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Using Alarms
Trigger
Condition
=
>
<
>=
<=
!=
7.
In the PLC/Controller Address frame, enter the PLC coil or register address. Or click the
PLC/Controller Address button
8.
In the reference address area, click the pull-down box to select the target PLC memory area. Use the
numeric keypad to enter the specific PLC memory address. Select the PLC Network Address (if
applicable) and HMI communications port. Click Enter to go back to prior dialog box.
9.
Click OK to go back to the main screen of BlueLeaf. To delete an Alarm Buzzer, click the Cancel Set
button.
*
When using the Local Alarm Buzzer and a Global Alarm Buzzer, the Alarm Buzzer will activate
and remain active if either condition is true. If a Local Alarm Buzzer is used, the Alarm Buzzer
will turn off if a new screen is displayed on the OIT, regardless of whether or not the Local
Alarm condition is still true.
Displaying Alarms using the Dynamic Message Object
Though the Dynamic Message object can be used to display any messages, it is particularly useful for displaying warning
messages and instructions that are tied to an alarm condition. Similar to the Alarm LED and Alarm Buzzer, you can
construct a dynamic message object that changes messages according to a PLC coil or register value.
Description
Equal condition
Greater than condition
Less than condition
Greater than or equal to
Less than or equal to
Not equal
to display the Edit PLC/Controller Address dialog box:
Example
4x1 = 5: if value in register 4x1 is equal to
5, activate LED.
4x1 > 5: if value in register 4x1 is greater
than 5, activate LED.
4x1 < 5: if value in register 4x1 is smaller
than 5, activate LED.
4x1 >= 5: if value in register 4x1 is greater
than or equal to 5, activate LED
4x1 <= 5: if value in register 4x1 is less than
or equal to 5, activate LED
4x1 != 5: if value in register 4x1 is not 5,
activate LED.
127
1010-0300, Rev 02
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