(chǎn)廠(chǎng)家是否能夠保證有足夠的備品(或備件)。這時(shí)應(yīng)考慮選擇當(dāng)時(shí)比較新型的PLC。
慧星售后服務(wù)與技術(shù)支持
1、選擇好的公司產(chǎn)品;
2、選擇信譽(yù)好的代理商;
3、是否有較強(qiáng)的售后服務(wù)與技術(shù)支持。
慧星性?xún)r(jià)比
相對(duì)于自控系統(tǒng)性能的好壞優(yōu)先于價(jià)格的選擇。只是在前面幾項(xiàng)比較接近,又不易選擇時(shí),才考慮價(jià)格因數(shù),選擇性?xún)r(jià)比比較高的產(chǎn)品。
在實(shí)際選型過(guò)程中,往往受到多方面的制約,不一定要考慮以上全部方面,但其中有些項(xiàng)是必須考慮的,而存在的問(wèn)題也必須通過(guò)其它替代方式加以解決。
一般來(lái)說(shuō)通過(guò)前5項(xiàng)的比較,已可確定2~3種產(chǎn)品,再考慮到后幾項(xiàng),便可選中較滿(mǎn)意的PLC。隨著科學(xué)技術(shù)的不斷發(fā)展,PLC產(chǎn)品也一定會(huì)有一個(gè)統(tǒng)一的標(biāo)準(zhǔn)。那時(shí),挑選PLC將不再是困難的事情。
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慧星產(chǎn)品中心 http://www.huixingplc.com/
E-mail:1905391339@qq.com
QQ :1905391339
熱線(xiàn):0592-7190353 手機(jī):15359261131
傳真:0592-7190350
慧星李工執(zhí)著堅(jiān)守,堅(jiān)韌篤定,專(zhuān)注于工業(yè)自動(dòng)化產(chǎn)品的銷(xiāo)售和推廣以及技術(shù)探討。 地址:廈門(mén)市同安區(qū)鳳山一里50號(hào)1915單元
慧星公司是一家性的貿(mào)易型企業(yè),主要供應(yīng):A-B 1756 PLC \1747 PLC\1746 PLC \1771老PLC\1769小型PLC\1785\2711觸摸屏 等系列。
西門(mén)子:高壓斷路器,過(guò)載繼電器,熱繼電器,S7-200,S7-300,S7-500,6DD,6AV,6GK等系列
施耐德:PLC,昆騰140 PLC系列
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很多常用型號(hào)都有庫(kù)存現(xiàn)貨,個(gè)別沒(méi)有現(xiàn)貨的可以訂貨,價(jià)格實(shí)惠,貨期短,提供售后質(zhì)保。
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