Omega Speaker Systems High Speed Load Cell Interface Card LCIC-WIM-BEN Manual do Utilizador Página 1

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95. After a while, you’ll have this display:Click ‘Finish’.Notes1. It might occur that the wizard will return to step 3,requiring to repeat the proc

103. Utilities3.1 Setup & Running 1. Run the setup(s) of the LCIC-WIM utilities in the folders: * LCIC-WIM-CALIBRATION * LCIC-WIM-SETTINGS2

113.2 The Calibration Utility 3.2.1 GeneralThe calibration utility (LCIC-WIM-CALIBRATION) enables to calibratethe LCIC-WIM board adjusting it to yo

12The five calibration steps are:Step 1 – Show DataThis step introduces both the parameters and the current readings, asreceived from the board. The s

13Step 2 – Pseudo Calibration / ParametersThis step starts the calibration procedure. It enables to change calibrationparameters. Whether you changed

14Step 3 – Pseudo Calibration / ZeroThis step enables to redefine the ‘zero’ level. Click ‘Skip’ if you aresatisfied with the previous definition of

15Step 4 – Pseudo Calibration / WeightThis step enables to redefine the ‘weight’ level. Click ‘Skip’ if theprevious ‘weight’ level was OK. Even if the

16Step 5 – Save or QuitThis is the final step – here you decide whether to confirm the pseudocalibration, or leave it out. Before you decide, you may

173.2.2 The Calibrations LibraryEach calibration that the user applies may be saved in the ‘CalibrationsLibrary’. Later on, the user may use that libr

183.2.3 ParametersTTThhhiiisss ssseeeccctttiiiooonnn dddeeessscccrrriiibbbeeesss ttthhheee pppaaarrraaammmeeettteeerrrsss tttooo bbbeee

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193.2.4 Calibration Efficiency (CE)The potential range of A/D points is between 0 and near ±8,400,000. The'Calibration Efficiency' specifies

203.3 The Settings UtilityThe LCIC-WIM-SETTINGS utility gives control to card’s filters, analogoutput, fill mode parameters and more. The utility has

21* The rate of updating the analog output is depends on theUpdate Frequency parameter. For example, when UpdateFrequency is 4, the analog output is u

223.3.1.2 Tools / Baud Rate for SCI port Click ‘Tools’ / ‘Baud Rate for SCI port’ to see the current baud rate for theRS232/RS485 serial port

233.3.1.3 Tools / General Setpoints The LCIC-WIM board has four digital outputs. Each of them may be defined– through the Tools / General Set

243.3.2 ParametersThe following sections describe the various parameters. After changingparameter(s), click the ‘Save to Board’ button and wait a whil

253.3.2.1.4 Get results immediatelyControls card’s response in communication during a special mode, such asthe Fill mode:When checked, the card assume

263.3.2.2 Auto ZeroThe ‘Auto Zero’ optional feature supplies an automatic correction to creeps inthe zero level during a special mode (such as the fil

273.3.2.3 Start Fill-mode3.3.2.3.1 Fill-mode starts automatically upon card resetWhen this option is activated (checked), the card startsautomatically

283.3.2.4 Filtering Board’s digital filtering is used to "smooth" the read samplings byaveraging a pre-set number of the internal reading

2Table of Contents1. Introduction1.1 General Description1.2 Typical Applications2. Installing the board in the PC3. Utilities3.1 Setup & Run

294. Programming your Application The control of the board is by commands and parameters,described below. You may either use them directly (see als

30c. Get a single reading of:weight, A/D or temperature:.Get weight (after Filter2, not rounded to resolution).?Get weight (after Filter2, rounded to

31h. RS485: Address selection, setting & reading(for more details and examples refer to section D.5; except‘Nx<c/r>’, these commands are ava

32i. Misc.:z (lower case z)Manually zero the gross weight. The effect of this functionis temporary — it expires upon card reset.Response (versions 1.1

33Summary of Weight & A/D Reading CommandsReading TypeFiltering LevelWeightA/DRoundedtoResolutionNotRoundedFilter1Filter2.vv?vv>vvSingleReading

344.2 ParametersParameternumberParameter DescriptionDataType1Load Cell mV/V (1, 2 or 3. 0 = unknown).Float2Units: 0=g, 1=kg, 2=ton, 3=oz, 4=lb.Float3F

