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Define a digital alarm, Configure the alarm and download to the controller – Rockwell Automation FactoryTalk Alarms and Events Quick Start User Manual

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FactoryTalk Alarms and Events System Configuration Guide

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Define a digital alarm

Digital tags are either on or off. They have states instead of limits. The alarm trigger
condition compares the value of the tag to the configured alarm state. An alarm can be
triggered if the digital alarm is in one of these two states:

„

the rung evaluation or input tag is equal to zero

„

the rung evaluation or input tag is not equal to zero

Configure the alarm and download to the controller

This example uses the ladder logic editor that comes with RSLogix 5000 to define a
digital alarm. You can also configure digital alarms in function blocks or structured
text.

Step 1: Start RSLogix 5000 and then create a new project

1. To run RSLogix 5000 v. 16 or later software, click Start, point to All Programs >

Rockwell Software > RSLogix 5000 Enterprise Series and then click
RSLogix 5000
.

2. On the File menu, click New to create a new project.

3. In the New Controller dialog box, enter information for the type of controller you

are using. Keep the default location in the Create-In field. For help with filling in
the dialog box, click Help.

4. In the Name field, type a name for the new controller. In the example above, we

used

West_Plant_Controller

.

If your FactoryTalk application does not include Logix5000 controllers, or if your
controllers are not programmed with the new alarm instructions included in RSLogix
5000 v. 16 or later, see Chapter 5, “Add an OPC Data Server for third-party
controllers” and Chapter 6, “Add a tag
-based alarm server for Logix5000, PLC-5,
SLC 500, or third-party controllers”.