Siemens SIMATIC RF650R Configuration Manual page 137

Ending the Repeat command with "SRESET":
1. Reset the "RPTCMD" input parameter and set the "SRESET" input parameter.
2. The "DONE" output parameter is set and the reader resets the "RPTACT" output
parameter.
Figure 7-24
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, no new data is
fetched by the Ident profile; in other words newly arriving transponders are no longer
processed.
Table 7- 36
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.
SIMATIC RF650R/RF680R/RF685R
Configuration Manual, 10/2015, C79000-G8976-C386-03
②
Ending the Repeat command with "INIT"/"SRESET"
Readers that support command repetition
Device type
RF680R/RF685R
Number of buffers
(number of commands)
250
Interface to the SIMATIC controller
7.7 Programming the Ident profile
Max. user data that can be processed
with command repetition
1034 bytes × 250 = 258 500 bytes
①
137