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Co2meter TX Manual

Sensor controller
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TX Sensor Controller
Manual
Revision H
REVISION 2
REVISION 3
18 November 2019 Rev. H

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Summary of Contents for Co2meter TX

  • Page 1 TX Sensor Controller Manual Revision H REVISION 2 REVISION 3 18 November 2019 Rev. H...
  • Page 2 The information in this document is protected under applicable federal law as an unpublished work and is confidential and proprietary to CO2Meter.com. Its use, disclosure, reproduction, or publication, in whole or in part, without the express prior written consent of CO2Meter.com. is prohibited.
  • Page 3 1.20. additional detail for 10 June 2019 compatibility w/ MX series. Elaboration in register definitions. Fix annotation of RS485 AB swapped. Rev. H TX Manual Changes for both O2/ 18 November 2019 TX Rev. H Copyright © 2019 CO2Meter, Inc.

  • Page 4: Table Of Contents

    Device Command 16 (0x0010) Save Holding Registers to Flash ............ 12 Device Command 17 (0x0011) Restore Factory Presets ..............12 Device Command 32 (0x0020) Zero Calibration ................... 12 TX Rev. H Copyright © 2019 CO2Meter, Inc. Device Command 33 (0x0021) Calibrate to Span ................. 12...
  • Page 5 ..........................15 EADING NPUT EGISTERS .......................... 15 RITING OLDING EGISTERS CHAPTER 6 CO2Meter GRAPHICAL CONFIGURATION AND RAPID DEPLOYMENT TOOL 18 ................................. 20 ENERAL CHAPTER 7 FIRMWARE UPDATES ....................20 ........................20 ROGRAMMING ONFIGURATION Processor .................................. 20 Programming Interface ............................. 20 Programming Voltage............................
  • Page 6 Figure 7-1 Programming Connections ..................21 Figure 7-2 ST-LINK/V2 Connections .................... 21 Figure 7-3 Initial Screen ........................23 Figure 7-4 Screen After Connection....................24 Figure 7-5 Erase and Programming Screen ................25 TX Rev. H Copyright © 2019 CO2Meter, Inc.

  • Page 7: Introduction

    Introduction This document is a technical reference for the CO2Meter.com TX Sensor Controller. About this Manual It provides the information necessary to use the sensor controller as well as information about configuring the controller for various applications. The sensor current supports the SST Luminox O2 sensors and the GSS CO2 MINIR sensors.

  • Page 8: Chapter 1 : Overview

    Chapter 1 : Overview The TX Sensor Controller is a high-performance controller supporting various types of gas General sensor modules. The controller supplies an RS485 Modbus RTU interface to the host system and a separate UART interface to the gas sensor module. The controller accepts a wide range (6 to 24Volt) power supply and provides a 4-20mA 3-wire current output.

  • Page 9: Chapter 2 : Communications Interface

    A common ground reference is normally required. For long lines, the twisted-pair should be terminated with a 120-ohm resistor at each end. The TX uses a 6 pin (2x3) header with 0.1-inch (2.54 mm) centers. In some cases, the Physical Connections header is not populated, and appropriate wire terminals are soldered directly to the header pads.

  • Page 10: Onnections Ssignments

    The Luminox sensor is installed centered on the solder side of the TX PCB. The sensor is Sensor Connections normally soldered to the board. 5V power is supplied to the sensor from a switching power supply. REVISION 2 REVISION 3 Figure 2-2 Sensor controller sensor mount side TX Rev.

  • Page 11: Chapter 3 : Registers

    Chapter 3 : Registers The TX device provides a total of 32 Input Registers and 32 Holding Register that may be accessed through the Modbus RTU protocol. General information on the protocol as used on CO2Meter Inc. devices can be found in the RS485 Modbus RTU Interface manual. The following descriptions are specific to the register assignments and commands supported by the TX.

  • Page 12: Ir30001 (Address 0) Busy/Error Status

    Bit 3 Command Failure. Bit 2 Flash Error. Bit 1 Invalid Command. Bit 0 (LSB) Power Fail. (Set at Power Up) All bits can be cleared by executing the “Error Reset” device command. TX Rev. H Copyright © 2019 CO2Meter, Inc.

  • Page 13: Ir30003 (Address 2) O2/ Co2 Concentration

    This register provides a manufacturer ID. All cCO2Meter Inc. devices will have 35642 IR30008 (Address 7) Manufacturer Id This register provides a model number. TX devices have a value of 1. IR30009 (Address 8) Model Number This register indicates the firmware level of the device high byte (MSB) = version and low IR30010 (Address 9) Firmware Version byte (LSB) = revision.
  • Page 14 HR40023 2740 Current output 20 mA Level, ADC Value corresponding to 20 mA current output. HR40024 Reserved HR40025 Reserved HR40026 Reserved HR40027 Reserved HR40028 Reserved HR40029 Reserved HR40030 Reserved HR40031 Command Parameter TX Rev. H Copyright © 2019 CO2Meter, Inc.

  • Page 15: Escriptions

    10000 10000 10000 100 HR40016 ADR 15 Modbus Address. The Default address for TX transmitter boards is 21. Sensors will respond to the configured address or to the address 0xFE (254) allow for the connection to a sensor of a unknown sensor.

  • Page 16: Hr40017 Adr 16 Comm Configuration (Stop And Parity)

    HR00020 ADR 19 Current loop test. When >0<4096 will cause 4-20 mA output to operate at that level for trim test. Used to establish level for 4 and 20 mA current output levels: HR 22-23 TX Rev. H Copyright © 2019 CO2Meter, Inc.

