在PLC內(nèi)部存儲器中有專用于輸入狀態(tài)存儲的輸入繼電器區(qū)，各輸入設(shè)備（開關(guān)、按鈕、行程開關(guān)或傳感器信號）的狀態(tài)經(jīng)由輸入接口電路存儲在該區(qū)域內(nèi)，每個輸入繼電器可存儲一個輸入設(shè)備狀態(tài)。PLC中使用的"繼電器"并非實體繼電器，而是"軟繼電器"，可提供無數(shù)個常開、常閉觸點用于編程。每個"軟繼電器"僅對應(yīng)PLC存儲單元中的一位（bit），該位狀態(tài)為"1"，表示該"軟繼電器線圈"通電，則程序中所有該繼電器的觸點都動作。輸入繼電器作為PLC接收外部主令信號的器件，通過接線與外部輸入設(shè)備相聯(lián)系，其"線圈"狀態(tài)只能由外部輸入信號驅(qū)動。
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Euro Car Parts - The UK’s Largest Parts Distributor
Euro Car Parts - The UK’s Largest Parts Distributor
Euro Car Parts - The UK’s Largest Parts Distributor
ARMY ISSUE REFLECTIVE SET ~ HIGHWAY WARNING TRIAGLE ~ 9905-00-148-9544
ARMY ISSUE REFLECTIVE SET ~ HIGHWAY WARNING TRIAGLE ~ 9905-00-148-9544
9905-792 Woodward ProAct Governor Controller Model 9905-792 Used Tested Good
9905-792 Woodward ProAct Governor Controller Model 9905-792 Used Tested Good
9905-096 WOODWARD AUTOMATIC GENERATOR LOADING CONTROL--SA
9905-096 WOODWARD AUTOMATIC GENERATOR LOADING CONTROL--SA
9905-001 WOODWARD SPM-A SYNCHRONIZER--SA
9905-001 WOODWARD SPM-A SYNCHRONIZER--SA
8RA 002 016-121 HELLA Rear Reflector red
8RA 002 016-121 HELLA Rear Reflector red
{Brand New} Woodward 2301A Speed Control 9905-376
{Brand New} Woodward 2301A Speed Control 9905-376
Berger lahr WDPM3-314 WDPM3314 WDPM3-314.93210 SIG POSITEC
Berger Lahr WDPM3-314 WDPM3314 ALL TYPES AVAILABLE. WE SUPPLY ANY TYPE OF WDPM3
Berger Lahr SIG POSITEC WDPM3-314 REPAIR / WE FIX YOUR WDPM3 DRIVE
New Genuine WAI Starter Motor 17720R Top Quality 2yrs No Quibble Warranty
New Reliance Electric 812.53.00 D 24VDC Input Card
New Reliance Electric 812.56 Analog IN PCB Card 812.56.20
New Sealed Reliance Electric 812.53.00 D 24VDC Input Card
NEW, SIEMENS, RELIANCE ELECTRIC, 25-106-921-812, STARTERS & CONTACTORS. (6B-1)
Reliance 812.53.00BNS 24V DC PLC input module 812.53.00
Reliance 812.53.00D Card Input 8125300D 24 VDC
Reliance 812.53.00DUX Card Input 8125300DUX 24 VDC
Reliance 812.53.00DZW Card Input 24VDC 8125300DZW
Reliance 812.56.10FTZ Card 8125610FTZ
Reliance 812.5620FSX Card
Reliance 812.63.00DWW Card Output Contact
Reliance Electric 812.53.00 D 24VDC Input Card
Reliance Electric 812.53.00DTX Card Input 24 VDC 812.53.00
RELIANCE ELECTRIC 812.54.00 MERI INPUT 115 VAC MODULE
Reliance Electric 812.56. Analog IN Card 812.56.20.DQR
Reliance Electric 812.56.10CNN Analog Voltage Input Card 812.56.10
RELIANCE ELECTRIC 812.56.20 MERI ANALOG INPUT MODULE
Reliance Electric 812.6300DSx Card Output Contact 812.6300
