168 Overview
Trident Planning and Installation Guide
Overview
Indicators are lights on the front panel of each module that identify the state of each
module. Each module includes indicators that identify the general state of the
module and other indicators related to the function of the module.
The types of indicators include:
• Status indicators which identify the processing state of the module. Each
module includes a Pass, Fault, and Active indicator.
• A lock indicator which identifies whether the module is unlocked.
• Mode indicators which identify the current operating state of the controller.
(Only on MP Modules.)
• Field power and power load indicators which identify whether a power
problem has occurred. (Only on some I⁄O modules.)
• Communication indicators which identify the type of communication
occurring. (Only on MP and CM Modules.)
• Points indicators which identify whether the point is energized.
• Alarm indicators which identify alarm conditions for the controller. (Only
on MP Modules.)
Fault and Alarm Indicators
Fault indicators identify potentially serious problems with a module. Alarm
conditions identify abnormal field conditions such as loss of power and loss of
communication.
If a fault or alarm indicator is on, you should consult the appropriate section of this
chapter and take appropriate action. This action may include replacing a faulty
module or repairing a faulty circuit or device.
Identifying Fault and Alarm Conditions
You can identify alarm and fault conditions in the following ways:
• By examining the indicators on the front panel of each module and
consulting this chapter.
• By using the Diagnostic Panel in the TriStation application. For more
information, see the TriStation 1131 Developer’s Guide.
To Next Page
Loading...