View and edit MDI information
Overview
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Purpose
Use this procedure to view and edit Miscellaneous Discrete Input (MDI) names.
General information
The system provides a number of in- and outputs that can be used to read the status of
external alarm points and to drive external devices. Applications could be: door
contacts and dedicated station alarm loops. These inputs and outputs are called
Miscellaneous Discretes.
The 1643 AM or 1643 AMS is equipped with four Miscellaneous Discrete Inputs
(MDIs) and four Miscellaneous Discrete Outputs (MDOs).
The function of the MDIs is to signal external status information. On activation of an
MDI an alarm is raised showing the MDI number and name tag.
The MDIs are floating with respect to system ground. Activation of an MDI requires
an external voltage in the range of 18-72 V. An MDI is considered active when
resistance between the external voltage source and input is less than 10 Ω. An MDI is
considered inactive when resistance between the external voltage source and input is
more than 500 kΩ.
Contents
Viewing and editing MDI information 5-52
Parameters for viewing or editing MDI information 5-54
Equipment provisioning
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365-312-807R7.2
Issue 4, May 2007
Alcatel-Lucent - Proprietary
See notice on first page
5-51
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