Micromod Micro-PWC: 53PW6000 MicroPWC Installation and Setup Manual - Manual (Page 14)

Micro-PWC
™ Installation & Setup Guide
4 Introduction
(Some utilities which are of use to both the configurer and the operator [e.g., CRT Print, System Help, User
Help, and so on] are discussed in both manuals.)
1.3.11 Historical Block Data Collection
The optional Historical Block Database is designed for the efficient collection of data from a large number
of instrument tag.atoms. Like the data collected in the Historical Database, the Historical Block data is
stored for use by other applications, such as Logging, Trending and Data Archiving. Configuration of this
item is discussed in the Micro-PWC Configuration Guide.
1.3.12 Process Alarms
A Process Alarm is generated when a process variable is in an abnormal condition. Process Alarms are
displayed in the top two lines of the Mini-Alarm window and in the Alarm Review display, and are accompa-
nied by audible alarms. Process Alarms are discussed in the Micro-PWC Operator's Manual.
1.3.13 Events
System Events occur when a problem or change of state is detected within the system, as opposed to
abnormal conditions, problems, or changes of state associated with the process which is being monitored.
System Event messages are displayed in the third line of the Mini-Alarm window, the Event Review dis-
play, and the Event Historian. Events are discussed in the Micro-PWC Operator's Manual.
1.3.14 Message Review
Operator Messages are used to provide the operator with information and instructions for performing
actions, and can be generated from both the instrument and from the Micro-PWC system. Operator Mes-
sages are displayed in the fourth line of the Mini-Alarm window and in the Message Review display, and
can be accompanied by an audible alarm. Message Review is discussed in the Micro-PWC Operator's
Manual.
1.3.15 Alarm Groups and External Alarm Annunciation
An Alarm Group is a list of tagname.atoms, each with an associated value, which are downloaded to the
instrument database; this action is triggered by the occurrence of alarm messages which pass through a
user-configurable filter. This feature can be used to trigger external alarm annunciators when the down-
loaded values are used to change the value of the Discrete Output (DO) modules in the instrument data-
base. See your system administrator for information on use of this feature at your site.
1.3.16 Printer Review
Messages which have been sent to a printer or to a file can be displayed using the Printer Review display.
Printer Review is discussed in the Micro-PWC Operator's Manual.
1.3.17 The @aGlance/IT Application Server interface
The @aGlance/IT server interface is an optional utility which provides a live data link between a node and
a variety of software applications resident on other distributed control systems, supervisory control sys-
tems, personal computers, and so on.
There are two aspects to @aGlance/IT Server configuration: external interface configuration and internal
interface configuration. The @aGlance/IT external interface configuration is used to identify tagnames and
attributes (atoms) in the Global Database, and is described in the Micro-PWC Configuration Guide.