Manual

SECS Message Detail 4-3
The components are:
SnFn The Stream and Function Codes, S1F1 for example.
W The W-Bit, if set. Omitted if not set. If the W-Bit is optional, it is
coded within brackets "[W]".
item An item that is formatted as described above.
. A period (.) ends the message definition.
For example, the S1F3 message might be described in SML as follows:
S1F3 W
<L
<U4 13>
<U4 7>
>.
4.2 S1F1 - Are You There
S1F1 W. * H<->E
The Host may send this message to the Equipment at any time.
The GES-1993 sends this message periodically as a "heartbeat" to determine if the
SECS link is operational.
The Equipment Constant ConfigConnect can be set to cause the Equipment to send
S1F1 instead of S1F13 for Connect Request.
4.3 S1F2 - On Line Data (Equipment to Host)
S1F2 * H<-E
<L
<A MDLN> * MDLN Model Number
<A SOFTREV> * SOFTREV Software Revision
>.
The Equipment reports its Model Number and Software Revision.
4.4 S1F2 - On Line Data (Host to Equipment)
S1F2 * H->E
<L> .