User's Manual

Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology
120
6
RS 485/232 Communication Protocol
6.4.1.2. CMND Field Structure.
The command field is divided into several sections:
DIR Denotes string direction. In case of a command
from the LSC to the reader, it is equal to 0.
PK Denotes whether the command transmitted is
composed of packets or not. PK = 0 is for non-packet
commands. PK = 1 is for packet commands.
ERR this flag indicates an error.
ERR = 0 no error.
ERR = 1 Error. The first byte in the data field is the
error code.
CT Is the scenario command type. It describes the
Where:
command type, and whether it is in short or long form
00000 designates SHORT commands that stream
from the LCR to the Reader for MCU purposes.
00011 is for LONG commands.
This is the command code .
CC