G1L012M0原装进口

C(代表客户，下同)：我用FB58做PID，每次下载后都有一个80.0的设定值，并且系统切换在自动，温度都调节在80℃，我想下载后系统在手动，并且初值为0.0，怎么能改回来呀？ 

E（代表工程师，下同）：请问您FB58的SP_INT和MAN_ON引脚填的什么变量？ 

C：没有填变量，我是直接通过触摸屏连接FB58背景块的IN_OUT类型的SP_INT和MAN_ON变量？ 

E：心理活动：可能是地址冲突或者没有COM_RST造成的。 

E：那您程序其他地方有用到这些变量吗？ 

C：没有，我跟PID相关的控制都没有连锁，只需要触摸屏给一个设定值和手自动切换即可。 

E：那您一共调用几路FB58？ 

C：4路，但是只有第二、三两路有这个问题，其他两路都正常。 

E：那您每一路都分配独立的背景块了吗？ 

C：分配了，都是不同的DB块号。并且我刚才将COM_RST置位，把块初始化了系统也不会切换为手动。开始我怀疑自己程序内其他地方给第二路背景块写值，但是如果我通过面板修改设定值和手自动状态后，这两个值都不会出错，并且交叉索引也查不到地址冲突的地方，所以这个问题应该和程序关系不大。 

E：心理活动：挺奇怪的问题，应该是客户调试过程中改变了某个参数造成的，初始化数据块应该能解决这个问题。 

E：我觉得您离线的DB块的实际值被改过，您方便打开一个背景块并切换到数据视图吗？ 

C：打开了，已经切换到了数据视图。 

E：您IN_OUT类型的SP_INT和MAN_ON变量实际值是多少？ 

C：SP_INT是80.0；MAN_ON是FALSE。 

E：初始值呢？ 

C：SP_INT是0.0；MAN_ON是TURE。 

E：那您的问题是您改变了离线DB块的实际值造成的，您将背景块初始化一下，然后保存下载就能解决这个问题。 

C：稍等，我试下。 

三分钟后...... 

C：下载完了，问题解决了。我并没有改过这个实际值的操作，但是我的实际值为什么被修改了呢？ 

E：您手动修改、上载或者复制在线DB块到离线都有可能改变离线实际值。 

C：我都没有呀。我只是用背景块的参数分配视图，运行了次自整定，其他我没进行过任何操作，是不是FB58自整定后能自动保存呀？ 

E：没有这个功能呀？手册里面也没提到。 

C：那就奇怪了，我真的没有进行过你说的操作。不管怎么样，问题解决了我很感谢您。 

         挂了客户的电话，我也很奇怪客户的问题。一般来说造成离线DB块实际值改变的方法有手动修改、上载或者复制在线DB块到离线，见图1、2.3。 

图1：手动修改离线项目初始值 

图2：将在线项目DB块复制（拖拽）到离线项目 

图3：上载项目 

客户否认了这三种方法，难道FB58有这个特殊功能没被发现。我决定进行测试，看能否找到客户问题的原因。FB58调试面板内跟SP_INT相关的功能只有Commissioning，所以对其进行测试，见图4、5。 

图4：调出FB58背景块的Commissioning窗口 

图5：通过Commissioning窗口给FB58背景块分配参数 

分配参数后检查FB58的离线数据块，但是离线DB的实际值没有改变。客户说用向导自整定后出现这问题，按手册的描述，自整定是不会改变离线项目实际值的，是不是客户中间出现了什么错误操作。我重新进行一次自整定测试该问题步骤见图6、7、8、9、10、11。 

图6：打开背景块，点在线按钮 

图7：点Yes进入在线DB块 

图8：启动自整定 

图9：使用设定值阶跃变化，通过逼近工作点来实现整定 

图10：完成自整定，关闭向导 

图11：保存参数，关闭DB块，退出编辑器 

退出编辑器后发现，离线DB块的初始值变化了，变成了设定的工作点，见图：12。难道FB58真有这样的功能，重新仔细查阅手册，里面并没有关于此功能的描述，我重新做了一遍实验，结果依旧如此。如果FB58有这样的功能，手册里面至少应该提到呀，中英文手册没提，肯定是我那个地方没留意。为了跟此次实验作对照我将DB块初始化后重新使用变量表进行一次使用设定值阶跃变化，通过逼近工作点来实现整定。见图13、14。 

