User Manual
Table Of Contents
- LRP75 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
- LRP75 Beta Connections
- Models and Accessories
- ASCII Chart
Standard RFID Interface
LRP75 Long Range Passive Reader/Writer 35
EXAMPLE
The following is a typical command using a checksum.
The summed values begin with the Command Size and end with the
timeout value. That sum, less overflow, is subtracted from FFH for the
checksum value.
Thus: 00 + 03 + 01 +07 + D0 = DB
FF - DB = 24H
5.7.2 Command 4 (04 Hex): Tag Fill
DESCRIPTION
Fill an RFID tag with a one byte value over multiple contiguous
addresses.
DISCUSSION
This command is commonly used to clear an RFID tag's memory. It
writes a one byte value repetitively across a specified range of tag
addresses.
The fill function requires one data value byte, a starting address, and a
fill length. It will then proceed to fill the tag with the data value byte,
starting at the specified start address for the specified number of
consecutive bytes.
Command from Host
Field Contents
Header
<STX><STX>
02H
02H
Command Size 00H
03H
Command Code 01H
Timeout 07H
D0H
Checksum 24H
Terminator <ETX> 03H
Sum these values to
calculate the checksum