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Summary of Contents for Acuity AccuRange AR550
- Page 1 AccuRange AR550™ Laser Sensor User’s Manual For use with AR550™ High Speed Laser Sensor June 13, 2024 Acuity Laser A product line of Schmitt Measurement Systems, Inc. 8000 NE 14th Place Portland, OR 97211 www.acuitylaser.com...
- Page 2 Limited Use License Agreement CAREFULLY READ THE FOLLOWING TERMS AND CONDITIONS BEFORE OPENING THE PACKAGE CONTAINING THE PRODUCT AND THE COMPUTER SOFTWARE LICENSED HEREUNDER. CONNECTING POWER TO THE MICROPROCESSOR CONTROL UNIT INDICATES YOUR ACCEPTANCE OF THESE TERMS AND CONDITIONS. IF YOU DO NOT AGREE WITH THE TERMS AND CONDITIONS, PROMPTLY RETURN THE UNIT WITH POWER SEAL INTACT TO THE DEALER FROM WHOM YOU PURCHASED THE PRODUCT WITHIN FIFTEEN DAYS FROM DATE OF PURCHASE AND YOUR PURCHASE PRICE WILL...
- Page 3 Procedures for Obtaining Warranty Service 1. Contact your Acuity distributor or call Schmitt Measurement Systems, Inc. to obtain a return merchandise authorization (RMA) number within the applicable warranty period. Schmitt Measurement Systems will not accept any returned product without an RMA number.
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Page 4: Table Of Contents
User’s Manual for the AR550™ Series Laser Sensor Rev. 3.1 Table of Contents Introduction ........................1 General Overview ..................... 1 Definition of Terms ....................2 Quick Start Instructions ..................... 2 1.3.1 Mounting ....................... 2 1.3.2 Serial Data Wires ....................3 1.3.3 Analog Output Signals ................... - Page 5 Sensor Cable, Wire Colors and Functions..............11 Power Supply (Red, Brown) ..................11 RS232 / RS485 Serial Comm. (Green, Yellow) ............12 Analog Output (Blue, Grey) ..................12 4.4.1 Voltage Output ....................13 Logic Outputs (Pink, Grey) ..................14 Serial Interface Operation ....................15 Binary Communications Protocol and Syntax ............
- Page 6 9.6.1 Output Rate ......................27 Maximum Integration Time (Binary: 0Ah, 0Bh; ASCII: Exxxx) ........27 Results Lock (Binary: 10h; ASCII: Dxxx) ..............28 Results Averaging Mode (Binary: 02h bit A; ASCII: TMx) ......... 28 9.9.1 Averaging Configuration (Binary: 06h; ASCII: Gxxx) ..........29 Demo and Configuration Software ................
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Page 7: Introduction
AR550 has a number of configurable parameters, but many applications can use the sensor in its default factory configuration. This manual contains information for a variety of AR550 sensor configurations that can be ordered from Acuity. Your specific AR550 model may not have all interfaces and functions described in this manual. -
Page 8: Definition Of Terms
performance. Sampling may be turned on and off. It can even be triggered using an input signal wire or a serial command. After making changes to the configuration, it may be viewed, saved in non- volatile memory, and restored. At power-on the sensor uses the most recently saved configuration settings. -
Page 9: Serial Data Wires
1.3.2 Serial Data Wires The serial connection is required to set up a unit for operation. If not using the Acuity Connectivity kit which includes a serial cable, the customer must make their own D-sub 9 serial connector. 1.3.2.1... -
Page 10: General Description
General Description The AR550 is an ultra-compact laser diode-based distance measurement sensor with available ranges covering 2 to 750 mm. Consult the AR550 data sheet for exact model range availabilities. The accuracy is generally specified with an absolute linearity of +/- 0.15% of the span with a resolution of 0.01% of the span for ranges up to the 750 mm model. -
Page 11: Mechanical Dimensions
2.2 Mechanical Dimensions The following diagram shows the mechanical dimensions for the AR550. The sensor unit has two Ø3.6 / Ø6x7 holes on the sides. On all models there is an 8-conductor supply cable (w/ a Binder series 712 8-pin connector) and an Ethernet cable (w/ a Binder series 712 4-pin connector) dedicated to Ethernet data transmission. -
Page 12: Laser Safety