图12：通过向导自整定后离线DB块的实际值被改变 

图13：使能TUN_ON后给定设定值，启动自整定 

图14：自整定完成，系统自动投入自动 

自整定完成后，我打开背景块查看离线初始值，初始值并没有改变结果见图15。 

图15：通过状态表自整定后离线DB块的实际值被改变 

对比两次实验结果可以看出，自整定不会改变离线DB块的实际值，离线实际值的改变跟自整定没有关系。离线实际值的改变发生在图10、图11的步骤中，位了确定具体的原因我做了实验对照。 

初始化DB块后，下载，在线，通过变量表修改SP_INT，然后关闭DB块。见图16、17。 

图16：更改背景块的在线实际值 

图17：离线实际值未被改变 

2〉初始化DB块后，下载，在线，通过变量表修改SP_INT，保存DB块，然后关闭DB块。见图18、19、20。 

图18：更改背景块的在线实际值 

图19：修改在线实际值后点保存按钮 

图20：离线实际值被改变 

由以上对比试验可知：改变离线DB块初始值发生在图19的步骤中，即当在线打开DB块后，点保存按钮的作用是将在线DB块的实际值保存到离线项目DB块的实际值内。查看帮助和手册找该问题的根源见图，帮助里没有明确指出保存到离线项目见图21。 

图21：在线打开DB块内的保存按钮的帮助信息 

手册内对此有明确的描述，激活在线DB块以后，如果点保存按钮，则可将在线值保存到离线项目，见图22。 

图22：手册内关于为将块保存在编程设备的描述 

手册里面介绍了如何将在线数据保存到在线的项目的方法，那么保存到离线项目的值是激活时的值呢，还是点保存时的值呢？对此，我做了验证试验见图23、24、25、26。 

图23：在在线实际是值为80.0时激活DB块 

图24：激活DB块后将初始值改为99.99 

图25：点击保存按钮，保存参数到离线项目 

 图26：切换到离线项目，查看保存的结果

可见客户激活在线DB块后，点击保存按钮，可将激活DB块时的实际值保存到离线项目。至此，客户出现问题的过程基本还原，打电话和客户验证，客户就是因为整定后点了保存按钮，才导致将在线值保存到离线项目的。真是一招走错，全盘皆输呀，一个很不起眼的小步骤没注意，造成很大的麻烦。 

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Barber Colman 81ZZ-01100-E51-0-00 Positioning Module Maco 8000 - 

