Banner Wireless Configurable Gateways Nodes

7/30/2019 Banner Wireless Configurable Gateways Nodes

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SureCross DX80 Wireless M-GAGE Node

Internal battery FlexPower Node for vehicle detection

WARNING Not to be used for personnel protectionNever use these products for personnel protection. Doing so could lead to serious injury or death.

These products do NOT include the self-checking redundant circuitry necessary to allow their use in personnel safety applications.

A failure or malfunction can cause either an energized or de-energized product output condition. Consult your current Banner SafetyProducts catalog for safety products that meet OSHA, ANSI, and IEC standards for personnel protection.

Features

The SureCross DX80 is a radio frequency network system built around a Gatewayand one or more Nodes.

Internal three-axis magnetoresistive-based technology senses three dimensionalchanges to the Earths magnetic field caused by the presence of ferrous objects

Designed to minimize the effects of temperature changes and destabilizingmagnetic fields

Sensor learns ambient background and stores settings in non-volatile memory

FlexPower technology driven off one lithium primary battery integrated into thehousing

Frequency Hopping Spread Spectrum (FHSS) technology and Time Division

Multiple Access (TDMA) control architecture combine to ensure reliable datadelivery within the unlicensed Industrial, Scientific, and Medical (ISM) frequencybands

Transceivers provide two-way communication between the Gateway and Node,including fully acknowledged data transmission

Lost RF links are detected and relevant outputs set to user-defined conditions

Sealed housing contains the battery, sensor, and antenna for a completelywireless solution

For additional information please refer to Banner Engineerings Web site.

Model FlexPower Frequency I/O

DX80N9X2S0P0Z03.6V dc Battery

900 MHz ISM Band Internal M-GAGE(no additional I/O points)DX80N2X2S0P0Z0 2.4 GHz ISM Band

Models

Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]


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OverviewThe M-GAGE sensor uses a passive sensing technology to detect large ferrous objects.The sensor measures the change in the Earths natural magnetic field (ambient magneticfield) caused by the introduction of a ferromagnetic object.

The M-GAGE provides a direct replacement for inductive loop systems and needs noexternal frequency box. Its unique design allows quick installation within a core hole.

For best performance, mount the sensor below-grade, in the center of the traffic lane. TheM-GAGE also may be mounted above-ground.

Theory of OperationThe sensor uses three mutually perpendicular magnetoresistive transducers, with eachtransducer detecting magnetic field changes along one axis. Incorporating three sensingelements produces maximum sensor sensitivity.

A ferrous object alters the local (ambient) magnetic field surrounding the object, as shownin Figure 1. The magnitude of this magnetic field change depends both on the object(size, shape, orientation, and composition) and on the ambient magnetic field strength

and orientation.During a simple programming procedure, the M-GAGE sensor measures the ambientmagnetic field. When a large ferrous object alters that magnetic field, the sensor detectsthe magnetic field changes (anomalies). When the degree of magnetic field changereaches the sensors threshold, the device reports a change of state.

Sensor Field of View and RangeThe sensor range depends upon three variables:

The local magnetic environment (including nearby ferrous material)

The magnetic properties of the object to be sensed

Sensor settings

The sensor detects changes in the ambient magnetic field in all directions. As with othersensors, the range depends upon the target. The strong disturbance of a large ferrousobject decreases as distance from the sensor increases; the magnitude and shape of thedisturbance depends upon the objects shape and content.

The sensor can be programmed to react to magnetic field disturbances of greater orlesser intensity, using three adjustments: baseline, threshold, and hysteresis.

Note: The sensor continues to sense a vehicle in its sensing field even when the vehicleis stopped.

Figure 1: Magnetic Detection Overview

Field A: Baseline magnetic field with slightdisturbances caused by permanent ferrous-metal objects within or near the sensor.

Field B: After a large object is introduced,the magnetic fi eld changes. The sensordetects the changes in the fields strengthand orientation between the ambient fieldand Field B. If the differential is gr eater thanthe sensitivity threshold, the device reportsa change of state.



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The M-GAGE value in I/O 1 is the deviationbetween the total measured magnetic field in theX, Y, and Z axes and the stored baseline.

