User's Manual

RS232-Transponder Reader
(SECS1-Protocol), Release 0.3 Draft Page 77 of 91
2000-09-29
ID: ID000093
9.6 Subsystem Control and Data
9.6.1 S18F1: READ ATTRIBUTE REQUEST (RAR) (host -> reader, reply)
This message requests the current values of specified attributes of the subsystem
component indicated in TARGETID.
S18F1 W
L,2
1. A,8 <TARGETID>
2. L,n
1. <ATTRID
1
>
…
n. <ATTRID
n
>
If n=0 then all attributes of the target component are requested.
9.6.2 S18F2: READ ATTRIBUTE DATA (RAD) (reader -> host)
This message returns the current values of requested attributes and the current
status of the requested component indicated in TARGETID.
S18F2
L,4
1. A,8 <TARGETID>
2. A,2 <SSACK>
3. L,n
1. <ATTRVAL
1
>
…
n. <ATTRVAL
n
>
4. L,s
1. <STATUS
1
>
…
s. <STATUS
s
>
Both n=0 and s=0 if the target component is unknown.