Thomson Industries TM94-DAD Circuit Board REV. B - 

Power One 24Q2540-2R DC-DC Converter 24Q25402R - New No Box

Part 25-98101008 Circuit Board 88100SB033 - 

Allen Bradley 960100 Circuit Board 960100-9002 - 

Allen Bradley 712-CAB26 Combination Starter - New No Box

Fanuc A20B-2900-0860/02A Daughter Board A20B29000860 - New No Box

Hedland 734609 Flowmeter

Boston Gear F726-50-B5-G Gear Reducer F72650B5G - New No Box

Allen Bradley 9467736 Circuit Board - 

Dolan Jenner PWA-01-022004-0000 Board PWA010220040000 - New No Box

Eaton 42-13820-03 Cutler Hammer Acceleration Board 42-13820-00 CAB 421382003 F11

BEI Industrial Encoder 924-01072-141 BEI Industrial Encoder - New No Box

TRI Sigma 21808600 Bus Exchange Module With Side Pins - 

Part 91195A Circuit Board 91196-01 Z234054 - 

Mindel 13-0002 Circuit Board 130002 - 

Part W81589365-0101A Circuit Board W815893650101A - 

Alfa Laval 761TR-30W-20S-1-1/2-316L Sanitary Valve - 

Part 48D40001 Circuit Board 30D40000 - New No Box

Allen Bradley 1756-M12 Unit With 1756-L55 - Refurbished

Texas Instruments ASSY2497435 CMOS Board - 

Eaton 42-13820-03 Cutler Hammer Acceleration Board 42-13820-00 CAB 421382003

Yaskawa CACR-SRCA 44DZS-Y38 Servo Board DF8202517 Rev B04 Rev B04 - 

Honeywell 620-0026 Memory Module 4K 6200026

General Electric LCPFH-F2 Lighting (Pack of 10) - New No Box

Bailey GM9-0382-002-0001 PC Board IMFEC12

ABB 3BSE008516R1 Analog Input Module Type A1810

Basler Electric 9289901106 Digital Board - 

TRW/Globe 3A1678 Direct Current Motor Rev D 1760-304 Rev E - 

TRW/Globe 3A1678 Direct Current Motor Rev C 1760-304 Rev E - 

TRW/Globe 3A1678 Direct Current Motor Rev D 1760-304 Rev C - 

TRW/Globe 3A1678 Direct Current Motor Rev G 1760-304 Rev G - 

TRW/Globe 3A1678 Direct Current Motor Rev F 1760-304 Rev F - 

Fanuc A20B-2100-0542 Control Board A20B-2100-0542/04B - 

Jauch H30SREI Circuit Board IGB1014

Unico 311-955.1 9942 31195519942 PC Board - New No Box

Allen Bradley 1746-NI8 SLC 500 Input Module 1746NI8

Fanuc A20B-2101-0890 PC Board A20B-2101-0890/08C - 

Fanuc A20B-2100-0252 Circuit Board A20B-2100-0252/04B - 

Fanuc A20B-2100-0252 Circuit Board A20B-2100-0252/06C - 

Balluff BLT 21M-001-P-S4 Photoelectric Emitter

Lorain 4864-691 Circuit Board 4864691 - 

Heidenhain 319 102-0E Encoder Rod - 

Namco EE230-24720 Cylindicator Probe EE230-24720

Wirtz Mfg. D190152-0 Circuit Board - 

UC Components C-806-NA Non Vented Screw C806NA (Pack of 113)

Armstrong CS-301 Gasket 3-7/8X1-5/8 (Pack of 24) - New No Box

General Electric GEM250ML5AC3-5 Ballast (Pack of 10)

Sandvik Coromant 88037 [MC] 431-330132L9-1 3Y019785 (Pack of 6)

Potter & Brumfield W93X11-2-20 Circuit Breaker (Pack of 6)

Allen Bradley 1746-OA16 Module 1746-0A16 Series B (Pack of 6)

Allen Bradley 4110605 -03 Circuit Board - 

Honeywell PUL4024S Controller

GV Warren FS-3102 Air Flow Sensing Switch FS3102 - 

Fanuc A20B-2902-0374/01A Daughter Board A20B2902037401A - New No Box

Parker 80CN2 20Q M2 25 Y9Y9 1 98 Filter 80CN220QM225Y9Y9 1 98

UC Components C-2064-SVA Screw C2064SVA (Pack of 46)

Nvidia FX 4800C Quadro P607

Signal Division EM3 Selectone Extension Series B

Schneider TSX RAM 16 8 TSXRAM168 Ram Cartridge 16K Bytes - 

Knoop 5856 Diamond Indenter W/Holder

Knoop 8098 Diamond Indenter

Knoop 9028 Diamond indenter

Knoop 10290 Diamond Indenter

Square D 9012-GAW-5 Pressure Switch 9012GAW5 Series C (Pack of 3)

Numatics 152SS500M000061 Valve (Pack of 3)

General Electric CR2810A14AC4 Relay (Pack of 3)

Square D PQ3606GRA Busway Unit

Baldor 07H06W332G1 Motor 2.5 HP 1120 RPM Frame 213Z

Allen Bradley 1771-P7 120/220V Power Supply Module With Cable

Dodge 311121 Flexidyne Flow Charge

Turck MK13-33EX0-R/115VAC Amplifier Module MK1333EX0R115 (Pack of 6)

Double A QF-5M-FF-10A2 QF5MFF10A2 Directional Valve

Bussmann JP600303CORA Buss JP60030-3CORA Fuse Block (Pack of 10) - New No Box

General Electric 44A398788-G03 Circuit Board - 

Square D 8881 PSM-1 Processor Power Supply Module Ser A - 

Telemecanique TSX-DMF-401 Expander Module TSX-171-020 (Pack of 3)

Allen Bradley 1771-OAD/C Module 1771-0AD/C (Pack of 3) - New No Box

Allen Bradley 100-C30ZJ00 Contactor 100C30Z00 (Pack of 3)

General Electric IC630MDL311A Input Module (Pack of 3) - New No Box

Numatics C21E-03AI Filter 3/8" NPT C21E03AI (Pack of 3) - New No Box

Allen Bradley 1771-IA Module 1771-1A Quanity (Pack of 3) - New No Box

Scientific Technologies P41-B2-AC1 Controller For Light Cutain P41B2AC1 C

Staco Energy 3PN1510 Variable Autotransformer 0-120/240V 15A 2.1kA - New No Box

Rexroth Bosch R900218884 Valve M-3SED10UK13/350CG96N9K4 - New No Box

Haas-Laser 18-07-25-AH 180725AH Circuit Board V1.0 - 

Part 387540-6023 Circuit Board - 

Unico 311-451.3 Drive PAK 311-451 - 

MTS TTSRCU0435 MTS LDT Position Sensing System

Ross 1988H77 Spacer Kit (Pack of 3)

