User's Manual

Brooks Automation
260301 Revision A 73
ATR60LF RFID Reader CAN Bus 7 Operation
Product Manual 7.5 Operation of the SECS Protocol
S18F7: WRITE DATA REQUEST (WDR) (H ->E)
This message requests to write data to the subsystem component indicated
in the TARGETID. DATASEG may be used to indicate a specific section of the
data area to be written or overwritten.
S18F7 W
L,4
<TARGETID>
<DATASEG>
<DATALENGTH
<DATA>
If DATASEG and DATALENGTH are both omitted (zero length items), up to
200 bytes in the data area are to be overwritten. If only DATALENGTH is
omitted or if DATALENGTH has a value of zero, then all data within the
indicated section is to be written.
If DATASEG is omitted (zero length items), the value of DATALENGTH sets
the length of data that is to be written. If the length of the data that is to be
written is longer than the value of DATALENGTH, a communication error
(CE) occurs.
S18F8: WRITE DATA ACKNOWLEDGE (WDA) (E -> H)
This message acknowledges the success or failure of writing data to the
subsystem indicated in the TARGETID.
S18F8
L,3
<TARGETID>
<SSACK>
L,s
<STATUS1>
…
<STATUSs>
If the TARGETID is unknown, a communication error (CE) occurs.
Exceptions:
 This command is not allowed for single-page TIRIS transponders.
 If the TargetID is invalid, no statuses are sent (list of zero).