Programming via SIMATIC controller
8.6 Programming the Ident profile
SIMATIC RF650R/RF680R/RF685R
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Configuration Manual, 03/2018, C79000-G8976-C386-06
Ending the Repeat command with "INIT":
1.
Reset the "RPTCMD" input parameter and set the "INIT" input parameter.
①
If "RPTCMD" is not reset, the Repeat command is activated again on the reader. This
response triggers an error message because there is no command.
2.
The reader resets the "RPTACT" output parameter due to the "INIT" input parameter.
②
Ending the Repeat command with "SRESET":
1.
Reset the "RPTCMD" input parameter and set the "SRESET" input parameter.
①
2.
The "DONE" output parameter is set and the reader resets the "RPTACT" output
parameter.
②
Figure 8-24 Ending the Repeat command with "INIT"/"SRESET"
Data buffer
Permanent command repetition can lead to the data being transferred more slowly to the
Ident profile than new transponders are processed. In this case, the reader buffers the
results. The reader has a number of buffers for this. If the buffers are full, acknowledgments
are discarded and an error message to this effect is generated.
Table 8- 37 Readers that support command repetition
Device type
Number of buffers
(number of commands)
Max. user data that can be processed
with command repetition
RF680R/RF685R
250
1034 bytes × 250 = 258 500 bytes
Note
Restriction of command repetition
With unique EPC-IDs, the stored command is only repeated if different transponders are
brought into the antenna field. If the same transponder (identical EPC-ID) enters the antenna
field again and again, the transponder will not be processed again.