二、存儲(chǔ)器容量的預(yù)算 
    存儲(chǔ)器容量是可編程序操控器自身能供給的硬件存儲(chǔ)單元巨細(xì)，程序容量是存儲(chǔ)器中用戶運(yùn)用項(xiàng)目運(yùn)用的存儲(chǔ)單元的巨細(xì)，因此程序容量小于存儲(chǔ)器容量。規(guī)劃階段，因?yàn)橛脩暨\(yùn)用程序還未編制，因此，程序容量在規(guī)劃階段是不知道的，需在程序調(diào)試以后才知道。為了規(guī)劃選型時(shí)能對(duì)程序容量有必定預(yù)算，通常選用存儲(chǔ)器容量的預(yù)算來代替。
 
    存儲(chǔ)器內(nèi)存容量的預(yù)算沒有固定的公式，許多文獻(xiàn)材料中給出了不一樣公式，大體上都是按數(shù)字量I/O點(diǎn)數(shù)的10～15倍，加上模仿I/O點(diǎn)數(shù)的100倍，以此數(shù)為內(nèi)存的總字?jǐn)?shù)（16位為一個(gè)字），別的再按此數(shù)的25%思考余量。 
    三、操控功用的挑選
    該挑選包含運(yùn)算功用、操控功用、通訊功用、編程功用、確診功用和處理速度等特性的挑選。 
    (一)運(yùn)算功用 
    簡(jiǎn)略PLC的運(yùn)算功用包含邏輯運(yùn)算、計(jì)時(shí)和計(jì)數(shù)功用；通常PLC的運(yùn)算功用還包含數(shù)據(jù)移位、對(duì)比等運(yùn)算功用；較雜亂運(yùn)算功用有代數(shù)運(yùn)算、數(shù)據(jù)傳送等；大型PLC中還有模仿量的PID運(yùn)算和別的高檔運(yùn)算功用。跟著敞開體系的呈現(xiàn)，如今在PLC中都已具有通訊功用，有些商品具有與下位機(jī)的通訊，有些商品具有與同位機(jī)或上位機(jī)的通訊，有些商品還具有與工廠或企業(yè)網(wǎng)進(jìn)行數(shù)據(jù)通訊的功用。規(guī)劃選型時(shí)應(yīng)從實(shí)踐運(yùn)用的請(qǐng)求動(dòng)身，合理選用所需的運(yùn)算功用。大大都運(yùn)用場(chǎng)合，只需求邏輯運(yùn)算和計(jì)時(shí)計(jì)數(shù)功用，有些運(yùn)用需求數(shù)據(jù)傳送和對(duì)比，當(dāng)用于模仿量檢查和操控時(shí)，才運(yùn)用代數(shù)運(yùn)算，數(shù)值改換和PID運(yùn)算等。要顯現(xiàn)數(shù)據(jù)時(shí)需求譯碼和編碼等運(yùn)算。 

KEBA AR-181
KEBA CU312/E
KEBA CU313
KEBA CU313
KEBA CU313A
KEBA DI325
KEBA DI325
KEBA DI325
KEBA DO321
KEBA DO321
KEBA DO321
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KEBA EC100S
KEBA PS244
KEBA SI232
KEBA TT 081  02203-7614
KENSINGTON WFH4C
KEPCO 4882-27
KEPCO BOP20-20M
KEYENCE ML-P2
KIDDE FENWAL 12-E27121-020-05
KNIEL CP15.6311-052-02
KOGANEI CS4HB
MOTOROLA MVME5100
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MTL 2213
MYKROLIS FC-280SAV
NACHI BUY222
NAICH AUX111
NATIONAL INSTRUMENTS SCXI-1163R
NATIONALA MM-4M-R
Natural?MicroSystems?NMS CG6500C 8E1/8T1 背板
NEC 136-551733-B-02
NEC 136-551735-D-04
NEC 136-551973-A-01   1月26日
NEC 136-553623-A-01
NEC FC  9821X
NEC FC-9821X
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OLEC 64VB412V02
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OMRON C200HG PA204S
OMRON C200H-ID217
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OMRON C200HW-BC031
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OPTIMATE OP-620
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OXIDE 0020-31655
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PACIFIC SCIENTIFIC PC832-001-N
PACIFIC SCIENTIFIC T60-1001-C8-1A
PALCLEAN JD-BXG
PAPST TYP7114N/2
PARKER XPR10VT-4P3
PCCOOLER/超頻三 CPU風(fēng)扇
PELCO PA30-0065-00-A1
PHILIPS PR1613
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PHOENIX PLC-BSC-24DC/21
PHOENIX QUINT PS-100-240AC/24DC/10
PHOENIX QUINT-PS-100-240AC/10
PHOENIX QUINT-PS-100-240AC/24DC/10
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POLYSPEDE PRD2-200
POTTER&BRUMFIELD SDAS-01-7Y2S1024
POWER-ONE MAP55-1024
PROSOFT 1454-9F
PROSOFT 5601-RIO-MCM
Prosoft MVI56E-MCMR
PROSOFT MVI56-GSC
PROSOFT MVI69-PDPMV1
PROTECH SYSTEMS PBI-6SA
PRT PSA300R-81
PRT PSA300R-PFC
RADISYS EPC-16
RADISYS EPC-5 w/ EXM-13
RADISYS EXP-MX200
RELIANCE 0-51378-25
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RELIANCE 0-57510
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