140ACO02000
140ACO02000
PLC以微處理器為核心,具有微機的許多特點,但它的工作方式卻與微機有很大不同。
微機一般采用等待命令的工作方式工作。
PLC是按集中輸入、集中輸出,周期性循環掃描的方式進行工作的。每一次循環掃描所用的時間稱為一個掃描周期。
對每個程序,CPU從*條指令開始執行,按順序逐條地執行指令做周期性的程序循環掃描,如果無跳轉指令,則從*條指令開始逐條順序執行用戶程序,直至結束又返回*條指令,如此周而復始不斷循環。
現貨,現貨,降降降,火火火,火火火……
現貨,現貨,降降降,火火火,火火火……
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BAYSIDE RB142-003-008 3:1 RATIO APPROX 7/8" SHAFT GEARH
INDUSTRIAL DEVICES 160V ELECTRIC CYLINDER NH-31-5B-4-MF
ENDRESS+HAUSER DB51A-AG31FB2/EE10 HYDROSTATIC PRESSURE
PARKER 350BAR HYDRAULIC PISTON PUMP PV016R1K1S1NPR1 *NE
TECUMSEH AK111AT-004-J7 HERMETIC COMPRESSOR, 1 HP, 115
STEARNS REV B 1-1/8" HUB HORIZONTAL MOUNTING MOTOR BREA
AIR/TAK 115/60/1V REFRIDGERATED AIR DRYER SRD-10-A01
RELIANCE ELECTRIC 5HP AC VARIABLE SPEED VS DRIVE 1AC200
NORGREN GL500 J1 M6 1 X5PT5 PS0C18 4, GRIPPER, 2" BORE,
SQUARE D 15000 PSIG CLASS 9012 PRESSURE SWITCH, GCW-2 S
PICK HEATERS 6X50-1 STEAM INJECTION LIQUID HEATER
STEARNS 1 087 021 000 56 SOLENOID ACTUATED SELF ADJ DIS
SOLA DT651H27S DRIVE ISOLATED TRANSFORMER, 27 kVa 3 Pha
FAFNIR 3MM208WI DUL SUPER PRECISION BEARING SET, NIB
TIMKEN 2MM9108WI DUM SUPER PRECISION BEARING, NIB
TIMKEN 2MM204WI DUM SUPER PRECISION BEARING, NIB
FAFNIR 3MM9109WI DUL SUPER PRECISION BEARING, NIB
TIMKEN 3MM911WE TUM SUPER PRECISION BEARING, NIB
NSK 7009A5TRSULP4Y SUPER PRECISION BEARING, NIB
TIMKEN 3MM9105WICR DUL SUPER PRECISION BEARING, NIB
NSK 7010CTRSUMP4Y SUPER PRECISION BEARING, NIB
FAFNIR 3MM9103WICR DUL SUPER PRECISION BEARING, NIB
TIMKEN 3MM9105WI DUM SUPER PRECISION BEARING, NIB
TIMKEN 2MM9105WI DUL SUPER PRECISION BEARING, NIB
SECURALL A130 30 Gal. CAPACITY SAFETY STORAGE CABINET
TIMKEN FAFNIR 3MM208WI DUL SUPER PRECISION BEARING SET,
TORRINGTON / FAFNIR 2MM9105WI DUM SUPER PRECISION BEARI
ALPHA WIRE F16022R 16 AWG TEFN 22/C 16.89 FEET MALE / F
SEW EURODRIVE KAF47AM56, HELICAL BEVEL GEAR, 24.06:1 RA