reliance electric 812.68.00ayq
Reliance Electric Card Input 24 VDC 812.53.00DRX 812.53.00
Reliance Electric Electro Craft Servo Motor 6033-03-812
Reliance Electric Electro Craft Servo Motor 6033-03-812 w10:1
Reliance Electric Electro-Craft S-3016-N-H00AA Brushless Servo Motor 1 HP
Reliance Electric S-3007-N-H00AA Servo Motor Part# 6031-03-812 w/ Gearbox (CC4)
Reliance S61-E215-09 Input Board (Also shows part no. 812 660)
Zanussi ZOB1060X, ZOB660X, ZPB1260X Fan Oven COOKER ELEMENT 2000W 3 Turn
Zanussi ZOB1060X, ZOB660X, ZPB1260X Fan Oven COOKER ELEMENT 2000W 3 Turn
trutzschler ZPB3 9 495-12.430.000 AD 495-12.230.001 AE 495-12.230.002 AF CPU
TRUTZSCHLER ZPB 2 ZPB2 CIRCUIT BOARD CARD PLC MODULE 9 408-00.810.000 AG
TRUTZSCHLER ZPB 2 ZPB2 CIRCUIT BOARD CARD PLC MODULE 9 408-00.810.000 AG
TRUTZSCHLER ZPB 2 ZPB2 CIRCUIT BOARD 9 400-20.810.110 AE A-03-21-1 NEW
TRUTZSCHLER ZPB 2 ZPB2 CIRCUIT BOARD 9 400-20.810.110 AE A-03-21-1 NEW
Trutzschler ZPB 2 400-20.810.110AE
Trutzschler ZPB 2 400-20.810.110AE
TRUTZSCHLER TERMINAL CIRCUIT BOARD SPC-A3 490-81.230.000 AA 49081230000 AA
TRUTZSCHLER TERMINAL CIRCUIT BOARD SPC-A3 490-81.230.000 AA 49081230000 AA
TRUTZSCHLER TERMINAL CIRCUIT BOARD SPC-A3 490-81.230.000 49081230000
TRUTZSCHLER TERMINAL CIRCUIT BOARD SPC-A3 490-81.230.000 49081230000
Trutzschler SIB 3 (A1) Board ——#9
Trutzschler SIB 3 (A1) Board ——#9
TRUTZSCHLER RELAY SWG 3A SWG3A 9 490-87.335.000 949087335000
TRUTZSCHLER RELAY SWG 3A SWG3A 9 490-87.335.000 949087335000
Trutzschler Relay SWG 3A SWG 3 Type A 490-87.333.000 49087333000
Trutzschler Relay SWG 3A SWG 3 Type A 490-87.333.000 49087333000
Trutzschler Relay REL 3B 9 490-31.330.000 AA Used
Trutzschler Relay REL 3B 9 490-31.330.000 AA Used
Trutzschler RBT 3 494-18.330.000 Relay Output Module Circuit Board
Trutzschler RBT 3 494-18.330.000 Relay Output Module Circuit Board
TRUTZSCHLER PLC MODULE TMS CIRCUIT BOARD CARD NTK3 NTK-3 9 492-53.430.000
TRUTZSCHLER PLC MODULE TMS CIRCUIT BOARD CARD NTK3 NTK-3 9 492-53.430.000
TRUTZSCHLER NTK 3 492-53.430.000 PLC MODULE TMS CIRCUIT BOARD CARD NTK3
TRUTZSCHLER NTK 3 492-53.430.000 PLC MODULE TMS CIRCUIT BOARD CARD NTK3
trutzschler NOM 3 9 495-61.230.002 AA 495-61.330.000 495-61-210-001 relay board
trutzschler NOM 3 9 495-61.230.002 AA 495-61.330.000 495-61-210-001 relay board
Trutzschler MZE 3 9 492-38.430.000AA MZE3 MICROP. CENTRAL UNIT A-19-02-3 NEW
Trutzschler MZE 3 9 492-38.430.000AA MZE3 MICROP. CENTRAL UNIT A-19-02-3 NEW