PLC的存儲(chǔ)器分為系統(tǒng)程序存儲(chǔ)器和用戶(hù)程序存儲(chǔ)器。系統(tǒng)程序相當(dāng)于個(gè)人計(jì)算機(jī)的操作系統(tǒng),它使PLC具有基本的智能,能夠完成PLC設(shè)計(jì)者規(guī)定的各種工作。系統(tǒng)程序由PLC生產(chǎn)廠家設(shè)計(jì)并固化在ROM內(nèi),用戶(hù)不能直接讀取。PLC的用戶(hù)程序由用戶(hù)設(shè)計(jì),它決定了PLC的輸入信號(hào)與輸出信號(hào)之間的具體關(guān)系。用戶(hù)程序存儲(chǔ)器的容量一般以字(每個(gè)字由16位二進(jìn)制數(shù)組成)為單位,三菱的FX系列PLC將用戶(hù)程序存儲(chǔ)器的單位稱(chēng)為步(Step,即字)。小型PLC的用戶(hù)程序存儲(chǔ)器容量在lK字左右,大型PLC的用戶(hù)程序存儲(chǔ)器容量可達(dá)數(shù)M(兆)字。
ALLEN BRADLEY 20B D 5P0 A 0 AYNANA0 POWERFLEX 700 DRIVE
ALLEN BRADLEY 20BD011A0AYNANA0 POWERFLEX 700 DRIVE
CASI-RUSCO M/5 PXN CONTROLLER W/ ETHERNET CARD & BOARDS
CONTROL TECHNIQUES EMERSON VBE 150-R FLUX VECTOR DRIVE
EMERSON CONTROL TECHNIQUES VB150 ICD FLUX VECTOR DRIVE
LEISTER CH-6056 HIGH PRESSURE BLOWER
SIEMENS ABB 1FK60636AF711TG0 3PH PERMANENT MAGNET MOTOR
CONTROL TECHNIQUES VBE150 ICD FLUX VECTOR DRIVE
LIEBERT SYSTEM 3 OPERATOR INTERFACE PANEL
LIEBERT S-6200 SYSTEM 3 OPERATOR INTERFACE PANEL
TOSHIBA YWM0429*A PX12-44150 MXIF BOARD
TOSHIBA YWM0419*A PX12-44252 MSEQ BOARD
TOSHIBA YWA3466*A PX12-44265 BOARD