3523Filter1 value: 2-256.Becomes effective only after a system reset (eitherpower off/on or using the ‘S’ command).Float24Filter2 value: 2-256.Becomes

361024-1034Calibration Name (32 characters max.)(Organised 3 characters per location; in case thelength is less than 32, the last character is followe

374.3 LCIC-WIM ActiveXUnless otherwise specified, a function returns aBoolean: True for success, or False for failure.4.3.1 Start/Stop Communication

384.3.2 VariablesThe system has variables with which the user may adjust the system tohis needs and communicate with the I/O. Actually these variables

34. Programming your Application4.1 Commands4.2 Parameters4.3 LCIC-WIM ActiveX4.3.1 Start/Stop Communication4.3.2 Variables4.3.3 Filter

39Variables TableCategoryVariable NameDescriptionGetSetCalibration_NameName of calibrationVCalibration_DateCalibration date (MMDDYY).VCalibration_Time

40Variables Table (cont’d)CategoryVariable NameDescriptionGetSetWeight_NativeCurrent weight after Filter2,not rounded.VWeight_RoundedCurrent weight af

41Variables Table (cont’d)CategoryVariable NameDescriptionGetSetAnalog_Output_Mode0 = Manual, 1 = Auto.VVAnalog_Output_LevelVoltage in the analog outp

42Variables Table (cont’d)CategoryVariable NameDescriptionGetSetFast ModeFM_UpdatesFM_Updates = Each how manyinternal updates there will be aFast Mode

434.3.3 FiltersSet_Filtering(Filter1, Filter2, Decimator)Filter1 (Integer): 2 – 256 or 0.Filter2 (Integer): 2 – 256 or 0.Decimator (long): 1 – 1000 or

444.3.4 Fast Mode(The Fast Mode is not available with RS485.)During the Fast Mode there is auto high speed transmission of weight readingsto the commu

45The mechanism to receive the data uses events and methods asdescribed below:The transmission sends blocks of information.Stage 1Except the last one,

46How to work with the Fast Mode in VB using the ActiveX During the Fast Mode process the board transmits mass data to the PC.Therefore, in order

47Interpreting the data in a block : Each block includes integer weight values separated by a c/r.In order to get the real weight values, the

48Appendix A: I/O & the LED DisplayA.1 General Notes about the I/O* The digital I/O is available on CONN6 (15 pin Dsub).* Digital OutputsThe outpu

4Appendices A. I/O & the LED DisplayA.1 General Notes about the I/OA.2 Connecting External Devices to the InputsA.3 LCIC-WIM I/O & Ana

49* ConnectionsThe following table shows the I/O pinout:PinFunction1Output 12Output 23Output 34Output 45Input 16Input 27Input 38Input 49I/O Voltage 0V

50A.2 Connecting External Devices to the Inputs

51A.3 LCIC-WIM I/O & Analog Out

52A.4 The LED DisplayUpon board restart, the two following messages are shown on the LEDdisplay – each for a while:LCIC x.xx x.xx is board’s DSP versi

53Appendix B: Scaling the Load Cell InputThe full scale of the input coming from the load cell may be adjusted bythe LK4 jumper (which is next to load

54Appendix C: Load Cell Connections

55Appendix D: USB, RS232 & RS485 In addition to USB, The LCIC has an option for both full-duplex RS232and half-duplex RS485 interfaces. These a

56D.2 Baud RateFor the USB, the maximal baud rate is 921,600. The board responds wellwithout a need to pre-define the used b/r.For serial communicatio

57D.5 RS485Up to 64 LCIC-WIM boards may be connected to one PC port.In the PC side, use a converter either from the RS232 port, or from theUSB port (t

58RS485 CommandsExcept ‘Nx<c/r>’ (paragraph d), these commands are availablealso in the fill mode.a. Activate address x (x=1, 2, 3, …, 62, 63, 6

5F.7 Dimensions (mm)F.8 Misc.G. Trouble-shootingG.1 Card does not respond after PC power-onH. Zero & TareH.1 The Zero functionH.2 The A

59Notes1. Wait 10 ms after sending the colon (‘:’) before sending the rest of thecommand (‘x<c/r>’).2. Wait 30 ms after sending the ‘:x<c/r

