50
Section 2
Set
ting th
e Ha
nd-
held Rea
d
er/Write
r
RFID System
User's Manual
Section 2
Communications Preparations
Setting the Operating Parameters
To optimize Hand-held Reader/Writer performance and reliability, operating parameters can be set to
match the application. The following parameters can be set: the inter-character monitoring time,
response delay time, auto command cancel time, write protection setting, and protocol.
Usually there will be no problem if the default settings are used, but the system can be optimized by
setting following parameters.
These parameters are stored in the internal memory of the Hand-held Reader/Writer and are saved
even if the power is turned OFF. When the internal settings are changed with the PARAMETER SET
command (SP), it is not necessary to reset the Hand-held Reader/Writer. The changes will be effective
immediately after the PARAMETER SET command is executed.
The PARAMETER SET command is also used to read the parameter settings. For details on the PARAMETER SET
,
Inter-character Monitoring Time
The Hand-held Reader/Writer recognizes a command when it receives the end code of a command
string that is sent from the host device. However, if for some reason the command is only partially
received, the Hand-held Reader/Writer will monitor for a fixed period of time after the last character in
the command string is received. If the complete command string is not received after the fixed period of
time has expired, a format error (end code: 14) will be returned.
Response Delay Time
The start of returning a response can be changed by setting the response delay time.
The actual time from when sending the command has been completed until returning the response is started is the
Hand-held Reader/Writer's internal processing time (minimum: 0 ms) plus the response delay time (a set value).
Setting range
0 to 9,999 (ms)
Note:
Default value: 99 (ms)
Setting range
0 to 99 (ms)
Note:
Default value: 20 (ms)
External inp
u
t
1 2
4 …
End
code
N
o additional data
Inter-character monitoring time
Response
3
Error code: 14
Host de
v
ice to Hand-held
Reader/
W
riter
Hand-held Reader/
W
riter
to host de
v
ice
External inp
u
t
Command
Response delay time
Response
Host de
v
ice to
Hand-held
Reader/
W
riter
Hand-held
Reader/
W
riter to host
Internal
processing time
