Xylem H-3311 User Manual

H-3301/3311 OWNERS MANUALV2.1D34 0514INCREMENTAL SHAFT ENCODER WITH SDI-12 AND QUADRATURE OUTPUTS

8H-3311 LCD DISPLAYThe H-3311 has the same functionality as the H-3301 with the addition of a built in display and manual offset adjustment. The LCD d

9SDI-12 COMMAND & RESPONSE PROTOCOL03 /

10SDI-12 COMMAND & RESPONSE PROTOCOLThis is a brief description of the Serial Digital Interface (SDI-12) Command and Responseprotocol used by the

11SDI-12 Command & Response ProtocolCommand DescriptionaM! Make MeasurementaMC! Make Measurement with CRCaC! Make Concurrent MeasurementaCC! Make

12SDI-12 COMMAND & RESPONSE PROTOCOL ttt is a three digit integer (000-999) specifying the maximum time, in seconds, the sensor will take t

The “Concurrent Measure with CRC” command causes a measurement sequence to be performedwith a CRC appended to the data. Data values generated in respo

14SDI-12 COMMAND & RESPONSE PROTOCOLThe “Send Data” command returns sensor data generated as the result of previous “aM!”, “aC!” or“aV!” commands.

The “Send Acknowledge” command returns a simple status response which includes the address ofthe sensor. Any measurement data in the sensor’s buffer i

16SDI-12 COMMAND & RESPONSE PROTOCOLThe “Verify” command causes a verify sequence to be performed. The result of this command issimilar to the “aM

The “Change Sensor Address” command allows the sensor address to be changed. The address isstored in non-volatile EEPROM within the sensor. The H-3301

This user manual is a guide for the H-3301/3311 shaft encoder. For more information, updated manuals, brochures, technical notes, and supporting soft

A is an upper-case ASCII character. n is the new sensor address to be programmed (“0-9”, “A-Z”, “a-z”, “*”, “?”).NOTE: To verify the new addres

19SDI-12 Command & Response ProtocolThe H-3301/3311 processes the raw shaft encoder position with a mX+b equation. The slope (m)and offset (b) ter

20SDI-12 COMMAND & RESPONSE PROTOCOLThe H-3301/3311 processes the raw shaft encoder position with a mX+b equation. The slope (m)and offset (b) ter

21SDI-12 Command & Response ProtocolGeneralInput: Shaft PositionOutputs: SDI-12 & 2-Wire QuadratureResolution (SDI): 200 counts/rev

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1Contents & Warranty“WATERLOG™ PRODUCTS MANUFACTURED BY YELLOW SPRINGS INSTRUMENTS CO., INC. are warranted by Yellow Springs Instruments Co., Inc.

INTRODUCTION01 /2

The H-3301/3311 is a precision shaft encoder with a resolution of two hundred counts per revolution (0.005 ft with a 1 ft circumference pulley). The H

The H-3301/3311 comes from the factory with the following settings: SDI Address: 0 Slope: 0.0050 Offset: 0.000With these values Stage will be in un

5Introductionposition count with a software flag or “signature”. If the power is removed momentarily the H-3301/3311 will resume operation using the c

6INTRODUCTION• Make certain the encoder’s output does not go negative or more than +5.0 Volts• Make certain the ground and power pins are connected to

7H-3311 LCD DISPLAY02 /