Owner's manual

SECS Message Detail 4-5

4.2.4 S1F3 - Selected Status Request

S1F3 W * H-> E

<U4 VID> * Variable ID

...

> .

The Host requests status from the Equipment. The Host sends the VIDs of interest. Several VIDs can be

specified if desired.

Normally, only VIDs of class SV (i.e. Status Variables) are used in this message. However, the

Equipment allows the Host to use any VID of class DV, EC, or SV.

If S1F3 contains a zero-length list, then the Equipment will report all variables of class SV, in order by

VID.

For compatibility with older Host implementations, the Equipment allows the following alternative form

for this message using an array format:

S1F4 W * H->E

<U4 VID...>.

4.2.5 S1F4 - Selected Status Data

S1F4 W * H<-E

<V> * Status Variable Value

...

> .

The Equipment returns the Variable Values in the order requested by S1F3. If any VID specified in S1F3

is invalid, the corresponding V in S1F4 has the following error format:

<L> * V for Invalid VID