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Summary of Contents for Mantracourt DSCUSB
- Page 1 DSCUSB Advanced User Manual mantracourt.com DSCUSB Digital Sensor Card USB – Strain Gauge Input...
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Page 2: Table Of Contents
Read a Parameter....................................17 Response Message Formats ................................. 18 Software Command Reference ................................18 Serial Port Settings ................................... 18 Commands in Access Order .................................. 19 Chapter 5 Production Environments ..........................20 COM Port Allocation ....................................20 Mantracourt Electronics Limited - DSCUSB Advanced Manual... -
Page 3: Chapter 1 Introduction
Chapter 1 Introduction This chapter provides a brief introduction to the DSCUSB product and what to expect from this manual. Overview The DSCUSB product family comprises of Digital Sensor Cards that connect sensors to your PC via USB. The DSCUSB product is a compact, high-precision Strain Gauge Converter; converting a strain gauge sensor input to a digital output and is connected to a PC via a USB port. -
Page 4: Chapter 2 Dsc Toolkit Software
Chapter 2 DSC Toolkit Software Please refer the DSCUSB Standard manual for information on installing the DSC Toolkit software. This chapter assumes that you have already installed the DSC Toolkit software. Information Page When you select a connected module (or if only one module is connected) the information page is displayed. This manual will deal with the Advanced Calibration section of the DSC Toolkit software. -
Page 5: Advanced Calibration Page
If the module has been protected the icon will appear greyed out and you will have to enter a passcode to access the Advanced Calibration page. If the module is unlocked or you enter the correct passcode the following page will be displayed. Mantracourt Electronics Limited - DSCUSB Advanced Manual... -
Page 6: Basic Calibration
Next, apply the low weight and allow a settle time. Click the ‘Acquire’ button then apply the high weight. After another settle time click the second ‘Acquire’ button and the calibration is complete. Table Calibration Mantracourt Electronics Limited - DSCUSB Advanced Manual... - Page 7 Choose 2 points from the loadcell certificate and enter the mV/V values and the weights on the certificate (or convert the certificate weight to any other engineering unit of your choice) click the ‘Calibrate’ button and the calibration is complete. Mantracourt Electronics Limited - DSCUSB Advanced Manual...
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Page 8: Compensated Calibration
Once enough time has elapsed for the temperature to stabilise you can click the Acquire button and that button will become disabled and the next enabled. Once you have completed all the required points you will see the following message. Mantracourt Electronics Limited - DSCUSB Advanced Manual... -
Page 9: Auto Calibration
Choose 2 points from the loadcell certificate and enter the mV/V values and the corresponding weights on the certificate (or convert the certificate weight to any other engineering unit of your choice) click the ‘Calibrate’ button and the calibration is complete. Mantracourt Electronics Limited - DSCUSB Advanced Manual... -
Page 10: Linearisation
Once you have entered the engineering units weights for each point you can apply the weight, wait a settle time then click the appropriate Acquire button. Once you have completed all points the following message will be displayed. Mantracourt Electronics Limited - DSCUSB Advanced Manual... -
Page 11: Limits
Here you can set limits below and above which the warning indicators will be displayed on the Information Page for the standard user. These limits should cover the operational range that the combined loadcell and DSCUSB are allowed to operate over. -
Page 12: Units
Click on the Units Text field to pop up the unit selection dialog window. Select the desired units from the drop down list. If you desired units are not in the list choose Custom and you can type in up to 6 characters. Mantracourt Electronics Limited - DSCUSB Advanced Manual... - Page 13 Copy To User button – Usually you will want to click this to make your units selection visible to the standard user. If you do not click this then the standard user may see previously entered units or in the case of a new module there will be no units displayed. Mantracourt Electronics Limited - DSCUSB Advanced Manual...
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Page 14: Protection
Advanced Calibration section of the software. If you forget the passcode you will need to contact your module supplier so please remember the passcode and keep it safe. Mantracourt Electronics Limited - DSCUSB Advanced Manual... -
Page 15: Chapter 3 Hardware
Chapter 3 Hardware Alternative Form Factors As well as being available in a plastic case there are some variations of the DSCUSB that are supplied uncased. These variants may or may not have connectors fitted. Please find connection details below. -
Page 16: Reducing Sensitivity
2. The purpose of increasing sensitivity is to reduce reading noise, which governs the effective resolution. Using software gain alone obviously gives reduced performance. 3. The sensitivity should, however, not be set greater than typically 1mV/V: Beyond this, input noise usually dominates and no extra benefit can be achieved. Mantracourt Electronics Limited - DSCUSB Advanced Manual... -
Page 17: Chapter 4 Communications
SW-DSCUSBDRV. These drivers create a virtual serial port (COM port) for each DSCUSB module that is plugged in and so the modules can be communicated with as if they were plugged into serial ports. -
Page 18: Communication Options
This is available from our website and is named SW-DSCUSBDLL. Communications Protocol If you are writing your own software to communicate with the DSCUSB module you will need to adhere to the ASCII protocol to request data from the module. The ASCII protocol uses only printable characters and carriage-return (‘<CR>’), which allows a “dumb”... -
Page 19: Response Message Formats
Station Address A three-digit ASCII decimal number (0-999), determining which slave device(s) the command is intended for. All three digits must be sent. In the case of the DSCUSB this will always be 001 Separator always present. As no checksum or message verification technique is used, slaves use this as an extra check on message validity ... -
Page 20: Commands In Access Order
Shunt cal ON – SCOF Shunt cal OFF – OPON Digital Output on OPOF Digital output off tempco n-points byte CT1..5 tempco Temp points float CTG1..5 tempco gain-adjust float CTO1..5 tempco offset-adjust float Mantracourt Electronics Limited - DSCUSB Advanced Manual... -
Page 21: Chapter 5 Production Environments
Contact Mantracourt if you would like this software. When you first plug in a DSCUSB module a unique COM port will be allocated but you can change that using Device Manager to whatever COM port you would like to use. From that point onwards different modules will be allocated the same COM port.