Diamond Automation 1267960228 PC Board

JBL Systems DD2GB100-3 DD2GB1003 Gage Sensor Kit

SMC PF2W54000N2X502 Flow Switch

General Electric IS215ISBBH2A ISBB Splitter - With Bottom Clip - 

Allen Bradley 1775-MR8 CMOS RAM Memory 975066-01 With Battery - 

Dings Co H080177-2 H0801772 Magnet Coil Assembly (Pack of 3) - New No Box

Fujitsu Limited N860-3011-T002 N8603011T002 Keyboard (Pack of 3)

Allen Bradley X-241563 Current Transformer X241563 (Pack of 3) - 

STI 42732-0480 STI 427320480 Micro Safe Transmitter Sender

ABB 1SCA022352R6870 Disconnect Switch OT32ET3 (Pack of 10)

Texas Instruments 6MT12-40AL Module (Pack of 10) - 

UC Components C-1832-A Screw 5/16-182 (Pack of 60)

ESAB 2075159 Wire Feeder MIG-28A - New No Box

Igus CF211-05-05-02 Chainflex Cable 200 Feet

Danaher Controls HZ42A6 Counter Mircoflex - Refurbished

Ross 887G79 Monitor Lockout

Joslyn Clark 5U4-76 PM Control Relay 5U476 (Pack of 3)

PHD GRM2SS-2-75DCS-75DDS-LBB -B08 Clamp Sensor GRM2SS275DCS75DDSLBBB08

AC Autotech MS 650 PL-FB MS650PLFB Motion Detector

Part 86212801 Circuit Board 15422800 Rev 3 - 

Sommer GP420NC-B/04 GP420NCB04 Valve

Waukee LPX-5 Flo-Meter 3-001-R16

ISB MX-2 MX2 Pc Board With Transformer And Multi Parts

Allen Bradley 609T-AAW21 Reversing Manual Starter

Allen Bradley 802M-AY12 Limit Switch 802MAY12 Series F (Pack of 3)

Trane VAL01090 Valve Disc

Hoffman A-8066CH Enclosure A8066CH Missing Counter & Relay

ABB SK 418 038-A Auxiliary Interlock SK418038A (Pack of 10)

Siemens 243-0024 Reversing Relay 2430024 (Pack of 10)

General Electric IC600YB915A Axis Positioning Module - 

EGS Electrical CE1500MH Transformer HEVI DUTY SOLA

Mueller F-27955 Valve F27955 (Pack of 3)

TRI Sigma 21808600 Bus Exchange Module No Pins - 

TRI Sigma 21808600 Bus Exchange Module W/Pins-Missing Plug - 

Kepco PWR 15-6C Power Supply - 

Fanuc A05B-2400-C061 4 Slot Backplane A05B2400C061

Joslyn Clark 5UUH64-76 PMAL Latching Relay

Heidenhain 376 886-0G Encoder

Allen Bradley 1746-A2 Slot Rack 1746A2 With 1747-L40L

Johnson Controls NU-BAT-101-0 Metasys Module NUBAT1010 Rev. F (Pack of 3) - 

FINCOR ACX2015 Drive Model 6333 24-480-1034 012063 - New No Box

Hoffman 20010-C001 LCI Smart Hopper

Allen Bradley 1770-FAC 1770FAC Keyboard Module Series A - 

Festo AVL-12-10 Pneumatic Cylinder AVL1210 (Pack of 6)

Telemecanique XCSL764B3CA Interlock Switch XCS-L

Allen Bradley 1770-KF2 Interface Module 1770KF2 Series C

Telemotive E7207-11 E720711 Circuit Board

Autotech E5N-B8192-8TPRE E5NB81928TPRE Digisolver

TR Electronic Encoders 110-02207 Encoder

Lenze 8201LP PC Board - 

TRI Sigma 21407500 Resistor - New No Box

Part 12351-1001 Pump BRG 123511001 - 

ABB GNT 70 48 141 P2 Transformer GNT7048141P2 - New No Box

Siemens 3UF7510-1AA00-0 Ground Fault Module (Pack of 3) - New No Box

Rose/MSA 506202 Retractable Lifeline (Pack of 3) - Refurbished

Okuma 7000L-S CE 7000LSCE OSP Machine Panel Panel Only - 

Static Controls 1305-MM 1305MM Circuit Board

ABB S202UK 6A Circuit Breaker S202UK6A (Pack of 10)

