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MTS Sensors Level Plus Interface Manual

Magnetostrictive liquid level transmitters with temposonics technology dda interface manual lp series
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Level Plus
Magnetostrictive Liquid Level Transmitters
with Temposonics
DDA Interface Manual
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Summary of Contents for MTS Sensors Level Plus

  • Page 1 Level Plus ® Magnetostrictive Liquid Level Transmitters with Temposonics Technology ® DDA Interface Manual LP Series...

  • Page 2: Table Of Contents

    DDA Interface Manual LP Series Table of contents 1. Contact information ..............3 2. Terms and definitions ..............4 3. Introduction .................6 4. Safety instructions ..............6 5. Quick start-up guide ..............6 5.1 Before you begin ..............6 5.2 Quick start-up procedure ............6 6.

  • Page 3: Contact Information

    Mailing and shipping address Mailing and shipping address MTS Systems Corporation MTS Sensors Technology Corporation Sensors Division 737 Aihara-cho, Machida-shi 3001 Sheldon Drive Tokyo 194-0211, Japan Cary, North Carolina, 27513, USA Technical support and applications Customer service Tel.: +81-42-775-3838...

  • Page 4: Terms And Definitions

    DDA Interface Manual LP Series FOUNDATION™ fieldbus 2. Terms and definitions An all digital, serial, two-way communications system that serves as the base-level network in a plant or factory automation environment. Developed and administered by the fieldbus FOUNDATION™. 6A Heavy Oils ‘Generalized Crude Oils’, Correction of Volume to 60 °F against API Gravity.
  • Page 5 DDA Interface Manual LP Series Strap Table A table of measurement correlating the height of a vessel to the volume Mass that is contained at that height. The transmitter can contain up to 100 The property of a body that causes it to have weight in a gravitational points.

  • Page 6: Introduction

    DDA Interface Manual LP Series Change the address to one that is suitable for the installation 3. Introduction network. Verify proper operation of product and or interface floats and 3.1 Purpose and use of this manual temperature. Turn off power to the transmitter. Before starting the operation of the equipment read this documentation Remove data lines.

  • Page 7: Hardware And Software Environments

    In addition, the DDA The Level Plus Model MG digital transmitter operates in a networked, hardware supports a command decoder that supports up to 128 different intrinsically safe RS-485 DDA software environment.

  • Page 8: Dda/Host Computer Communication Protocol

    DDA Interface Manual LP Series 8.2 Address byte 9. DDA/Host computer communication protocol Example 2: The DDA/Host computer communication protocol consists of two parts: X X X X X X X 1 the interrogation sequence generated by the host computer and the data response generated by the interrogated DDA transmitter.
  • Page 9 DDA Interface Manual LP Series After the DDA transmitter has retransmitted its local address and Example 8: received command, it will perform the requested measurement as <STX><dddd.ddd><ETX><ccccc> defined by the received command. After the requested measurement has been completed, the data for that measurement will be transmitted to Append checksum value the host in a predefined format including certain control characters.

  • Page 10: Network Protocol/Timing Considerations

    DDA Interface Manual LP Series 9.3 Network protocol/tming considerations transmitter The DDA network has several timing constraints that must be considered when designing and coding communication drivers. The DDA network follows the RS-485 standard which defines a multi-drop communication interface that uses differential drivers and receivers operating in half- duplex mode.

  • Page 11: Special Control Commands

    DDA Interface Manual LP Series Address/Command echo and the requested data. cannot be interrogated until time period ‘T12’ = 50 milli- Before the driver is disabled, the software must insure that seconds has elapsed. the command byte has been completely transmitted. This can be done by observing control flags from ‘UART’...

  • Page 12: Level Commands

    DDA Interface Manual LP Series 10. DDA Command definitions of decimal character • Fixed at two (2) characters to the right of decimal character • Five (5) character checksum appended after the ‘<ETX>’ character 10.1 Special control commands Command 00 Hex (0 Dec) - Transmitter disable command Command 0C Hex (12 Dec): Output level 1 (product) at 0.001 inch resolution (with checksum) This command can be used to disable an active transmitter (force...

  • Page 13: Temperature Commands

    DDA Interface Manual LP Series Data format: <STX><dddd.ddd:dddd.ddd><ETX><c- of decimal character in each data field cccc> • Fixed at one (1) character to the right of each decimal character in • Variable length record with one (1) to four (4) characters to the left each data field of each decimal character in each data field •...

  • Page 14: High-Level Memory Read Commands

    DDA Interface Manual LP Series 10.1 Multiple Output Commands (continued) • Variable length record with one (1) to four (4) characters to the left Command 29 Hex (41 Dec): Level 1 (product) at 0.01 inch resolution, of decimal character in first data field and average temperature at 0.2 °F •...
  • Page 15 DDA Interface Manual LP Series (float #1 and #2) Data format: <STX><dddd.ddd:dddd.ddd><ETX><ccccc> • The fifth data field is the control variable for innage/ullage level (Continued on next page) output • The sixth data field is reserved for future use; the output value for Command 4D Hex (77 Dec) (continued): this field is ASCII ‘0’...
  • Page 16 DDA Interface Manual LP Series • ASCII colon (:) is the ‘number of floats/number of DTs’ field and consist of the following six components: separator. • ‘<EOT>’ is ASCII 04 Hex 1. Host issued command (Part 1): <address><command> 2. DDA transmitter response: <address><command> echo DDA Transmitter Response (verification sequence) 3.

  • Page 17: Diagnostic/Special Command Set

    DDA Interface Manual LP Series • The first data field contains one (1) character that controls which ‘DT 10.4 Diagnostic/Special command set position’ memory location is written to (i.e. DT position #1, 2, 3, 4 enum alarmStatusBits or 5) INTERFACE_ALARM_HIGH = 0x0001 •...

  • Page 18: Digital Setup Software Installation, Setup And Calibration

    Example: B & B Electronics 485BAT3 (815-433-5100 www.bb-elec. com). Figure #: Data from device tab Calibration Level Plus PC Digital Setup RS-485 to RS-232 converter When you click the ‘Calibrate’ button in the ‘Data From Device’ tab win- Software (DDA) CD dow, the ‘Calibrate DDA Device’...

  • Page 19: Change Address

    DDA Interface Manual LP Series Change Address vice’ tab window (see Figure 28). The ‘Adjust DDA Gain’ window displays different parameter settings. All transmitters will have the ability to adjust To change the transmitter address, click the ‘Change Address’ button in the ‘Gain, SARA Blanking and Magnet blanking’...
  • Page 20 MTS, Temposonics and Level Plus are registered trademarks of MTS Systems Corporation MTS Systems Corporation MTS Sensor Technologie in the United States; MTS SENSORS and the MTS SENSORS logo are trademarks of MTS Sensors Division GmbH & Co. KG Systems Corporation within the United States. These trademarks may be protected in other 3001 Sheldon Drive Auf dem Schüffel 9...

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