The lowest significant bit (LSB) indicates thediscrete on and off value, within the thresholdand hysteresis. For example, if the M-GAGEthreshold is set to 100, any value returnedfrom the M-GAGE above 100 is equivalent to adiscrete ON and the lowest significant bit will beset to 1.

There are sixteen Modbus holding registersfor each device. Calculate the holding registernumber for each device using the equation:

Register number = I/O# + (Node# 16).

Since the Gateway is always Node 0, theGateways holding registers are registers 1through 16 while registers for Node 1 are 17through 32.

Using the equation, the register number for I/Opoint 15 for Node 7 is 127.

I/OPoint

GatewayModbusHoldingRegister

NodeModbus

Register

DX80M-GAGE FLEX(Node)

1 1 1 + (Node# 16) M-GAGE

2 2 2 + (Node# 16)

3 3 3 + (Node# 16)

4 4 4 + (Node# 16)

5 5 5 + (Node# 16)

6 6 6 + (Node# 16)

7 7 7 + (Node# 16) Reserved

8 8 8 + (Node# 16) Device Message

9 9 9 + (Node# 16)

10 10 10 + (Node# 16)

11 11 11 + (Node# 16)

12 12 12 + (Node# 16)

13 13 13 + (Node# 16)

14 14 14 + (Node# 16) Baseline Command

15 15 15 + (Node# 16) Control Message

16 16 16 + (Node# 16) Reserved

Modbus Register Block

Configuration

All wireless M-GAGE configuration is per formed using the Web Configurator and/or Modbus commands. The two sensor parameters arethe baseline magnetic field level and sensing thresholds.

BaselineFor a host-connected system, set the baseline magnetic field by writing to a Modbus register. Sending the value of 4096 (0x1000) to theNodes I/O point 15 (Control Message) triggers the M-GAGE to read the existing magnetic field as the new baseline.

For non-host connected systems, use the special M-GAGE Gateway to set the baseline. The inputs of the M-GAGE Gateway aremapped to the M-GAGE Nodes I/O point 14. Activating the Gateways input triggers the M-GAGE to use the existing magnetic field asthe new baseline.

Threshold and Hysteresis

The threshold is the value representing the ON point of the device. Hysteresis is the amount below the threshold that establishes thedevices OFF position. The M-GAGE Nodes threshold and hysteresis ranges are 0 to 65,535.

To determine the threshold, take M-GAGE readings of the test objects at the distance they are likely to be from the sensor. For exampleif a car reads 100, a bicycle 15, and a truck reads 200, setting the threshold to 150 will detect only trucks of a specific size. The factorydefault threshold setting is 100 and default hysteresis is 30 (sensor detects an off condition at threshold minus hysteresis, or 100 - 30 =70). Magnetic field fluctuations vary based upon the amount of ferrous metal present and the distance from the sensor.

Set the threshold and hysteresis using the Web Configurator or Modbus commands.



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Parameter Configuration using Modbus RegistersThe Modbus holding registers 7, 15, and 16 are used to change device I/O parameters. At the device to be updated, send theappropriate control code and parameter number to register 15 and send the parameter data to register 16. Once the transaction iscomplete, the system acknowledges the transaction by writing the control code and parameter number to the Nodes register 7.

Reg 7 Ack Control Code [15:8] Ack Parameter Number [7:0]Reg 15 Control Code [15:8] Parameter Number [7:0]

Reg 16 Write/Read Parameter Data [15:0]

Parameter Numbers - Modbus Register I/O 15Parameter numbers indicate which specific parameters are being changed.

Parameter Definition Description

8 Threshold - (bits 15:0) Disable: 0. Default: 100. The trigger point or threshold for an analog input. When an analog input isgreater than or equal to the active threshold value, a ON or 1 event is reported. If the analog inputdoes not reach the active threshold value, no event change is reported.

The parameter is a two byte value between 1 and 65535.

9 Hysteresis - (bits 15:0) Disable: 0 Default: 30. Works with the active threshold parameter to define when to disable eventreporting of an analog input. The hysteresis parameter defines how much below the active threshold

the input is required to be before the input is considered to be off.

The parameter is a two byte value between 1 and 65535.

