STRASBAUGH, INC.
7AF SECS/GEM Interface Ver. 1.9 February 19, 2002 5-19
Strasbaugh Confidential
5-19
5.4.9 Related Variables
The following table lists the variables (SV's, EC's, or DVVALS) which are relevant to data collection setup and
maintenance. This section does not list the variables which contain equipment-specific information. For a more complete
description of specific variables, see "Appendix A -- Variables".
Table 15 Limits Monitoring Related Variables
Variable Name VID
ECIDCHANGE 258
5.4.10 Related Events
The following lists the collection events (CEIDs) which are relevant to data collection. In addition to these, each variable
which is eligible for limits monitoring must have a specific collection event associated with it. For a more complete
description of these events, see "Appendix B -- Collection Events" or the description in this chapter.
Table 16 Limits Monitoring Related Collection Events
Collection Event CEID
EqConstChange 5008
5.5 Alarm Management
The 7AF has a fixed set of alarm conditions which can occur. Each alarm is identified by a unique Alarm ID (ALID), and
has an associated severity code (ALCD) and alarm text (ALTX). The possible alarms are shown in "Appendix C --
Alarms".
5.5.1 Alarm States
Each alarm (ALID) can be in either of two states: CLEAR (off) or SET (on). Several alarms can be SET simultaneously.
At power up, all Alarms are cleared.
5.5.2 Reporting
The 7AF reports alarms to the Host when they occur, without Host action, using the alarm report message S5F1 or
configurable option, depending on CONFIGALARMS (VID 46). The transition of an ALID from OFF to ON is referred to
as "going on" or "leading edge", and the transition from ON to OFF as "going off" or "trailing edge". The Equipment
reports both leading and trailing edge transitions.
The equipment has two CEIDs for each ALID, one for the "going on" transition and one for the "going off" transition. In
addition to the Alarm Report, the Equipment sends an Event Report if the CEID associated with the alarm change is
enabled. If the CEID is enabled and no report is defined, a "null" Event Report is sent. The event report for an alarm
transition is sent if it is enabled, even if the reporting for the alarm is disabled.
5.5.3 Enable/Disable
The Host can use S5F3 (Enable/Disable Alarms) to control which alarms the 7AF should report. Using S5F3, the Host
can specify for each ALID whether the Equipment should report that alarm when it occurs. When an alarm transition
occurs, if that ALID is enabled the Equipment will send an alarm report message to the Host. If the ALID is disabled, the
Equipment will not send the alarm message. The Host can use S2F37 to enable or disable the CEIDs associated with these
alarm transitions.
The 7AF saves Alarm Enable/Disable settings on a disk file. When the Equipment powers up, it will restore Alarm
Enable/Disable settings to the same condition they had at power off.
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