6SN1123-1AA00-0KA1

6SN1123-1AA00-0KA1

6SN1123-1AA00-0KA1

6SN1123-1AA00-0KA1

6SN1123-1AA00-0KA1

6SN1123-1AA00-0KA1

輸入刷新--再運行用戶程序--再輸出刷新--再輸入刷新--再運行用戶程序--再輸出刷新……永不停止地循環反復地進行著。
圖1－1－1所示的流程圖反映的就是上述過程。它也反映了信息的時間關系。
有了上述過程，用PLC實現控制顯然是可能的。因為：有了輸入刷新，可把輸入電路監控得到的輸入信息存入PLC的輸入映射區；經運行用戶程序，輸出映射區將得到變換后的信息；再經輸出刷新，輸出鎖存器將反映輸出映射區的狀態，并通過輸出電路產生相應的輸出。又由于這個過程是永不停止地循環反復地進行著，所以，輸出總是反映輸入的變化的。只是響應的時間上，略有滯后。當然，這個滯后不宜太大，否則，所實現的控制不那么及時，也就失去控制的意義。 

SQUARE D 8538-SBG13-V06-A-P1 USPP 8538SBG13V06AP1

SQUARE D 8539-SCG45-V08 USPP 8539SCG45V08

SQUARE D Q4L3250 NSPP Q4L3250

SQUARE D CVM NSPP CVM

SQUARE D 52046-170-50 DATA ENTRY PANEL C1600 5204617050

Square D Size 3 catalog number 8536SEG1S with type 1 enclosure

SQUARE D 1218332825001 0001 TYPE 3R 5 & 12 ENCLOSURE CABINET

Square D Contactor Class 7004 600 Crane NEMA 6 MH03 DC parts unused! contact 

SQUARE D LAL36400 400A CIRCUIT BREAKER AL400LA LUGS NNB

Square D 10 KVA MP210S40F Single Phase Mini Power Zone Transformer (TRA2465)

NEW Square D Circuit Breaker EDB34080AABA w/alarm Switch & Auxiliary Switch

Square D 600 Amp NEMA 1 Non Fused Bus Plug (DIS1930)