Control Codes - Modbus Register I/O 15Use the parameter control codes to write to the specific I/O points of given Node.

Control Code ParameterNumber

Description

129 0x81 8, 9 Write I/O 1

161 0xA1 8, 9 Read I/O 1

ExampleTo change Node 5s M-GAGE threshold,use control code 129 (Write I/O 1, hex 81),parameter 8, sent to register 15 of Node5, which is Modbus register 15 + 5 16= 95 (hex 5E). Send the new parametersetting to Node 5s register 16. Eachparameter has specific values defined inthe Parameter Number table. The exampleModbus command (in hex) to write a value

of 640 would read something like thefollowing table.

Description Field Name Hex Value

Modbus Write Multiple

Registers

Function 10

Starting Register - 1 Starting Address Hi 00

Starting Address Lo 5E

Register Count Quantity of Registers Hi 00

Quantity of Registers Lo 02

Byte Count Byte Count 04

Parameter Control Code #1 Register Value Hi 81

Parameter Number #1 Register Value Lo 08

Write/Read ParameterData

#2 Register Value Hi 02

#2 Register Value Lo 80



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Supported Modbus Commands0 (0x0) Read Holding RegistersThe Read Holding Registers command reads the contents of a contiguous block of holding registers in a remote device. The requestspecifies the starting register address and the number of registers. Registers are addressed starting at zero; registers 1 through 16 areaddressed as 0 through 15.

The register data in the response message are packed as two bytes per register, with the binary contents right justified within each byte.For each register, the first byte contains the high order bits and the second byte contains the low order bits.

06 (0x06) Write Single Holding RegisterThe Write Single Holding Register command writes a single holding register in a remote device. The request specifies the address ofthe register to be written. Registers are addressed starting at zero; register 1 is addressed as 0. The normal response is an echo of therequest, returned after the register contents have been written.

16 (0x10) Write Multiple Holding registersThe Write Multiple Holding Registers command writes a block of contiguous registers (1 to approximately 120 registers) in a remotedevice. The requested written values are specified in the request data field. Data is packed as two bytes per register. The normalresponse returns the function code, starting address, and quantity of registers written.



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0

6 m (19') vehicle depicted

Top View

Side View

0.25 m(0.8')

M-GAGE

M-GAGE

1.2 m

(4')

-1.2 m

(-4')

2.4 m

(8')

-2.4 m

(-8')

3.7 m

(12')

4.9 m

(16')

6.1 m

(20')

7.3 m

(24')

2.5 m

(8.0')

2.0 m

(6.4')

1.5 m

(4.8')

1.0 m

(3.2')

0.5 m

(1.6')

0

Distance from Vehicle Side

M-GAGER

eadin

g

0

100

200

300

400

500

600

700

800(default)

OutputOFF

OutputON

Threshold

OutputOFF

Vehicle Front Bumper Position

M-GA

GER

eading

0.6 m(2')

-0.6 m(-2')

1.2 m(4')

-1.2 m(-4')

1.8 m(6')

-1.8 m(-6')

2.4 m

(8')

-2.4 m

(-8')

3.1 m(10')

3.7 m(12')

4.3 m(14')

4.9 m

(16')

5.5 m

(18')

6.1 m(20')

6.7 m

(22')

7.3 m

(24')0 m

0

100

200

300

400

500

600

(default)

OutputON

Threshold

Distancefrom vehicle

M-GAGE

M-GAGE

NOTE: Sensor orientationis not a factor.

Top View

Side View

Figure 2: Sensor mounted one meter (.2 ft) above the ground.

Figure : Sensor mounted 0.25 meters (0.8 ft) below the ground.

The charts within figures 2 and 3 indicate the excess gain for a typical car. Excess gain is the measure of extra signal detected by thesensor in excess of the level needed to detect change in the magnetic fields.

Figure 3 illustrates a typical vehicle passing over a sensor mounted underground. Note that the excess gain is greatest when the frontbumper is positioned such that the rear axle is directly over the M-GAGE.

The graphs represent the default sensitivity threshold levels (solid line) and half the default sensitivity (dotted line). As shown in thetable, the excess gain of the default sensitivity is twice that of the other sensitivity.

