User Manual
Table Of Contents
- LRP76 Long Range Passive Reader/Writer
- Table of Contents
- Getting Started
- Mechanical Specifications
- Power and Electrical Interface
- Configuration Menu
- Standard RFID Interface
- 5.1 Introduction
- 5.2 Command Timeout Values
- 5.3 Address Blocks
- 5.4 ABx Error Codes
- 5.5 Command Descriptions
- 5.6 ABx Standard Commands
- 5.6.1 Command 4 (04 Hex): Tag Fill
- 5.6.2 Command 5 (05 Hex): Block Read
- 5.6.3 Command 6 (06 Hex): Block Write
- 5.6.4 Command 7 (07H): Read Tag Serial Number
- 5.6.5 Command 8 (08 Hex): Tag Search
- 5.6.6 Command D (0D Hex): Start/Stop Continuous Block Read
- 5.6.7 Command E (0EH) Read SN and Data
- 5.6.8 Command F (0FH) Start/Stop Continuous Read SN and Data
- 5.7 ABx Fast Commands
- 5.7.1 ABx Command Packet Structure
- 5.7.2 Command 4 (04 Hex): Tag Fill
- 5.7.3 Command 5 (05 Hex): Block Read
- 5.7.4 Command 6 (06 Hex): Block Write
- 5.7.5 Command 7 (07H): Read Tag Serial Number
- 5.7.6 Command 8 (08 Hex): Tag Search
- 5.7.7 Command D (0D Hex): Start/Stop Continuous Block Read
- 5.7.8 Command E (0EH) Read SN and Data
- 5.7.9 Command F (0FH) Start/Stop Continuous Read SN and Data
- Technical Specifications
- Models and Accessories
- ASCII Chart
Standard RFID Interface
38 LRP76 Long Range Passive Reader/Writer
5.7.3 Command 5 (05 Hex): Block Read
DESCRIPTION
Read a block of data from an RFID tag.
DISCUSSION
The RF Block Read command is used to read segments of data from
contiguous areas of tag memory. It is capable of transferring the entire
read/write address range of the tag to the host with one command.
The timeout value is given in 1 msec increments and can have a value
of 1EH to FFFEH. A timeout of 0 will return a syntax error.
The data read from the tag is returned in the LSB of the register, and
the MSB is always 00H.
Field Description
Header <STX><STX>
Command Size Packet length in bytes, excluding the header,
command size, checksum and terminator bytes.
Command 05H
Start Address 2-byte value for the tag address where the read will
start.
Read Length 2-byte value for the number of tag addresses to be
read.
Timeout 2-byte timeout value given in 1 ms units (1EH -
FFFEH)
Checksum optional checksum
Message
Te r mi n at o r
FFFFH