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
20 LRP75 Long Range Passive Reader/Writer
5.4.1 ABx Standard Error Format
ABxS error codes are returned in the LSB of the second register
passed to the PLC. The format of the error response is shown below.
A Block Write fail error message would appear as: AAFF 0006
FFFFH.
5.5 Command Descriptions
The LRP75 supports two forms of ABx RFID commands; ABx
Standard and ABx Fast.
The ABx Standard is a binary protocol, word (2-byte oriented) so that
the syntax table reports the Most Significant Byte (MSB) and the Least
Significant Byte (LSB). In serial transmission the MSB is transmitted
first. User data is passed only in the LSB meaning that one word is
required for each byte of user data.
ABX Fast is byte oriented and uses both MSB and LSB to pass user
data. This is more efficient as each work passes two bytes of user
data.
5.6 ABx Standard Commands
5.6.1 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. When Fill Length is set to 0, the LRP75 will write fill
Error Response from the LRP75
MSB LSB
AAH FFH
00H Error Code
FFH FFH