Omnitronix Data-Link DL100, User Manual

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Manual Rev. 1.02 Page 37
Chapter 5
Programming Data Alarms
5.1 - Introduction
The DL100 has the capability to monitor data received via serial port, check it for user-defined
alarm or alarm conditions, and make notifications if matches are made. In order to do this, the
unit must be configured with the following information:
•
Alarm fields which define what parts of incoming records to search
• Data alarm equations that define what data actually causes an alarm
•
Action definitions
The Data Alarm Settings menu can be found within the Alarm Definitions branch of the Setup
menu. Refer to Chapter 4 for more information on configuring each of the above. The following
sections in this chapter will teach by example how to create data alarm monitors. For further
information, contact Omnitronix technical support.
Alarm Families
The DL100 has the ability to monitor any port for up to 16 different data alarms. For greater
flexibility, Omnitronix has designed two separately configurable collections of 16 data alarms.
Each of these collections is referred to as a data alarm family in this manual. A port may only be
monitored by one family at a time, but it is possible to assign family 1 to one port while assigning
family 2 to another.
Note: During all examples in this chapter, it is assumed that the unit is configured to monitor incoming
data on serial port 1 with data alarm family 2. It is further assumed that at least one SNMP
manager or pager is configured for alarm notification.
5.2 - Inside the Equation
Arguably, the most important part to a data alarm definition is the equation. This section will
cover the process of creating an alarm equation. Look over the following example equations
before proceeding:
•
alarm_code = “L31”
•
ext >= “A 600” AND exit_code = “DN”
•
(alarm_code > “31337” OR exit_code = “H4x0r”) AND switch = “ 001.1.9*.**”
Take note of the following tips:
•
References to other fields are acceptable, as long as both fields are the same length. For
example, “d=c” is a valid equation if the fields that both ‘d’ and ‘c’ represent are two
characters long
• Variable names are case sensitive
•
Equation literals (the data contained within quotation marks) are case sensitive