User's Manual

5 OPERATION

HF80 Transponder Reader – HSMS, Release 1.3

S18F67: READ REQUEST UID BINARY (host -> reader, reply)

The host requests the subsystem indicated in TARGETID to read

information from the transponder indicated in UID. DATASEGB may

be used to indicate a specific section of data to be read.

DATALENGTH is used to limit the amount of data for that section.

S18F67 W

L,4

1. <TARGETID>

2. <UID>

3. <DATASEGB>

4. <DATALENGTH>

If DATASEGB and DATALENGTH are both omitted (zero length

items) then up to 200 bytes of the data area are requested. If only

DATALENGTH is omitted, then only one byte starting from

DATASEGB is requested.

S18F68: READ DATA UID BINARY (RDU) (reader -> host)

This message is used to return requested information from the

subsystem indicated in TARGETID and the transponder indicated in

UID, or to acknowledge the result of the request.

S18F68

L,3

1. <TARGETID>

2. <SSACK>

3. <DATAB>

If TARGETID is unknown, then a communication error (CE) occurs.