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 31
5.6.8 Command F (0FH) Start/Stop Continuous Read
SN and Data
DESCRIPTION
When in Continuous Block Read SN and Data mode, the LRP75
sends Read SN and Data commands continuously to any tag in range
of the antenna. The value in the Start/Stop field controls the command
(start/stop).
DISCUSSION
When a tag enters the field of the antenna, the LRP75 reads the SN
and data, and then passes them to the host. The LRP75 continues to
read the tag, but will not send the same data to the host until the tag
has been out of the antenna’s range for a specified time period. This
period is called the Delay Between Identical Reads. It prevents
redundant data transmission when the LRP75 is in Continuous Read
SN and Data mode. The Delay Between Identical Reads can have an
integral value in seconds between 0 and 60. A value of 0 makes the
LRP75 continuously read any tag in the RF field and send the data to
the host.
The Start/Stop Continuous Read SN and Data command has a field to
start and stop continuous reading. To stop Continuous Read SN and
Data, issue the command with zero (0) in the start/stop byte.
If the LRP75 receives any other command from the host while in
continuous mode, an error (0FH) will be sent to the host.
NOTE:Other commands will NOT be performed when the LRP75 is in
continuous mode.
Field Description
Header AAH
Command Command number in hex
Start Address The tag address where the read will start
Read Length The number of tag addresses to be read
Delay Between
Identical Reads
Time period that the tag must be out of reading
range before the LRP75 will send the same data to
the host.
Start/Stop 01H starts continuous mode and 00H stops it.
Message
Terminator
FFFFH