2.4 Laser Safety Installers of laser sensors should follow precautions set forth by ANSI Z136.1 Standard for the Safe Use of Lasers or by their local safety oversight organization. The AR550 is a class 3R or 3B product under FDA 21CFR. Red Lasers Blue Lasers Figure 1 AR550 laser safety labels (all available diodes) -
Page 13: Sensor Maintenance
2.5 Sensor Maintenance The AR550 sensor and module require little maintenance from the user. The sensor lens should be kept clean of dust buildup as a part of regular preventative maintenance. Use compressed air to blow dirt off the windows or use delicate tissue wipes. -
Page 14: Installation And Checkout
Installation and Checkout 3.1 Mounting Mount the sensor in such a way that the case not twisted or warped. Do not clamp or squeeze the sensor case excessively. If the case is distorted, the sensitivity and accuracy of the sensor may be affected. 3.2 Cabling for sensor unit The AR550 sensor has a multipurpose cable with 8 conductors (included) and an ethernet cable with 4 conductors. -
Page 15: Serial Connection To A Host Computer
It also has an AC power supply and a 2m RS232 serial cable for connection to a PC. Without the Acuity connectivity kit, the user must connect a DB9 plug to the cable using the directions below. -
Page 16: Serial Communications Check
3.3.1 Serial Communications Check If no information is received over the serial port, check the power supply and serial wire connections. The sensor may be in a configuration that prevents serial communication, such as being set at the wrong baud rate or in a polling mode. -
Page 17: Signal And Power Interface
Signal and Power Interface 4.1 Sensor Cable, Wire Colors and Functions The AR550 sensor includes a multipurpose cable (sensor cable) with solder tail wires. Connection and termination according to the instructions is essential for correct sensor operation. Read the wire descriptions for connection information. -
Page 18: Rs232 / Rs485 Serial Comm. (Green, Yellow)
4.3 RS232 / RS485 Serial Comm. (Green, Yellow) Your sensor is configured with either RS232 or RS485 communications See Serial Interface Operation (section 5) for information on commands and data. The maximum baud rate is 921.6 KBaud for both RS232 and RS485. -
Page 19: Voltage Output
4.4.1 Voltage Output The voltage output connection scheme is shown in the. To reduce noise, it is recommended to install an RC (resistor / capacitor) filter before the measuring instrument. The filter capacitor value is indicated for maximum sampling frequency of the sensor (9.4 kHz) and this value increases in proportion to the frequency reduction. -
Page 20: Logic Outputs (Pink, Grey)
4.5 Logic Outputs (Pink, Grey) The Pink wire is a multi-purpose logic output / interface that can operate in eight distinct modes. The functionality can be configured according to the instructions in section 8 . Functions include distance alarms, multi- sensor synchronization, setting of Zero Point via hardware control, encoder input, Ethernet packet counter reset, and control of the laser ON / OFF state. -
Page 21: Serial Interface Operation
Serial Interface Operation This section refers to serial communication protocols for both the Sensor and Module versions of the AR550. 5.1 Binary Communications Protocol and Syntax Serial port communication is required to configure the AR550 for operation. The easiest way to communicate is by using a PC with an RS232 communication port and a terminal emulation program that uses hexadecimal binary format. -
Page 22: Answer
5.1.2 Answer An ‘answer’ is a data burst that can be transmitted by a ‘slave’ during the course of the session. All messages with an ‘answer’ burst contain 1 in the most significant digit. The data in a message is transferred in nibbles (aka:”tetrads”). When a byte is transmitted, the lower tetrad goes first, and then follows the higher tetrad. -
Page 23: Data Stream
5.1.3 Data Stream ‘Data stream’ is an infinite sequence of data bursts or batches transmitted from ‘slave’ to ‘master’, which can be interrupted by a new request. In transmission of the ‘data stream’ one of the ‘slaves’ fully holds data transfer channel, therefore, when ‘master’... -
Page 24: Analog Output Operation
