TU812V1
TU812V1
：祖巧丽
：
PLC可以进行自我诊断。当不同的故障发生的时候，CPU按照事件的优先程度不同而调用不同的错误组织块。在组织块内把故障信息用临时变量的方式，存储在其声明表内，运用监控软件，将故障信息采入画面里，就能够实现对PLC的工作状态进行监控。如若有任何一个模块发生故障，将会使得CPU停机。故而，下传错误组织块OB122非常重要。
上位机监控软件运用的是WINCC6.0，其是基于WINDOW对象链接以及嵌入，同时创建的开放式接口，能够让操作者在计算机屏幕中看到PLC的工业现场情况。在监控画面内可以实现以下的功能：
（1）控制操作：通过WINCC组态环境的画面定义喷吹的时间、周期以及卸灰的时间和周期，于中心控制室可以对相关设备实施在线控制，满足手自动控制方式的选择以及在线设置PLC的部分参数。上位机只是总线中的一个站点，它和PLC执行实时通迅。
（2）显示功能：按照工艺流程在用户窗口里设置电磁阀、风机、卸灰机、皮带、运行状态和故障显示灯等。在上位机中能够对现场设备予以实时监控，并且建立起图形对象和数据对象的对应关系，在画面中借助编程可以达到模拟显示除尘系统各阀门运行状况的效果。各个阀门的位置指示运用不同的颜色指示开位、关位以及正在开或是关等，还有现场仪表温度、压力以及状态参数等指标。
（3）数据管理：结合运行参数的变化情况以及重要程度，数据存储并且建立历史和实时的变化曲线，借助实时及历史的数据能够摸清任一时间系统的运行状态，了解到除尘管理的过程，以供统计分析的时候用。实时变化图显示的是目前时间信号的变化情况，可把这种变化绘制成图并进行记录。历史变化图能够利用打印机进行打印或者软盘进行备份，以便对生产工艺的变化或是事故予以分析。
（4）报警功能：如果某一个模拟量值超过一定范围或是出现异常的时候，能够按照不同的需要发出相应的报警。借助工艺流程图中相应的设备报警，并借助文字进行提示，显示出故障的位置，同时在事件表内记录这一故障，对快速确认故障，排除故障起到很好作用。
Newly listedESKOWATER FLOW METER VDK-3MG-DN
FORCE CONTROL 502-M2-MS-03 SERVICE PARTS KIT, NEW IN BAG
INGERSOLL-RAND / SOCATT PAD 77A-M825-7 *NEW*
BRADLEY PLASTIC EYEWASH BOWL DUST COVER S45-1964 *NEW*
BANNER 3FT RIGHT ANGLE SENSING END FIBER OPTIC CABLE ITA13S *NEW*
COSTGUARD 5 MICRON WATER FILTER CARTRIDGE CG5-20 *NEW*
WIDIA 1/4 BOT TAP 14024 *NEW*
WIDELL 1 7/8-12 H6 6FL S/S BOTTOM TAP
STANLEY A30LRA2-5 3/8" DRIVE ANGLE PNEUMATIC NUT RUNNER
FALK STEELFLEX FOR 50 & 1050T10 COVER GRID ASSEMBLY NIB
EAS 1/4" NPT FEMALE MONO COUPLER KBF6 *NEW*
STARCUT 1459758, GUNDRILL COOLANT, 13 7/8" OAL, 0.609", 5 1/2" SHANK, NIB
BELL & GOSSETT 3" X 4" CENTRIFUGAL PUMP SIZE 185016
APPLETON 1" ANGLE LIQUID TIGHT MALL IRON CONNECTOR ST-90100 *NEW LOT OF 3*
EATON 1/4"NPTM BRASS FITTING 68X6 *NEW LOT OF 10*
HARDING CS 001185001 FAN GRILL, LOT OF 2, NEW IN BAG
MORSE 2 1/2 - 4, TAP, NC, HS, GH-7, 6 FLUTE, 8 3/4" OVERALL LENGTH
OMRON E3C-S10 PHOTOELECTRIC SWITCH
YALE BACKCHECK SPRING ADJUSTMENT REVERSIBLE ALUMINUM DOOR CLOSER 3501 NEW
FESTO MINI PNEUMATIC CYLINDER AV-12-4
FALK 1.625" KW 3/8" X 3/16" COUPLING HUB, 1040T *NEW*
PHD CYLINDER ONLY BS10 1 X 20 -B-H4 NNB
FESTO MAINFOLD BLOCK FR-4-1/4C
WATTS FLUIDAIR 1/4" NPT INSERT KIT, IK20Y *NEW*
MOORE I/P CONVERTER 4-20MDAC 3-15PSI
