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详细内容:大量的工程实践表明,PLC外部输入、输出设备的故障率远远高于PLC本身的故障率,而这些设备出现故障后,PLC一般不能觉察出来,可能使故障扩大,直至强电保护装置动作后才停机,有时甚至会造成设备和人身事故。停机后,查找故障也要花费很多时间。为了及时发现故障,在没有酿成事故之前使PLC自动停机和报警,也为了方便查找故障,提高维修效率,可用PLC程序实现故障的自诊断和自处理。 现代的PLC拥有大量的软件资源,如FX2N系列PLC有几千点辅助继电器、几百点定时器和计数器,有相当大的裕量,可以把这些资源利用起来,用于故障检测。 联系人:黄晓飞(销售工程师) 移动电话:18030263579 固话:0592-6895320 QQ:2472574325 全球疯狂低价甩卖 NEW GREAT LAKES BELTING QPH110WFBB FRICTION BRUSH BELT NIB ALLEN BRADLEY 700-HHF62Z12 FLANGE MOUNT POWER RELAY 1991 GEO PRIZM ELECTRICAL DIAGNOSIS SERVICE MANUAL ALLEN BRADLEY 700DC-F400 CONTACTOR 1998 P12 CHASSIS MOTORHOME SERVICE MANUAL VOL 1-3 1999 GEO METRO M-PLATFORM SERVICE MANAUL LOT OF 2 NIB NORTON 1601BFH TRI STYLE DOOR CLOSER 696 TROEMNER 8416T CALIBRATION WEIGHT SS ELECTRONIC BALANCE NIB TRICO 30052 OPTO-MATIC OILER PNEUMATICS NIB SQUARE D QOUR220 CIRCUIT BREAKER 20 AMP 2 POLE* SICK LUT1-440 OPTIC ELECTRONIC LUMIN SENSOR WITH LENS 1994 CHEVY LUMINA SILHOUETTE TRANS SPORT SERVICE MAN -2 CONTINENTAL SAFETY EQUIP CALIBRATION KIT NIB HORTON NEXEN 940001 PRESSURE REGULATOR NEW ASCO RED HAT 8223A21 SOLENOID VALVE 1/4 2NC* NIB SIEMENS 5SX2 220-5 CIRCUIT BREAKER 2 POLE 20 AMP* NIB SIEMENS 5SX2 225-5 CIRCUIT BREAKER 2 POLE 25A CONTINENTAL SAFETY EQUIP CALIBRATION KIT CONTINENTAL SAFETY EQUIP CALIBRATION KIT CONTINENTAL SAFETY EQUIP CALIBRATION KIT NIB ROPLAN 110-50 MOG 3000 RETAINER NIB ROPLAN 110-11 MOG 3000 STAT.SIC NEW PANDUIT PLT8EH-Q0 CABLE TIES WEATHER RESISTANT 25 NIB FURNAS 69GA6 PRESSURE SWITCH 2 POLE NIB TELEMECANIQUE XSD A600519H7 INDUCT PROXIMITY SWITCH NIB VICTOR MEDALIST TPR250-125-580-0781-9133 REGULATOR NIB ALLEN BRADLEY 700-HG47A4 CONTROL RELAY NIB ARROW F329-08 LP PARTICULATE FILTER 300 SCFM NIB PREST0-O-LITE ESAB R-36-400-580 INERT REGULATOR NEW GOULD ITE G203F RENEWAL CONTACTS KIT SIZE 4 3 POLES NIB SIEMENS 5SJ4 306-8HG41 CIRCUIT BREAKER 6AMP 3 POLE NEW GOULD ITE G203G RENEWAL CONTACTS KIT SIZE 5 NIP SIEMENS 8US1923-2AA01 BUSBAR HOLDER 600MM EX FIX* NEW SIEMENS 51PC5G3LB PILOT LIGHT TRANSFORMER 120 VOLTS NEW BRYANT BRD BR20-30 2 POLE TANDEM CIRCUIT BEAKER ZINSCO CN-54 MAGNETRIP CIRCUIT BREAKER 1 POLE 20 AMP NEW GE 24PSB MINIATURE INCANDESCENT LIGHT BULB 2W 24V 1999 CHEVY EXPRESS GMC SAVANA SERVICE MANUAL LOT VOL1-3 NEW GE PR2 SINGLE CONTACT LIGHT BULB 1 WATT 2.38 V* NEW THOMAS BETTS MOUNTING BASE PANEL MOUNT NIB SIEMENS MMSKF3 MANUAL SWITCH 2 POLE TOGGLE* NIB ACUITY CM4000 B/W CCD MINIATURE CAMERA 1992 PONTIAC GRAND AM SERVICE MANUALS LOT OF 2 NEW GE 85 MINIATURE LAMPLIGHT BULB 28V 0.04A* GTE SYLVANIA CIRCUIT BREAKER 2 POLE TANDEM BREAKER 30A 1998 CHEVY ASTRO GMC SAFARI SERVICE MANUAL VOL1-3 NEW GE 120PSB MINIATURE INCANDESCENT LIGHT BULB* 1998 CHEVY TRACKER SERVICE MANUAL VOLUME 1-3 ZINSCO TYPE Q 20 AMP 1 POLE CIRCUIT BREAKER 1999 CHEVY PRIZM SERVICE MANUAL VOLUME 1-2 1993 PONTIAC GRAND AM SERVICE MANUAL VOLUMES 1-2 1998 CHEVY GMC M/L VAN SERVICE MANUALS VOLUMES 1-3 NIP PANDUIT CFPE2WH MINI COM FACEPLATE LOT OF 2 WOMENS VINTAGE HALLOWEEN COSTUME DRESS SIZE SMALL MED WOMENS VINTAGE FEINER FASHIONS ROBE PAJAMAS SIZE L XL A16B-2200-020配件 A16B-2200-020配件 A16B-2200-020配件 WOMENS VINTAGE JC PENNEY GAYMADE ROBE PAJAMAS SZ L XL
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