Manual

3-22 Operating Characteristics
3.4.3 Host Requests Status
The Host can send S1F3 when the Equipment is On-Line to read Equipment
Constants from the GES-1993.
The Host can send S2F13 when the Equipment is On-Line to read Equipment
Constants from the GES-1993.
For this Equipment, S1F3 and S2F13 with a list of VIDs are essentially the same.
That is, either message can return Variables of any type. However, S1F3 with a
zero-length list will return only VIDs of type SV, and S2F13 with a zero-length list
will return only VIDs of type EC.
3.4.4 Setting Equipment Constants
The Equipment Operator can change the value for Equipment Constants. Once the
Operator has changed an EC value, the Equipment will note the EqConstChange
event . The VID for the changed EC will be reported to the Host in the variable
ECIDCHANGE.
Refer to [RefGWGEMUser] p 105 ‘Equipment Constants’.
3.4.5 Event Reports
The GES-1993 has a fixed set of Events which can occur. Each Event is identified
by a unique Collection Event ID (CEID). The CEIDs which exist are shown in
"Appendix B -- Collection Events".
When an event occurs, the equipment sends the appropriate S6F11 Event Report
message to the Host (if that particular event has been enabled). Event Reports are
defined by the Host (S2F33) and linked to a specific CEID (S2F35).
The Equipment allows the Host to enable and disable Event Reports using S2F37. If
the Host enables a CEID, for which no Event Report is defined, the Equipment will
send a "null" (no data) report when the event occurs.
The Host can "force" Event Reports on the Equipment using the following Event
Report Request messages:
S6F15 Host Requests an Event Report associated with a CEID.
S6F17 Host requests an Annotated Event Report associated with a CEID.
S6F19 Host requests an Event Report associated with a Report ID.