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4-5 Communications Test
Execute the communications test to check the radio wave environment at the working site.
Data (256 bytes) is communicated 256 times between the Antenna and Tag and the communications status is output. A total of
128 kbytes of data is communicated in two directions. A few seconds is required to execute this test. Communications are not retried.
Refer to Section 6-7-8.
(1)
(2)
(3)
(4)
(5)
(6)
(7)
Create a communications program at the host.
Enable the operation mode. (Disconnect the terminals +P and -P from each other. Refer to Section 6-1.)
Turn ON the power supply.
Put the Tag in front of the Antenna.
Send a communications test command (Section 6-7-8). If the Antenna is 00, the command is [STX]0080T0SU[ETX].
If the Antenna responds to the host, the communication between the host and Antenna was made successfully.
In the response [STX]8000T0000256@@[ETX], the radio wave environment value @@ will be between 0000 and 0256. If the value
is close to 0000, communications with the Tag are stable.
Example of response from Antenna:
*Radio wave environment is good.
[ STX] 8 0 0 0 T 0 0 0 0 2 5 6 0 0 0 0 [ ETX ]
Number of
Radio wave
communications environment value
*Radio wave environment is poor or there is no Tag is in the communications area.
[ STX] 8 0 0 0 T 0 0 0 0 2 5 6 0 2 5 6 [ ETX ]
Number of
Radio wave
communications environment value
Precaution for Correct Use
We recommend you to maintain a radio wave environment value of 50 or less.
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