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處理速度與用戶程序的長度、CPU處理速度、軟件質(zhì)量等有關(guān)。如今，PLC接點(diǎn)的呼應(yīng)快、速度高，每條二進(jìn)制指令履行時刻約0.2～0.4Ls，因此能習(xí)慣操控請求高、相應(yīng)請求快的運(yùn)用需求。掃描周期（處理器掃描周期）應(yīng)滿意：小型PLC的掃描時刻不大于0.5ms/K；大中型PLC的掃描時刻不大于0.2ms/K。
四、機(jī)型的挑選
    (一)PLC的類型
    PLC按構(gòu)造分為全體型和模塊型兩類，按運(yùn)用環(huán)境分為現(xiàn)場裝置和操控室裝置兩類；按CPU字長分為1位、4位、8位、16位、32位、64位等。從運(yùn)用視點(diǎn)動身，通?？砂床倏毓τ没蜉斎胼敵鳇c(diǎn)數(shù)選型。 
    全體型PLC的I/O點(diǎn)數(shù)固定，因此用戶挑選的地步較小，用于小型操控體系；模塊型PLC供給多種I/O卡件或插卡，因此用戶可較合理地挑選和裝備操控體系的I/O點(diǎn)數(shù)，功用拓展便利靈敏，通常用于大中型操控體系。
    (二)輸入輸出模塊的挑選
    輸入輸出模塊的挑選應(yīng)思考與運(yùn)用請求的共同。例如對輸入模塊，應(yīng)思考信號電平、信號傳輸間隔、信號阻隔、信號供電辦法等運(yùn)用請求。對輸出模塊，應(yīng)思考選用的輸出模塊類型，通常繼電器輸出模塊具有報價低、運(yùn)用電壓規(guī)劃廣、壽數(shù)短、呼應(yīng)時刻較長等特色；可控硅輸出模塊適用于開關(guān)頻頻，電理性低功率因數(shù)負(fù)荷場合，但報價較貴，過載才干較差。輸出模塊還有直流輸出、溝通輸出和模仿量輸出等，與運(yùn)用請求應(yīng)共同。 

KEBA AR-181
KEBA CU312/E
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KEBA TT 081  02203-7614
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KEPCO 4882-27
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MOTOROLA MVME5100
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MTL 2213
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NAICH AUX111
NATIONAL INSTRUMENTS SCXI-1163R
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NEC 136-551733-B-02
NEC 136-551735-D-04
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NEC 136-553623-A-01
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NMS CG6060/32-4TE1
NOVELLUS 02-113640-00
OBERG INDUSTRIES F-DMDM-PM-110E
OKUMA ER-FC-2048D
OLEC 64VB412V02
OLYMPUS OTV-S7H-NA-12E
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OTHER/其他 白棉
oxboro E69F-BI2-MS
OXIDE 0020-31655
PACFFFC PC832-001-T
PACIFIC SCIENTIFIC PC832-001-N
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PHILIPS PR1613
PHOENIX FLMC10BASE-T/FO G850
PHOENIX HDFK4
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PHOENIX PLC-BSC-24DC/21
PHOENIX QUINT PS-100-240AC/24DC/10
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PHOENIX QUINT-PS-100-240AC/24DC/10
PHOENIX ST-SI-UK4
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PHOENIX UT 4-MTD
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PILLAR INDUSTRIES AB7006-1
PILZ P1U-1NB
PILZ PZE3 V22 24VDC
PIONEER MAGNETICS PM1253AL-6-3-Z03
POLYSPEDE PRD2-200
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POWER-ONE MAP55-1024
PROSOFT 1454-9F
PROSOFT 5601-RIO-MCM
Prosoft MVI56E-MCMR
PROSOFT MVI56-GSC
PROSOFT MVI69-PDPMV1
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PRT PSA300R-81
PRT PSA300R-PFC
RADISYS EPC-16
RADISYS EPC-5 w/ EXM-13
RADISYS EXP-MX200
RELIANCE 0-51378-25
RELIANCE 0-56966-2
RELIANCE 0-57510
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RELIANCE 0-57C402-C
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