  • Page 17: Chapter 4 Device Commands

    Commands are used for operations such as calibration, error handling, and saving holding register content to non-volatile storage. Commands are also used for certain factory functions associated with the manufacturing and testing of the TX boards. Commands are written to Holding Register 40032 (Address 0x1F) parameters for Command and parameter registers commands are written to Hold Register 40031 (Address 0x1E).

  • Page 18: Device Command 2 (0X0002) Factory Use

    Suspend streaming, prior to sending the calibrate command to CO2 sensor. Device Command 41 (0x0029) resume streaming. To resume streaming, send after sending the calibration command. This command is reserved for factory use. Device Command 9985 (0x2701) Factory Use TX Rev. H Copyright © 2019 CO2Meter, Inc.

  • Page 19: Chapter 5 : Testing

    FTDI at the following link: https://www.ftdichip.com/FTDrivers.htm The FTDI cables are color coded. The labeling on the TX uses “B Data +” and “A Data - Cable Connections “conforming to the definitions of A and B in the RS485 standard. The definitions on the FTDI cable are correct for the Data Polarity but opposite for A and B.

  • Page 20: Ool

    6V to 24V. Many devices will operate with a power supply set as low as 5V. If the 4-20 mA current output is not used, the TX device may be powered from the 5V USB available on the FTDI connector. Note, however, that this is not recommended.
  • Page 21 0-31 should be populated similar to what is shown in figure 6-2. The values will differ than those in figure 6-2. The TX supports both the Write Single Register and Write Multiple Register functions. Writing Holding Registers When using the Modbus Master tool is usually easiest to use the Write Multiple Register function.

  • Page 22: Figure 5-1 Holding Registers

    Figure 5-1 Holding Registers TX Rev. H Copyright © 2019 CO2Meter, Inc.

  • Page 23: Figure 5-2 Input Registers

    Figure 5-2 Input Registers TX Rev. H Copyright © 2019 CO2Meter, Inc.

  • Page 24: Chapter 6 Co2Meter Graphical Configuration And Rapid Deployment Tool

    Chapter 6 CO2Meter Graphical configuration and Rapid deployment tool The CO2Meter software is available to download from CO2meter.com/ CO2Meter.com for Configuration, Calibration and Exercise, Laboratory applications and interface development. For software download: http://co2meters.com/register/ For UART only operation a FTDI cable is required, https://www.co2meter.com/products/sdk-sensor-replacement-cables?variant=55789862...
  • Page 25 TX Rev. H Copyright © 2019 CO2Meter, Inc.

  • Page 26: Chapter 7 Firmware Updates

    3-wire interface. The means of establishing the target voltage levels are programmer specific. During programming, the TX device must be powered by an external 6V to 24VDC supply Device Power connected to the power pins. Input voltage must be applied prior to programming.

  • Page 27: Figure 7-1 Programming Connections

    Figure 7-1 Programming Connections REVISION 2 REVISION 3 Figure 7-2 ST-LINK/V2 Connections +3.3V T Vcc TX Rev. H Copyright © 2019 CO2Meter, Inc.
  • Page 28 Insure that the STM programming device is connected to host device by a USB port. Start the STM Cube Programmer. The display should be similar to Figure 7-3 Initial Screen. TX Rev. H Copyright © 2019 CO2Meter, Inc.

  • Page 29: Figure 7-3 Initial Screen

    ST-LINK device. Check the ST-LINK configuration. It should match the settings shown on the figure. Press the connect button. The screen similar to Figure 7-4 Screen After Connection will Connect to Device display. TX Rev. H Copyright © 2019 CO2Meter, Inc.

  • Page 30: Device

    Press the browse button next to the “File path” to select the file to be programmed. This file should end with a “.srec” extension. Make sure that the “Verify programming” button is checked and that the “Skip Flash erase” button is not checked. TX Rev. H Copyright © 2019 CO2Meter, Inc.

  • Page 31: Figure 7-5 Erase And Programming Screen

    Figure 7-5 Erase and Programming Screen TX Rev. H Copyright © 2019 CO2Meter, Inc.

  • Page 32: Chapter 8 : Support

    Warranty starting from the date the meter was shipped to the buyer. During this period, CO2Meter.com warrants our products to be free from defects in materials and workmanship when used for their intended purpose and agrees to fix or replace (at our discretion) any part or product that fails under normal use. To take advantage of this warranty, the product must be returned to CO2Meter.com at your...
  • Page 33 If the troubleshooting guide above doesn’t help you solving your problem or for more information, please contact us using the information below. Support@CO2Meter.com (386) 256-4910 (M-F 9:00am–5:00pm EST) www.CO2Meter.com See CO2Meter, Inc. Terms & Conditions at: www.CO2Meter.com/pages/terms-conditions CO2Meter, Inc. 131 Business Center Drive Ormond Beach, FL 32174 Phone: 386-872-7665 | Fax: 866-422-2356 Email: Sales@CO2Meter.com...

  • Page 34: Chapter 9 : Appendix 1: Revision History

    T and H are fitted in the sensor. D. Luminox sensors are calibrated by the TX board by maintaining zero and span values in Flash. For the GSS sensors, the calibration is in the sensor. The existing zero and span calibration commands work properly with the GSS by sending the appropriate commands to the sensor.

  • Page 35: Evisions

    20mA max ADC Value, the output could be above 20mA. Revision 1.2 will cap the output to 20mA and all Gas Concentrations above the max ADC Value set in Holding Register Address 22 (HR40023 Current Loop 20mA Level) will be read as 20mA. TX Rev. H Copyright © 2019 CO2Meter, Inc.

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