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5-3
Section
Command and Response Frame Structure
73
5-3-1 Command List
Commands can be classified into five types.
1, 2, 3...
1. Communications Commands
The communications command is used for communications with ID Tags.
2. Communications Subcommands
The subcommand is used for the inquiry of the results or cancellation of
execution when the POLLING AUTO command is used.
3. Controller Control Commands
The Controller control command is used for interrupting communications
with ID Tags or resetting the Controller.
4. Host Commands
The host command is used for communications tests of the host and Con-
trollers.
5. Host Subcommands
The host subcommand is used for ACK/NACK control.
Command type
Command
code
Command name
Function
Communications
RD
READ
Reads memory data from a Tag.
command
WT
WRITE
Write data to the memory of a Tag.
AD
ADD
Adds the specified data to memory data in hexadecimal
and writes the results to the memory of a Tag.
SB
SUBTRACT
Subtracts the specified data from the memory data in
hexadecimal and writes the results to the memory of a
Tag.
PR
POLLING AUTO
Performs a single autoread using polling.
PW
POLLING
AUTOWRITE
Performs a single autowrite using polling.
MC
MEMORY CHECK
Compares check codes in Tag memory.
MK
MEMORY
CALCULATE
Calculates check codes in Tag memory.
WP
WRITE PROTECT
Sets and releases write protection for each page.
LK
LOCK
Sets locks on pages of Tag memory
Communications
PC
POLLING CHECK
Checks polling operation with the Controller.
subcommand
PE
POLLING END
Ends polling.
Controller control
ST
STOP
Ends communications with the ID Tag.
command
XZ
RESET
Resets the Controller after receiving the command.
MS
SWITCH SYNC
Switches the Controller’s synchronization setting.
Host command
TS
TEST
Sends the received data to the host.
Host subcommand
AK
ACK
Sends this command to the Controller if a proper
response for ACK/NACK control is possible.
NK
NACK
Sends this command to the Controller if proper
response for ACK/NACK control is impossible.
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