Configuration (cont)



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Installation

Determine the geometric center of thespace the vehicle would normally occupyand mark this location as the center of thehole.

Score the asphalt in an 8-inch squarearound the center point.

Using an 8-inch masonry or diamond bladein a circular saw, cut the marked square,leaving clean, sharp edges for patchinglater.

Using a jackhammer or hammer andchisel, break away the asphalt to exposethe aggregate underneath. Uncut asphaltin the corners of the square section do nothave to be removed.

Remove enough asphalt to allow the PVC

enclosure to pass through easily.Clear the aggregate to make a holeapproximately nine inches deep. Ensurethe holes bottom surface is level, flat, andtightly packed before continuing.

Place the PVC enclosure into the holeso that the top of the enclosure restsapproximately three inches below the

pavements original surface. Backfill tightlyaround the perimeter of the enclosure withfresh Class 5 aggregate before patchingthe pavement with asphalt hot-patch.

(Shown without PFC enclosure lid.)



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Installation (cont)

Good PlacementThe drawing at left shows the optimum

placement of M-GAGE sensors forvehicle detection. When the sensor ispositioned in the middle of the traffic lane,it can be configured to a threshold level todetect vehicles only in the lane of interest.This is known as lane separation, or notdetecting a vehicle in an adjacent lane.

A threshold level also aids the sensor invehicle separation detecting a breakbetween the back bumper of a leadingvehicle and the front bumper of the nextvehicle. With proper placement and

configuration, the M-GAGE can achievevehicle separation with distances of 24inches or less between vehicles.

Bad PlacementThe drawing at left depicts a potentialproblem installation. While mountingthe sensor at the side of a lane maybe successful, this mounting locationincreases the potential for problems. Toreliably detect a vehicle from the side, thesensor threshold must be increased to seeobjects further away in the lane of interest.

Unfortunately, this enables the sensorto also detect a lawn mower operatingbehind the sensor or vehicles in adjacentlanes, causing false counts.

Place the M-GAGE sensor at the edge ofa traffic lane only if there is no possibilityof the sensor detecting other objects. Toavoid detecting other objects, ensure novehicles will be within 10 feet of the sensoron the non-traffic side.



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SpecificationsMany of the DX80 parameters are configurable. The values in the tables represent factory defaults unless otherwise noted.

General

Power 3.6V dc low power optionMounting #10 or M5 (M5 hardware included)

M5 fasteners Max. Tightening Torque 0.56 N/m (5 in/lbf)

Case Material Polycarbonate

Weight 0.23 kg (0.50 lb.)

Indicators Two LED, bi-color

Switches Two Push Buttons

Radio 900 MHz 2.4 GHz

Range* 1000 feet, line of sight 1000 feet, line of sight

Frequency 902 to 928 MHz ISM band 2.4 to 2.4835 GHz ISM BandTransmit Power 21 dBm Conducted 18 dBm Conducted, 20 dBm EIRP

Spread Spectrum Technology FHSS (Frequency Hopping Spread Spectrum) FHSS (Frequency Hopping Spread Spectrum)

Link Timeout Defined by Gateway Defined by Gateway

* The range depends upon the environment and line of sight and is lower when buried.

M-GAGE

Input Internal Magnetometer

Sample Rate 250 milliseconds

Report Rate On Change of State

Ambient Temperature Effect Less than 0.5 milligauss/CSensing Range See figures 2 and 3

Environmental

Environmental Rating IEC IP67; NEMA 6

Operating Temperature* -40 to +85 C

Operating Humidity 95% max. relative (non-condensing)

Shock & Vibration IEC 68-2-6 and IEC 68-2-7Shock: 30g, 11 millisecond half sine wave, 18 shocksVibration: 0.5 mm p-p, 10-60 Hz

* Operating the devices at the maximum operating conditions for extended periods can shorten the life of the device.

Compliance

900 MHz Models FCC ID TGUDX80 - This device complies with FCC Part 15, Subpart C, 15.247

2. GHz Models FCC ID UE300DX80-2400 - This device complies with FCC Part 15, Subpart C, 15.247ETSI/EN: In accordance with EN 300 328: V1.7.1 (2006-05)


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