Linear Products Knowledge Base

Select Setup: Alarms: Temperature Inputs.

On this page you can:

1. Create, change, or delete temperature inputs.
2. Enable or disable the input.
3. Specify maximum and minimum temperatures.
4. Select events for temperature alarm states.

To add a temperature input to the system configuration:

1. Click the addlink under the Namedrop-down list.

Note: If you are adding an input that is substantially similar to a current one, select the current temperature input from the drop-down and click clone. Enter a Name for the new input and make the needed changes. This method will save time.

2. Enter a name for the input in the Nametext box.
3. Be sure that the Enabledcheckbox to the right of the Name text box is checked.
4. Inputs that are not defined as part of an Input Group will not arm. You must either check the Always Armed box or create an input group and assign a time spec to the group, during which the inputs in the group are armed.
5. Enter a Descriptionf or this input.
6. Select from the Network Node drop-down list the node that this input is wired to.
7. Select from the Expansion Slot drop-down list the slot number of the board that the input is connected to.
8. Select from the Position drop-down list the connector position number that the input is connected to.

9. Enter the Max Temperature and Min Temperature. Temperatures exceeding these boundaries will generate an alarm state.

Note: You can set the temperature scale to Celsius or Fahrenheit on the Network Controller page. Internally the temperature data is stored and calculated using whole integers and the Celsius scale. This may result in temperatures entered in Fahrenheit being rounded to the nearest whole degree Celsius. For example, setting Max Temperature to 99 F will display as 98.6 F (37 C).

Note 2: The default and highest maximum temperature is 125 C. The default and lowest minimum temperature is -55 C. These defaults will not display.

10. Select from the Local Status Outputdrop-down, the output to fire if this temperature input exceeds either of the temperature limit boundaries.

You can, for example, wire an output to a blinking light at the location of each temperature input point. This would make it easy to find the temperature point that has entered an alarm state.

11. Select from the drop-downs a High Temp Event, and Low Temp Event. Check the Enabledcheck box.
12. Select from the Point Fault Event drop-down an event to execute if the temperature point is no longer communicating temperature data to the system.
13. Click Save.