SIS卡件 F6705

SIS卡件 F6705

PLC接通电源并开始运行后，立即开始进行自诊断，自诊断时间的长短随用户程序的长短而变化。自诊断通过后，CPU就对用户程序进行扫描。扫描从0000H地址所存的第一条用户程序开始，顺序进行，直到用户程序占有的后一个地址为止，形成一个扫描循环，周而复始。顺序扫描的工作方式简单直观，它简化了程序的设计，并为PLC的可靠运行提供了保证。一方面所扫描到的指令被执行后，其结果马上就可以被将要扫描到的指令所利用。另一方面还可以通过CPU设置扫描时间监视定时器来监视每次扫描是否超过规定的时间，从而避免由于CPU内部故障使程序执行进入循环而造成的故障。

ALLEN BRADLEY MINI-PLC-2/17 PROCESSOR MODULE 1772-LW/D F/W REV. C

MAXTOR 5/12V 500/750mA DESKTOP HARD DRIVE D740X-6L

FANUC ROBOTICS E-STOP CONTROL BOARD A20B-1006-0300/04C, NO BASE

ALLEN BRADLEY 12-24V FAST RESPONSE DC INPUT MODULE 1771-IT LOT OF 3

MITSUBISHI ELECTRIC MELSEC-Q INPUT/OUTPUT UNIT QH42P

OMRON 24VDC 250VAC 2A/ POINT OUTPUT UNIT C200H-0C222

INDRAMAT MT-CNC SERCOS INTERFACE MODULE APRB02-03-FW

ALLEN BRADLEY 12 BIT ANALOG INPUT EXPANDER MODULE 1771-E1C REPAIRED

NKC 120VAC CONTROL RELAY BOARD PCB DST 301 VER. 2.0 REV. A

ALLEN BRADLEY 120VAC FLEX I/O INPUT MODULE 1794-IAB SER. A

FANUC ROBOTICS 10 SLOT BASE UNIT ABU10A A03B-0819-C001

CONTRACTOR INSTRUMENTS 24VAC 24VDC 3AG 2.5A CIRCUIT BOARD PPS-1.0

FANUC ROBOTICS CRT CONTROL BOARD A20B-1003-0340/05C REPAIRED

CUTLER-HAMMER FREEDOM SERIES 2.15-3.49 HEATER PACK H2007B-3

GE FANUC ROBOTICS 12/24VDC OUTPUT MODULE IC693MDL741AA

SIEMENS SIMATIC CONNECTOR 6ES7 392-1AM00-0AA0 NNB

YASKAWA ELECTRIC CIRCUIT BOARD JANCD-MM14D REV B / DF8203830-B1

ALLEN BRADLEY 5.1VDC CONTROLLOGIX BATTERY MODULE,1756-BATM SER.A MISSING COVER

BANNER MULTI-BEAM 120VAC 2-WIRE AC POWER BLOCK MODULE 2PBA

ALLEN BRADLEY  PHOTOSWITCH 42GRC-9200

RELIANCE ELECTRIC ANAOLOG INPUT 2-CHANNEL CIRCUT BOARD REV 10 57C409

CROUSE-HINDS  CORDSET  5000110-28L

FANUC ROBOTICS OUTPUT MODULE A0A08E A03B-0807-C158 MISSING WIRING TERMINAL

ALLEN BRADLEY 0-265V AC/DC INTERFACE MODULE 1492-IFM20F LOT OF 2

FANUC ROBOTICS EMERGENCY BRAKE CONTROL PC BOARD A16B-1212-0540/06D BROKEN PLATIC

GORDOS  60VDC 3A I/O MODULE  OCD5Q-11

ANALOG DEVICES  ISOLATED VOLT INPUT  5B31-02

HONEYWELL  CIRCUIT BOARD  14502570-001

ALLEN BRADLEY Device Port 8-PORT JUNCTION BOX 1485P-P8N5-M5 SER. A

FANUC ANALOG OUTPUT MODULE A03-0807-C052 MISSING FACE PLATE AND DOOR

CHARMILLES TECHNOLOGIES CONTROL BOARD KCB-05G / 690.364.5