AEG ARE H9 HF User Manual page 38

7.6.5 Read last record
... „RL" ...
answer: STX, „record in ASCII" , „CRC in ASCII" , ETX
NAK = Error
The reader repeats the output of the record, that was transmitted with the
previous "RN" command. The position of the pointer remains unchanged ( as set
by the previous "RN" command ). This command is sent by the host only , if the
CRC from the last record gives a wrong result.
7.6.6 Set pointer to first empty EEPROM record
... „WP" ...
answer: ACK = executed
NAK = Error
Note: It is absolutely necessary, that this command is executed , before a load or
write command is given. Otherwise the position of the pointer is undefined.
Caution: stored records may be overwritten.
7.6.7 Write record
STX, „W" , „record in ASCII" , „CRC in ASCII" , ETX
answer: ACK = executed
NAK = Error
This command writes the record into the EEPROM memory, provided that
length, syntax, and CRC have been identified as true. After completion, the
pointer is incremented as well. Consequently at the next "W" command the new
record will be written into the next position.
7.6.8 Software version
... „SV" ...
answer: STX, „503" , „CRC in ASCII" , ETX
NAK = Error
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