60b. Hello::999<c/r>The ‘hello’ command is like a ‘who is alive?’ question.This is useful in order to detect which addresses exist in the system

61c. Read the RS485 address of the active board:nBoard’s response:’#x<c/r>’, where x is the address of the active board.x=0 means that the board

62RS485 Responses(Most responses are already described in the ‘Commands’ section.)!x<c/r> Address x is already active. See Commands/a/1.^x<c/

63ExamplesSuppose there are 3 boards in the system, addressed 1, 2 & 3.(The blue text is the PC side, the red text is the response from theboard(s

64So far everything was smooth; however, the quality of the communicationdepends – besides the board and the PC – also on the environment. Hence,there

65Example #3: No response from the old board n#1:2A2 Board #2 becomes activeBut the ‘^2’ response, telling that board #1 became inact

66Board selection by the supplied utilitiesThe three supplied utilities – LCIC-WIM-CALIBRATION, LCIC-WIM-SETTINGS & LCIC-WIM-MONITOR – enable easy

67Appendix E: Fill Mode E.1 IntroductionThe LCIC-WIM supplies a Fill Mode in which it may control a fillingoperation, using the hardware inputs (sec

68E.2 Hardware InputsInput #1Input #2Input #3Input #4OFF =ManualON = Turnoutput #1 onON = Turnoutput #2 onN/AWhenin errorstatus:ON =Terminatean ErrorS

61. Introduction 1.1 General Description The model LCIC-WIM is a very High Speed, Intelligent Load CellInterface Card with USB/RS232/RS485. Besi

69E.3 Hardware OutputsOutput #1Output #2Output #3Output #4Option #1Fast ValveSlow ValveOption #2Fast Valve = Output #1 + Output #2Slow Valve = Output

70E.4 Filling ParametersNotes1. There is a set of three setpoints. Once they are specified (using the Settingsutility), the user may switch to a

71Auto Correction &Averaging x last fillingsWhen ‘Auto Correction’ is checked, the board tries to correct thefilling amount, based on the results

72E.4.1.3 Valid Results LimitsThe resulting filling weight should normally be inside a userpre-defined ‘valid range’. In case the weight exceeds that

73E.4.1.4 Stabilization Criterion (Tare & Stop)At the beginning and at the end of a filling cycle the board waits for thescale to stabilize in ord

74E.4.2 Filling By = TimeE.4.2.1 Filling by Time ParametersSetpoint #xThe required total filling time when the user selectssetpoint #x (x = 1, 2

75E.4.4 The Filling Configurations LibraryThere is a ‘Filling Configurations Library’ in which you may save sets offilling configuration parameters. T

76E.5 LED Display Notations In Fill-mode, the LED display shows the current sub-mode:m Fill Manual Fill-mode (input #1 is off)AutoFill Auto F

77E.6 CommandsEnter & Exit Fill ModeF Enter Fill Mode (from General Mode)x Exit Fill Mode (to General Mode) (small ‘x’)Inside the Fill Modeg Start

78s Get current status (small ‘s’)Response Example:Current_Status: W= 17.14 Tr= 6.65 Cv= 0.00 M=F A=I S= 0Legend: Current (gross) weight

72. Installing the board in the PC(The following description refers to Windows XP. Obviously, onanother operating system it might be different.)1. Ma

79E.7 Error Codes101 Actual Filling Weight < Low Limit of 'Valid Result Limits'.102 Actual Filling Weight > High Limit of 'Valid

80Appendix F: Specifications F.1 Load Cell Input • 5 Volt excitation for upto 10 load cells (350 Ohm) • Compatible with 1, 2 &

81Appendix G: Trouble-shootingG.1 Card does not respond after PC power-onQ. Everything was OK, but after PC restart the card suddenly stoppedrespondin

82Appendix H: Zero & TareThere are two functions which are similar, yet actually different: Zero &Tare:• The Zero function supplies both manu

83H.2 The Auto-Tare functionThis function supplies a way to define the meaning of the setpointparameter:* When the ‘AutoTare’ option is not activated,

WARRANTY/DISCLAIMEROMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for aperiod of 13 months from date of

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84. Select the second option, click ‘Next’ and browse to the“FTDI - VCP (Virtual COM Port) Driver” folder (under thefolder where you copied the insta