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Escort LRP2000 manual ABxS Command 95H SN Read, Abh, F3H

Models: LRP2000

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RFID Communications

6.4.22 ABxS Command 95H: SN Read

DESCRIPTION

Command 95H reads data from a specified RFID tag.

DISCUSSION

This command is used to read segments of data from contiguous areas of tag memory. It is capable of handling up to 48 bytes of data transferred to the host with one command if there is no tag Family ID. The timeout value is given in 1 ms increments and can have a value of 001EH to FFFEH (65,534 ms). When the timeout is set to 0, the controller returns a syntax error. The SN Read consists of a start address, length, and timeout value followed by a serial number. The eight-byte serial number of the target tag is specified. If the read length exceeds the last tag address, the controller will return error message in the status byte. It returns a response when done or when the timeout expires. The data read from the tag is returned in the LSB of the register, and the MSB is always 00H. A special error packet (AAH FFH) is sent if the timeout expires.

Field	Remarks
Command	Command number in hex preceded by AAH

Tag Family	Tag Family ID - 00H = all tags

Reserved	00H

Start Address	Tag address where the read will start

Read Length	Numbers of tag addresses to be read

Timeout	Timeout value given in 1 ms units (001EH - FFFEH)

Tag Serial Number	The 8-byte tag serial number

Message Terminator	FFFFH

Example

Reads four bytes of data from the tag specified by serial number starting at address 0001H. A timeout of 2 seconds (07D0H = 2000 x 1 ms increments) is set for the completion of the SN Read. The Family ID byte is set to zero.

Command from Host

MSB	LSB	Remarks
AAH	95H	Perform Command 95

00H	00H	Tag Family 00/Reserved

00H	01H	Start Address

00H	04H	Read Length

07H	D0H	2-second Timeout

00H	ABH	SN byte 0

00H	02H	SN byte 1

00H	F3H	SN byte 2

00H	05H	SN byte 3

00H	00H	SN byte 4

00H	01H	SN byte 5

00H	04H	SN byte 6

00H	E0H	SN byte 7

FFH	FFH	Message Terminator

Response from Controller

MSB	LSB	Remarks
AAH	95H	Command Echo

00H	30H	Data byte 1

00H	31H	Data byte 2

00H	32H	Data byte 3

00H	33H	Data byte 4

FFH	FFH	Message Terminator

85	LRP2000 Passive Reader/Writer

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Escort LRP2000 manual ABxS Command 95H SN Read, Abh, F3H