TALEMA TOROIDAL POWER TRANSFORMER 8755-P2S2
DOOSAN WASHER TONGUE D917238 LOT OF 2 NEW
PARKER 3/8"NPT HYDRAULIC ROTARY ACTUATOR SERIES PS
BROWNING J50 S/C C/L CONNECTING CHAIN LINKS, LOT OF 2, NEW IN BAG
SLOAN A-15-A MOLDED DISC DIAPHRAGM FOR ROYAL & REGAL, LOT OF 5 NEW IN BAG SEALED
SMC 1/2" NPT MODULAR PIPING ADAPTOR E40T-04 *NEW IN BAG*
CARD 1-3/16-7 NS 4-FLUTE HAND TAP B-1
PARKER 4F-C4L-10-B CHECK VALVE, 1/4" NPT, 3000 PSI, NIB
EMECANIQUE ZCK J922H4 BODY CONTACT, NEW IN BAG
KAO 5.25" DOUBLE SIDED DOUBLE DENSITY DISKETTES MD2D *NEW LOT OF 10*
SKF EXPLORER BEARING 6205-2Z/C3 NIB
NIAGRA 1-1/2X3/4X1-5/8 2 FLUTE END MILL
SKF SNW 15X2-1/2" BEARING ADAPTER SLEEVE NIB SKF HE315
GREENFIELD 1 3/8-6, ROUND ADJUSTABLE DIE, NC, HS, 4 FLUTE, 3" OD, NIB
SALINA VORTEX CYLINDER DUC4.5X6-MG GRA05-F-S4-MG-W?S1-LL
3M 1" x 50YD, 80 GRADE, CLOTH UTILITY ROLL 051144-05110 *NEW*
FESTO 5-10 BAR CONTROL VALVE GR-1/8B0 151215 K008
HAGER 3.5" x 3.5", 1/2 M.S, FULL MORTISE-STD US 26D *NEW*
ECLIPSE 5/8" PIN DRIVE COUNTERBORE 413 6342
PARKER 250PSI, 2-PORT, 3/8"NPT FLOW CONTROL VALVE 3250G0319 *NEW*
LINCOLN DIVIDER VALVE UV-15S *NEW,SEALED*
CLEVELAND S62154 STYLE FORD SIZE 368 X 469 TAPER SHANK DRILL, 36YA-368 *NEW*
SATURN CIRCUIT BOARD CFUJK3-4 / SDB41024-2
PHD 1-3/8" X 3/4" PNEUMATIC CYLINDER 02942384-01 *NEW*
CLEVELAND 08686, SIZE 22 TAPER LENGTH DRILL, 5-3/4" OAL, HS, LOT OF 11, NEW
HALOGEN LEAK DETECTOR H25C-1N-6-N-E-P?S
HILTI 1" x 6" ANCHOR BOLT KB II 00045412 *NEW, LOT OF 3*
BRAD HARRISON 41360 MINI-CHANGE 5P FEMALE CORDSET, 6', NEW IN BAG
3M BLENDERM 1/2" x 5YD SURGICAL TAPE 1525-0 BOX OF 15
3M 7-1/8" FIBRE DISCS 983 CR *NEW, SEALED LOT OF 25*
UNION BUTTERFIELD 1/4X7, 4 FLUTE HAND TAP
DIXON 2-1/2" TO 5-1/2" RANGE, HOSE CAMPS HS-80 *LOT OF 10, NEW*
SMC 3/16" TUBE, 1/8"NPT FITTING KQU05-34S *NEW* LOT OF 10
WARNER 3/4" OPEN BALL BUSHING TWD-12 WRN *NEW*
BROWNING 7/8" BORE, SPLIT TAPERED BUSHING Q1 1 7/8 *NEW*
CM BIG ORANGE 2G804 1/8" WIRE ROPE CLIPS, LOT OF 5, NEW IN BAG
SANDVIK 2-1/2" STAINLESS STEEL CLAMP 76.1 / 9204 LOT OF 4
BRAD HARRISON 883030D01M003, 3P MALE/FEMALE CORDSET EXTENSION, NEW IN BAG
