CP40B P0961BC
CP40B P0961BC
CP40B P0961BC
可编程控制器的工作过程包括两部分:自诊断及通信响应的固定过程和用户程序执行过程,如图5-1所示。PLC在每次执行用户程序之前,都先执行故障自诊断程序、复位、监视、定时等内部固定程序,若自诊断正常,继续向下扫描,然后PLC检查是否有与编程器、计算机等的通信请求。如果有与计算机等的通信请求,则进行相应处理。当PLC处于停止(STOP)状态时,只循环进行前两个过程。而在PLC处于运行(RUN)状态时,PLC从内部处理、通信操作、输入扫描、执行用户程序、输出刷新五个工作阶段循环工作。每完成一次以上五个阶段所需要的时间称为一个扫描周期。
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厦门泰尼电气有限公司
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SAFTRONICS 80 AMP SOLID STATE STARTER SY6-80BP
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SKF 7220 BECBY BEARING
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MICRO MEMORY MICRO MEMORY MM-6500 BOARD MM6500
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BIDDLE MAJOR MEGGER TESTER 21159 SERIES 1567042
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HONEYWELL MICROPROCESSOR/MEMORY BOARD ASSEMBLY 30735818
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EDWA*** GENERAL SIGNAL 5525-AH AUDIBLE SIGNAL FOR H
SQUARE D 600 AMP CIRCUIT PROTECTOR MAF3660025M1212 AUX.
METRIC INJECTION MOLDING END CAP C-26 M66 9615
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*** CCD XC-75 CAMERA W/ TV ZOOM LENS 1:14/12-72 LENS
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PRO-FACE GPH70-S***1-24V OPERATOR INTERFACE PANEL
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CROSBY PRESSURE RELIEF VALVE 1 E 2 JOS-E 25 J 150 PSI
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BRUNSWICK SCIENTIFIC CPU MODULE ADVANTEC PCM 9562N
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ASHCROFT 101175 PRESSURE GAUGE DIAPHRAGM SEAL KIT ASHCR
JOHNSON CONTROLS METASYS AS-XFR100-0 CONTROLLER
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DYNAPAR ENCODER HS20204881437
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SQUARE D 250 AMP MAG-GARD CIRCUIT BREAKER KHP3625029M
CARLSON POWERFLO 625CAB-CC B-33782 PNEUMATIC BRAKE
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RELIANCE 5 HP ELECTRIC MOTOR 230/460 VAC 184T FRAME 3 P
ASHCROFT TEMPERATURE SWITCH 480 VAC 15 AMPS 0-100°F
ROYAL PRODUCTS FILTERMIST COMPLETE FILTER ELEMENT 2
MAGNETEK 1 HP DC ELECTRIC MOTOR 56C FRAME 1750 RPM
OMRON ROTARY POSITIONER H8PR-16
AO ***ITH 1/2 HP DC MOTOR 90 VDC 1725 RPM 56C FRAME
HAWS 7720 EYE / FACE WASH STATION PEDESTAL MOUNTED
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20:1 RATIO GEAR REDUCER
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VERSA VALVE VPP-4302
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