Contents

LRP2000 Passive Reader/Writer Escort Memory Systems Warranty Table of Contents Rfid Communications Iii Introduction Unpacking and InspectionFCC Compliance FCC Certifications Introduction CE Statement CE CertificationChanges and Modifications Dimensions LRP2000 DimensionsLRP2000 Mounting Hole Locations and Dimensions LRP2000-23 Antenna Dimensions LRP2000-26 Antenna Dimensions Installing the Antenna Installation1 LRP2000-26 Antenna Assembly Antenna EnvironmentGreen Orientation Dots Location Connectors Joining Plate Green Dots Joining PlateJoining Plate and Fasteners Completed LRP2000-26 Antenna Connectors and Wiring RF Connectors and Strain ReliefInternal Connectors Terminal Blocks Antenna Connectors Antenna CablingConnecting Single Antenna System Single Antenna System ConnectionsConnecting a Dual Antenna System Dual Antenna System ConnectionsJ8 Pin Number Interface J8 Signal Name DB9 Pin DB25 Pin Data Terminal BlocksRS232 Pinouts, J8 Terminal Block J10 COM1 RS422 J10 Pin Number Signal Name Polarity Description Power Supply WiringInput Power Pinout Power Supply LRP2000 Wire color Connector Pin NumberInput Power Supply Lugs RS232 Wiring RS422 Wiring and Termination Ethernet WiringDigital I/O Circuitry Connector Pin Signal Name Polarity Number InputsOutputs Terminal Signal Name Polarity Number Input from Sourcing Contact Input from NPN Sensor Sourcing Output Contact Sinking Output LED Driver Master/Slave Configuration Setting Jumper 32 on the MasterJ32 J34 Bank Position DIP Switch Settings on the SlaveMaster DIP Switch Settings OFFSetting Jumper J16 on the Slave Slave DIP Switch Settings1 COM1 Configuring the Serial InterfaceCOM1 Defaults 2 COM2COM2 Defaults COM2 ParametersBaud Rate 1200, 2400 9600, 19200 bps Download Baud Rate Interface Restore Defaults Digital Board DIP SwitchDip Switch Settings SettingsOptional Ethernet Interface Configuring the Ethernet Module for Network CommunicationDefault IP Address IgnoredMenu Loading Configuration LED Indicators Server PropertiesColor Meaning Error and Config LEDs 4 Simultaneous Flashes Flashing LED SignalsError LED 4 Flashes Error and Config LEDs 4 Alternating FlashesFaulty Network Connection No Dhcp Response Received How to Enter the Menu Configuration LRP2000 Standard PC Serial PortSet-Up Operating Parameters Set COM1 ParametersSet COM2 Parameters Set Operating Mode Operating ModeFraming Editing Checksum? 0 Disabled 1 Enabled Start Address Power up in Continuous Read Mode?Delay Between Identical Decodes LengthRestore Factory Defaults Set RF CommunicationReturn to Main Menu Download New Program Downloading DSP FirmwareExit to Operating Mode Command protocols ConventionsMulti-tag Commands ABx Command Set ListingsSingle Tag Commands User I/O CommandsCommand Parameters Multi-tag Command ParametersStart Continuous Read Single Tag Example Field Number Content BytesStandard ABx Protocol Multi-tag ExampleExample ABxS Command 04H Fill TagCommand from Host Field RemarksABxS Command 05H Read Response from ControllerABxS Command 06H Write ABxS Command 07H Read Tag Serial Number ACHE0H ABxS Command 08H Tag Search ABxS Command 0DH Stop/Start Continuous ReadBehavior Description Config BlinkCommand Response Field Remarks ANTABxS Command 14H Get Memory Status Field ContentResponse from controller ABxS Command 16H Write Family Code ABxS Command 17H Lock Family CodeDescription ABxS Command 82H SN Read All 6CH AAH FFHABxS Command 83H Start/Stop Continuous SN Read All 1EH0BH 4BH C5HFCH ABxS Command 84H Fill Tag All Response to a successful command follows this formABxS Command 85H Read All Termination Packet ABxS Command 86H Write All 3CH ABxS Command 87H Read Tag SN All6EH D2HABxS Command 88H Tag Search All ABxS Command 8BH Write Family Code All AAH 8BHABxS Command 8CH Lock Family Code All AAH 8CHABxS Command 8DH Start/Stop Continuous Read All AAH 8DHData response from controller ABxS Command 91H Memory Lock All Command is formatted as shown belowABxS Command 94H SN Fill 00H 01H SN byte ABxS Command 95H SN Read ABHF3H ABxS Command 96H SN Write A4H 0CH ABxS Command 10H Set OutputRemarks LSB Bit Output D Output C Output B Output a 0EHABxS Command 11H Input Status Remarks LSB Bit Input D Input C Input B Input aPacket Size Field ContentsABx Fast Protocol ChecksumABx Fast Single Tag Command Structure ABx Fast Multi-tag Command StructureABxF Command 04H Fill Tag Header 0202H Command SizeResponse from Controller Field Content ABxF Command 05H ReadCommand from Host Field Content AEHABxF Command 06H Write E7HABxF Command 07H Read Tag Serial Number EEHF8H ABxF Command 08H Tag Search F2HA3H ABxF Command 0DH Start/Stop Continuous Read 1DHF6H ABxF Command 14H Get Memory Status E1HF1H ABxF Command 16H Write Family Code E5HE8H ABxF Command 17H Lock Family Code ABxF Command 82H Read Data and SN All101 A6HCommand from Host Response from Controller Field Content 6FHABxF Command 83H Start/Stop Continuous SN Read All 1036AH 7BH105 ABxF Command 84H Fill All 106ABxF Command 85H Block Read All 107EBH C8HABxF Command 86H Block Write All 109ABxF Command 87H Read Tag SN All 1109BH F4HABxF Command 88H Tag Search All ETXABxF Command 8DH Stop/Start Continuous Read All 113ABxF Command 91H Memory Lock All 114ABxF Command 8BH Write Family Code All 115ABxF Command 8CH Lock Family Code All F7HABxF Command 94H SN Fill Response form Controller Field Content117 B0H 9DHABxF Command 95H SN Block Read 119120 ABxF Command 96H SN Block Write 1214DH Output LSB Bit Status ABxF Command 10H Set Output123 Output D Output C Output B Output a ByteABxF Command 11H Input Status 124125 EDHEAH ABx Ascii Protocol ABx Ascii Protocol Command StructureCommand Packet Structure ABx Ascii Protocol Response StructureCommand/Response Size Example Ascii Command, Fill Tag127 Command from Host Field Ascii Hex Ascii String Value STXResponse from Controller Field Ascii Hex Ascii String Value ABx Standard Error Codes ABx Error CodesMulti-tag Error Codes Error Code DescriptionField Bytes Contents ABx Fast Error CodesABx Ascii Error Codes Field Number of Ascii Contents CharactersMulti-tag Command Error Code 131Communication Mechanical SpecificationsElectrical EnvironmentalOptions AccessoriesAvailable Models Tags134 Decimal Hex Character135 DEL