Siemens SIMATIC Ident System Manual page 357

Transponders consist predominantly of logic, FRAM and/or EEPROM.
If a transponder moves into the transmission window of the reader, the necessary power for
all of the circuit components is generated and monitored by the power supply unit. The
pulse-coded information is prepared in such a way that it can be processed further as pure
digital signals. The handling of data, including check routines, is performed by the logic,
which also manages the various memories.
SIMATIC RF200
System Manual, 07/2015, J31069-D0227-U001-A9-7618
Glossary
357