Owner's manual

3-16 Operating Characteristics
3.5.5 Event Reports
The Equipment has a fixed set of Events which can occur. Each Event is identified by a unique
Collection Event ID (CEID). The CEIDs are listed in Appendix B.
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.
S6F21 Host requests an Annotated Event Report associated with a Report ID.
3.5.6 Time Driven Trace
The Equipment supports Time Driven Trace initiated from the Host. The Host initializes a trace using
S2F23. The Equipment will send the data requested after the specified time interval has expired. The data
will be sent using the S6F1 (Trace Data Send) message.
The Equipment can handle several concurrent traces. The number of concurrent traces is determined by
the size of the trace data requested. The Equipment can support at least four concurrent traces to a
maximum size (i.e. all variables requested).
The Equipment allows Host definition of trace data to exceed the one-block limit when reported. That is,
the SEMI E5 standard states that the S6F1 (Trace Data Send) message is limited to a single SECS block;
but the Equipment will allow this point to be overlooked at the Host’s request. If the Host does define
trace data to be larger than one SECS block, then the Equipment will send the multiple blocks, not
preceded by the S6F5/S6F6 Inquire/Grant scenario.
3.5.7 Limits Monitoring
The Host can define limits for various Variables on the Equipment. When the appropriate limits
transitions occur, the Equipment will report this occurrence by sending an event to the Host (if the event
is enabled). The Host may define limits for a particular Variable through the S2F45 (Define Variable
Limit Attributes). Through this message, the Host may define up to seven limits for each eligible
Variable. For each limit (LIMITID), the Host defines an UPPERDB and a LOWERDB. The Equipment
generates events when a transition across these boundaries occurs. The Host may set the rate at which the
Equipment polls the Variables to determine if a limit has been crossed by setting the
GEMLIMITSDELAY variable (VID 60).