MPCKT55NAX20N施耐德觸摸屏
MVME2306MV2306VX
MVME162-23
MVME2600-2MVME2600
MVME2700-761I/O01-W3287F01-W1668B59D#1
MVME610I/OModule
MVME600I/OModule
MVME712/M
MVME-705AMVME705A
MVME104
01-W299D01D
MVMECherokeeSP309-1B
MVME215-1
MVME2400
MVME2434-1
MVME162-01
MVME14764-W5892B01B
MVME712-15I/OTRANSITION
MVME101SECSCPU84-W8529B01C
MVME12184-W8293801
MVME01-W3584B
MVME2603-761
MVME2700-761
MVME101ASECS84-W8529B01C
MVME147-02264-W5892B01B
MVME162-523A64-W4125C01A
MVME14764-W5401C01A
MVME710B
MVME332XTP
MVME-333-2
MVME333-201-W3503B-06E01-W3503B06E
MVME147-02364-W5892B01B
MVME10164-W5734B01C
MVME31601-W3336B01A
MVME204-2F64-W5178B01
MVME340B64-W5737B01B
MVME226-264-W5697B01B
MVME226-164-W5697B01B
MVME147-01364-W5401C01AN08001-4041-000-06
MVME16764-W6972B01A
MVME147-01464-W5401C01A
64-W5892B01BMVME147-023
MVME147-023
SYS3204NY043
SCSI-TCIRCUITCARD408091676408091668
MVME2700-76101-W3287F01-W1668B59D
MVME110-1AMAT0100-11018
MVME188A
MVME2603
MVME-332MVME332
MVME167PA-36SE
MVME955A-1S8000
MVME162-510A
MVME-147SA-1
MVME162-212
MVME935MVME-935
MVME147-023
MVME333S-2GRA
MVME162-263
MVME712/M
MVME-332XTS
MVME332XTS01-W3822B03B01-W3822B-03B
MVME-167
PNOZV30S
費希爾控制器 33B7073X032
庫卡 71-051-676 710516760005022165
霍尼韋爾 XD505A
PLC輸入輸出(I/O)點數的估算
I/O點數估算時應考慮適當的余量,通常根據統(tǒng)計的輸入輸出點數,再增加10%~20%的可擴展余量后,作為輸入輸出點數估算數據。實際訂貨時,還需根據制造廠商可編程邏輯控制器的產品特點,對輸入輸出點數進行圓整。
二、存儲器容量的估算
存儲器容量是可編程序控制器本身能提供的硬件存儲單元大小,程序容量是存儲器中用戶應用項目使用的存儲單元的大小,因此程序容量小于存儲器容量。設計階段,由于用戶應用程序還未編制,因此,程序容量在設計階段是未知的,需在程序調試之后才知道。為了設計選型時能對程序容量有一定估算,通常采用存儲器容量的估算來替代。
存儲器內存容量的估算沒有固定的公式,許多文獻資料中給出了不同公式,大體上都是按數字量I/O點數的10~15倍,加上模擬I/O點數的100倍,以此數為內存的總字數(16位為一個字),另外再按此數的25%考慮余量。在制造工業(yè)中存在大量的開關量為主的開環(huán)的順序控制,它按照邏輯條件進行順序動作號按照時序動作;另外還有與順序、時序無關的按照邏輯關系進行連鎖保護動作的控制;以及大量的開關量、脈沖量、計時、計數器、模擬量的越限報警等狀態(tài)量為主的—離散量的數據采集監(jiān)視。由于這些控制和監(jiān)視的要求,使PLC發(fā)展成了取代繼電器線路和進行順序控制為主的產品。PLC廠家在原來CPU模板上提逐漸增加了各種通訊接口,現場總線技術及以太網技術也同步發(fā)展,使PLC的應用范圍越來越廣泛。 PLC具有穩(wěn)定可靠、價格便宜、功能齊全、應用靈活方便、操作維護方便的優(yōu)點,這是它能持久的占有市場的根本原因。
★福州鴻飛達自動化科技有限公司 ★
★聯系人:小程 ★
★Q Q :2851637109★
★電話:0591-83532940 手機:13788871663
★ 傳真:0591-88263940(注小程收)★
★郵箱:2851617309@qq.com★
★地址:福州倉山區(qū)陽歧路59號綜合樓4F★
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Heidenhain EXE702B702B
Heidenhain TNC355BE412BBE412
Heidenhain EXE602B/5-F
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Heidenhain EXE650BX50/8263380-20
Heidenhain AKLIP48AD-83301
Heidenhain 331665-01
Heidenhain 702B/D-8225/D-83301
Heidenhain 51002011QAN260L
Heidenhain ROD4263000-03S12-03
Heidenhain ROD420.0010238485-23
Heidenhain EXE610C-010-FACH