USED SQUARE D COMBINATION MOTOR CONTROLLER 8539SEG41 NEMA 3 8536SE01 STARTER 

SQUARE D MODEL 8502SFO1V02S CONTACTOR 135A 600VAC NEW

Square D Circuit Breaker Cat# MAL36600 600 vac 600 amp

SQUARE D CIRCUIT BREAKER 3P 225 AMP 480V KC34225


150 Amp Square D Molded Case Circuit Breaker KC34150


Square D KAL362001021


SQUARE D SLAL3400 MAGNETIC CIRCUIT BREAKER
Returns: Accepted
H364AWKEI NEW SQUARE D FREE SHIPPING


SQUARE D JGL26200 USPP JGL26200

Square D HU-364AWK HU364AWK Safety Switch Series E1 200 Amp - New, No Box


Square D LA36250


Square D LA36400


SQUARE D 52011-395-50 NSFP 5201139550

SQD Square D LAP36400MB Circuit Breaker, Grey Label

SQD Square D LAL36400 Circuit Breaker, Grey Label

SQD Square D LAF36400 Circuit Breaker, Grey Label

SQUARE D QMB QMB3660 600 AMP 600V PANEL BOARD SWITCH


Square D Size 4 Contactor Class 8502 Type SFG 2 

Square D Size 4 Contactor Class 8536 Type SFO 1 


SQUARE D HU663AWK USPP HU663AWK

Square D 8997 EQ5110-SMB-1 8997EQ5110SMB1 Logic Module Series B - New, No Box


SQUARE D 9998SL11 3 POLE CONTACT KIT SERIES A SIZE 5 

KA36150 Square D 3p 600v 150a I-Line Breaker NEW IN BOX Circuit Breaker


Square D MAP36500 circuit breaker 500 amp 600 volt 3 pole TESTED-REPORT-WARRANTY

Square D Circuit Breaker MAL36700, 700 Amp #30123

Square D Circuit Breaker MAL36700 700 Amp #16004

14027 Parts Only, Square D 3112351450 Control Module Kit


SQUARE D JDA36150 NEW MLD CASE CIRCUIT BREAKER 150 AMP 3 POLE 240-600 VAC

SQUARE D JDA36175 NEW MLD CASE CIRCUIT BREAKER 175 AMP 3 POLE 240-600 VAC

SQUARE D JDA36200 NEW MLD CASE CIRCUIT BREAKER 200 AMP 3 POLE 240-600 VAC

SQUARE D JDA36225 NEW MLD CASE CIRCUIT BREAKER 225 AMP 3 POLE 240-600 VAC

Square D/Symax SCP-522

Square D Display Panel XBT F024510_XBTF024510_XBT FO2451O_ XBTFO2451O_24 V 35 W


NEW Telemecanique Square D ATV66D12N4 10 HP Drive


SQUARE D MAL36000 USPP MAL36000

SQUARE D 8538-SBG13V83CFF4P51T USPP 8538SBG13V83CFF4

IK36250 Breaker, 3 pole, 250 amp, 600 vac

SQUARE D 52011-435-50 USPP 5201143550

SQUARE D 8539-SCG43S8-V02S USPP 8539SCG43S8V02S

SQUARE D FCP34080MT 80A 480 VAC 3 POLE CIRCUIT BREAKER

SQUARE D 8803-P00C04F USPP 8803P00C04F

Spectrum Controls (Square D) 8000 RIO-244 I/O Module, Series F/Rev 1.30 (NIOP)

SQUARE D I-LINE CURRENT LIMITING CIRCUIT BREAKER 3P 200 AMP 600V IK36200


SQUARE D 200 AMP SWITCH HVMH-305200 

800 Amp Square D Molded Case Circuit Breaker MH 36800


Square D Mh Mh26600ac 2 pole 600 amp circuit Breaker 


Square D LHL36350 (LHL 36350) Circuit Breaker NEW

SQUARE D CIRCUIT BREAKER 3P 300 AMP 480V IL34300


Square D I Line HCM Panel Board Series E1 250 Amp With Main Breaker JDA36250 3R


USED Square D MH36300 300 amp I-Line Molded Case Circuit Breaker 600VAC


Square D LH36300 (LH 36300) I-Line Breaker TAKEOUT

Square D 700A Thermal-Mag Circuit Breaker MAL367006290

new Square D I-line Panel Panelboard mlo hcm 400 amp 600v 208 480 120 277volt

Square D LAM02120AC (LAM 02 120AC) Top Mount Electrical Operator *NEW*

Square D 1000A 1000 Amp I-Line 2 Busway AP2310G10ST AP2310G8 Busbar 3P3W 600V

SQUARE D CIRCUIT BREAKER FAL36020 *FACTORY SEALED* 


SQUARE D QMB QMB3260 600 AMP 240V FUSED FUSIBLE PANELBOARD SWITCH

SQUARE D 400 AMP 3 PHASE FUSIBLE 240 VOLT DISCONNECT 


SQUARE D I-LINE CIRCUIT BREAKER 300 AMP 600V 3 POLE LAB36300


SQUARE D I-LINE CIRCUIT BREAKER 800 AMPS TYPE# MH36800!


NEW SQUARE D H363DS STAINLESS STEEL SAFETY SWITCH FUSIBLE DISCONNECT 60 AMP 600V


SQUARE D NF PANELBOARD MLO 400 AMP 480V 3PH 4W

SQUARE D EHB EHB34100 3 POLE 100 AMP 480V CIRCUIT BREAKER USED


Square D 8536 combo motor starter, size 3, outdoor enclosure, 110v coil, 100amp

SQUARE D MA-3800-F USED 600A TYPE MA CIRCUIT BREAKER MA3800F

Square D LA36300 (LA 36300) I-Line Breaker- *NEW* 

SQUARE D DRY THREE PHASE DISTRIBUTION TRANSFORMER 

Square D 45 KVA 345T3HB 3 Phase Transformer (TRA2418)

Square D Company SORGEL Three Phase Insulated Transformer 30T12H 

SQUARE D CIRCUIT BREAKER 3P 150 AMP 600V KH36150


SQUARE D I-LINE CIRCUIT BREAKER 3P 250 AMP 600V LH36250


SQD Square D IF34030 Circuit Breaker, Black Face

Square D LX I-Line Breaker 100 Amp A LX36100 36100 100A

Square D 8903SX02 Lighting Contactor (STR1685)

1 SQUARE D KA-26250 CIRCUIT BREAKER N2-3


Square D Breaker 250 Amp LX36250 NICE!

SQUARE D LI36400 I-LINE CIRCUIT BREAKER 400 AMP 


Square D 400amp Breaker MHP36400MTV6175 Unused

SQUARE D MEC436 MEC436lsi 400 AMP micrologic BREAKER me mec


Square D SY/MAX ROM-121 Standard Analog Output Module