Analog Output Operation AR550 sensors have a 0–10 V analog output. The analog output uses the same two wires. Please refer to Section 4.4 for connection details. The analog output is updated with each sample measured. The analog output will deliver a current which increases linearly from 0 volts at the range beginning point to 10 volts at the range end point. -
Page 25: Analog Output Working Range (Binary: 0Ch, 0Dh, 0Eh, 0Fh; Ascii: None)
6.3 Analog Output Working Range (Binary: 0Ch, 0Dh, 0Eh, 0Fh; ASCII: none) Default Value [Beginning of Range]: 0 Default Value [End of Range]: 16384 Resolution of the analog output can be increased by adjusting the window size and location within the measurement span. The analog signal will be scaled within this window only. -
Page 26: Ethernet Output Operation
Ethernet Output Operation Ethernet output is standard on AR550 models. It is the only digital communication method that allows transmission of measurement data at the full 70 kHz sampling rate. Note 1: The Ethernet interface is used only for the transmission of data from the sensor. -
Page 27: Data Packet Format
7.3 Data Packet Format The sensor sends 512 byte data packets to IP port 603: Byte Value Low byte of the 1 measurement High byte of the 1 measurement Status word for the 1 measurement Low byte of the 2 measurement High byte of the 2 measurement... -
Page 28: Data Structure
7.4 Data Structure Measurements - Like in binary serial mode, measurements are transmitted as 2-byte words. The value of the result transmitted by a sensor (D) is so normalized that 4000h (16384) corresponds to a full range of the sensor (S in mm), therefore, the result in millimeters is obtained by the following formula: X=D*S/16384 (mm) (1). -
Page 29: Logic Interface(S) Operation
Logic Interface(s) Operation All AR550 sensors include a multi-purpose logic line. See the wiring description in section 4.5. 8.1 Binary Communication (02h bits M2, M1, and M0) Default Value: 000 – Distance Alarm Mode When the laser is set to binary communication, this line can be set to one of the eight modes defined by the M bits of parameter 02h Distance Alarm Mode: To activate this mode from another, set bits M2, M1, and M0 to 000. -
Page 30: Ascii Communication (Tlx)
8.2 ASCII Communication (TLx) Default Value: 0 – Distance Alarm Mode When the laser is set to ASCII communication, the Logic Interface line can be set to one of four modes using the command TLx: Distance Alarm Mode: This is the default logic output. To activate this mode from another, use command TL0. -
Page 31: Performance Optimization
Performance Optimization This section describes how to configure the AR550 sensor for best use in your particular application. 9.1 Baud Rate (Binary: 04h; ASCII: Bxxx) Default Value: 4 – 9600 bit/s (baud) AR550 automatically begins measuring outputting distance measurements to the analog and serial lines when powered-up. The default baud rate is 9600 bit/s. -
Page 32: Zero Point (Binary: 17H, 18H; Ascii: Zxxxxx)
9.4 Zero Point (Binary: 17h, 18h; ASCII: Zxxxxx) Default Value: 0 This parameter allows the user to set a zero point within the sensor’s measurement span. The factory default value for the zero point is the beginning of the measurement span. Note that users can also set the zero point through hardware controls. -
Page 33: Output Rate
Binary Parameters: 08h – Low byte for the sampling period. 09h – High byte of sampling period. ASCII Command: Sxxxxx – Where xxxxx is the sampling period. Value ranges: In Time sampling mode: 10 to 65535. The time interval in increments •... -
Page 34: Results Lock (Binary: 10H; Ascii: Dxxx)
Binary Parameters: 0Ah – Low byte for maximum integration time. 0Bh – High byte for maximum integration time. ASCII Command: Exxxx – Where xxxx is the maximum integration time. Value ranges: 2 to 3200. This value specifies the limiting integration time for the CMOS array in increments of 1 μs. -
Page 35: Averaging Configuration (Binary: 06H; Ascii: Gxxx)
9.9.1 Averaging Configuration (Binary: 06h; ASCII: Gxxx) Default Value: 1 – No Averaging Depending on the selected averaging mode (Number or Time), this parameter controls either the number of results to be averaged or the time for averaging. Averaging can reduce noise or occasional spikes in the output of the sensor caused by inaccurate readings in dynamic applications. -
Page 36: Demo And Configuration Software
