User's Manual

COBALT UHF-SERIES CHAPTER 5: COMMAND PROTOCOLS
PAGE 45 OF 140
CHAPTER 5:
COMMAND PROTOCOLS
5.1 COMMAND PROTOCOLS OVERVIEW
In order to execute RFID commands properly, the Cobalt UHF and host computer
must be able to communicate using the same language. The language that is used to
communicate is referred to as the Command Protocol.
When an RFID command is issued, the host computer instructs the RFID controller to
perform a given task. After performing that task, the RFID controller will normally
reply back with a Command Response message indicating the status or results of the
attempted command. This response notifies the host as to whether the command
was successfully completed or if the RFID controller failed to complete the command.
The Cobalt RFID product line by Datalogic supports three basic command protocols:
CBx, ABx Fast and ABx Standard. To determine which command protocol to utilize
for the different versions of Cobalt UHF Series, please refer to the table below:
PRODUCT CBX ABX FAST ABX STANDARD
UHF-CNTL-232-02 X X
UHF-CNTL-IND-02 X
UHF-CNTL-485-02 X
Table 5-1: Command Protocol Matrix
NOTE: RS485-based RFID controllers are used in conjunction with Subnet16 Gateway
and Subnet16 Hub interface modules, which use the CBx Command Protocol.