Fanuc A20B-1007-0090 Circuit Board W/2 Wire Connector - 

Part F950 Sprinkler Head 165F 74C 1/2" Bronze (Pack of 36) - New No Box

General Electric CR174DB P3 E5B Photoelectric Sensor (Pack of 3) - New No Box

Sick Optic KT5LP3611S01 Sick Contrast Sensor KT5L-P3611S01

Mitsubishi A1SY41 Output Unit (Pack of 3) - New No Box

General Electric CR245G210A Logic Element (Pack of 3) - New No Box

Namco EB551-71784 Coil EB55171784 (Pack of 3)

Gould A60C125 121T1 Amp Trap Fuse 125 Amps (Pack of 3) - New No Box

Protection Controls P-C II UV Scanner 491S (Pack of 3)

G W Lisk K12-158-109 Coil Racine Orange Wires (Pack of 3)

Kollmorgen TT-4500-1010-B TT45001010B Inland Motor

General Electric V/099-900102 Auxiliary Contact Circuit Breaker (Pack of 36)

Gemco 1989-0-115-A-S Solid State Triac Module 1989-O-115-A-S

Kracht KF1/16D10KP0A 0DE1 Transfer Gear Pump D-58791 - Refurbished

Gemco 1989-0-115-A-S Solid State Triac Module 1989-O-115-A-S 002 - 

Digital E106 5015682 B1 E1065015682 Board 5542-06 07484

Wynmotor D94 (Pack of 10) - New No Box

Allen Bradley 5120-P1 A Power Supply 96045275

Falk 1080-T10 Coupling 1080T10 0776207

Allen Bradley 1771-OA Module 1771-0A Series B

Fanuc A20B-1007-0090 Circuit Board A20B-1007-0090/01A AA - 

HP 106113801MOD-A Reversing Board - 

I.C.S. AT-1094 Circuit Board - 

Telemotive E7110-1 Circuit Board E71101

Vickers 879279 Valve DG4S4012AUB60

Part 459221-0311 Circuit Board - 

Fanuc A660-8004-T382 Cable

Heidenhain 277 236 01 Interpolation Digitizer

Allen Bradley 900061-01/02 PC Board 900061 8000-IOB_ Rev-E1 - 

Adaptive Micro Systems 45081003 Circuit Board (Pack of 10) - 

UC Components C-1832 Vented Screw C1832 (Pack of 6) - 

MTS 1015176T MTS Linear Position Sensor RPS0450UD511C202411

Allen Bradley 705BODB Starter 705-B0DB

CBM Electronics 100334 A Circuit Board - 

Allen Bradley 1775-MR8 CMOS RAM Memory 975066-01 - 

PHD ML199320 Parallel Gripper Rev A - New No Box

Banner BMRL6032A Light Curtain Reciever 38538

Part ET9093D-49 Block 93D018

Power Control 470A010-1 Circuit Board GATE DRIVER BOARD Rev 4 - 

Square D 8020 SCP-544 8020SCP544 Processor Module Series H/I

General Electric CR104PXC91 Contact Block (Pack of 36)

Gates 2800-14M-85 Timing Belt 280014M85

AMT 3880-97 388097 Self Priming Centrifugal Pump Factory Sealed

Racal FLU4-270-1-6807 Power Supply 41C5018-02 CNPUR002AA - 

Allen Bradley 836T-T351JX121X9 Pressure Control Series A

Heidenhain LS 186C Scale LS186C 336 963-16 - 

Allen Bradley 2050-M712077/1 2050M7120771 Motor Controller 2050-L

AEG Modicon 3200860-00-1 PanelMate Plus Screen - 

UC Components H-1320-A Screw H1320A (Pack of 39)

Fanuc IC660ELD100G 115Vac 8 I/O 2A Module - 

Mitsubishi HF1250 DYNA Color Display Monitor - 

Fanuc A16B-2202-0490 Power PCB A16B-2202-0490/02A - 

MagPower TS50SC Tension Sensor Serial Number 090409005

Telemecanique L100WS-2M1 Limit Switch L100WS2M1 16163 (Pack of 3)

Part 3351752B Ampro Circuit Board MD2202-D16 REV A (Pack of 3) - 

General Electric ZJ246N Rectifier ZJ246N 252 (Pack of 3) - New No Box

Stearns 5-66-6404-33 Coil Kit 566640433 (Pack of 3)

Helm B10C318-1C B10C3181C Circuit Board Z23264 (Pack of 3) - 

Hoffman A1614CHEMC Junction Box

Fanuc A16B-2202-0740 Board A16B-2202-0740/04A No Fan Connector - 

Fanuc A16B-2202-0741 Power PCB A16B-2202-0741/04A - 

Allen Bradley 1771-OAD Module 1771-0AD SD0QH1GM -