10. Demo and Configuration Software The AR550-SP software is intended for making simple serial (or Ethernet, if ordered) connections to the AR550 for demonstration purposes and configuration of the many sensor parameters. It is also possible to archive measurement data to a file using this software. 10.1 Program Setup Start file AR550setup.exe and follow the instructions for the installation... -
Page 37: Sensor Operation
If the selected parameters correspond to the parameters of the sensor interface, the program will identify the sensor, read and display its configuration parameters: If connection a connection cannot be established, a prompt will appear asking to make an automatic search for the sensor. To start search, press the Yes button and a configuration window will appear Where: it will be necessary to set the search range for the... -
Page 38: Display And Archiving Of Data
Pressing the Stream button will switch the sensor to the data stream trans-mission mode (07h request code). Move the target object and observe changes in the distance readings. The status line in the lower part of the window will show current data transmission and refreshing rates. -
Page 39: Setting And Saving Sensor Parameters
To manipulate the chart image, right mouse click on the chart to reveal the corresponding menu: Additionally, one can manipulate the chart image, press the mouse wheel for movement or rotating the mouse wheel for zooming capabilities. 10.5 Setting and Saving Sensor Parameters 10.5.1 Setting Parameters Configuring is only accomplished through RS232 or RS485 interfaces. -
Page 40: Saving Parameters
10.5.2 Saving Parameters After setting one or more parameters as required, users must write them into the sensor memory. Write parameter by clicking File >Write parameters or by clicking the button. Be sure to perform testing of the sensor operation with the new parameters. Once satisfied, it is necessary to store the new parameters in nonvolatile memory by clicking File >... -
Page 41: Serial Command Quick Reference
11. Serial Command Quick Reference 11.1 Binary Communications Reference Request Description Message Answer code (size in bytes) (size in bytes) Device identification — - device type - firmware release - serial number - base distance - range Reading of parameter - parameter code - parameter value Writing of parameter... - Page 42 1 - full range mode (sampling mode): 0 – time sampling (default) 1 – trigger sampling is not used Network address 1 - 127 (default: 1) Rate of data transfer through serial 1 - 192, (default: 4) port specifies data transfer rate in increments of 2400 baud; (e.g., 4 means 4 ×...
- Page 43 byte of Subnet Mask byte of Subnet Mask byte of Subnet Mask 0th byte of Source IP Address default: C0A80003h = 192.168.0.3 byte of Source IP Address byte of Source IP Address byte of Source IP Address Lower byte of the number of 1 - 168 (default: 168) measurements in Ethernet packet specifies the number of measurements in one Ethernet packet...
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Page 44: Ascii Communications Reference
11.2 ASCII Communications Reference The following are the command codes for the ASCII protocol. When entering a request code, it should be followed by the CR and LF codes in your terminal emulator. Each answer will also be followed by CR and LF codes. Request Name Description... - Page 45 Sxxxxx Sampling period 1) 10 - 65535, (default: 5000) When laser is set to Time Sampling mode (TSx) this is the time interval (in increments of 1 μs) 2) 10 - 65535, (default: 5000) When laser is set to Trigger Sampling mode (TSx) this is the division for the external synchronization input Note: See section 8.6 for further explanation Exxxx...
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Page 46: Accessories
12. Accessories 12.1 Protective Enclosure Acuity offers an air-cooled, protective housing for the AR550. It is designed to be used in harsher environments of higher ambient temperature or airborne particles. The temperature of compressed air at the sensor input must be <25 °... -
Page 47: Spray Guard
12.2 Spray Guard The optional spray guard is designed to minimize the amount of dirt or liquid spray from reaching the optical windows of the sensor. Figure 7 Spray Guard AR550 Operation Manual...
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