Chapter 7. Node and Terminal Plug-ins
Vol. IV-7-92 Alcatel-Lucent
Procedure for Alarm I/O Configuration
1. From the Plug-Ins screen, select the required module.
2. Select the Alarm I/O tab.
3. Select the Port Layout required:
• The Node supports three options for input and output combinations.
• The Terminal supports one option.
4. For each input select the Active Condition:
• For an input this sets the condition required to trigger an alarm event. Active
- Low indicates an alarm will be triggered with a change from a high
(internal +5V source) when the input is grounded. Active - High will trigger
an alarm when a nominal +5V input is applied (> +2V).
• For an output this sets the active (alarm received) condition of the relay to
energized or de-energized.
5. Current Condition indicates the present alarm state of each input or output.
• If an input is set to active high, and no input is applied (open circuit) or a
+5V TTL voltage is applied, the current condition is high, and an alarm is
reported against that input. Similarly, if an input is set as active low and no
ground is applied to that input (or no 0V TTL), the current condition is
reported as high so no alarm is indicated.
Where an active condition and current condition are the same, low/low
or high/high, an alarm is reported.
• If an output is set to active de-energized and no alarm event(s) mapped to it,
its current condition is energized.
6. To commit the configuration, click Send.
Next Step
To configure alarm actions (mapping), go to 9500 MXC Node and Terminal
Alarm Actions on page 11-1.
For information on connector pinouts and I/O cable options, refer Appendix C.
To Next Page
Loading...
