Download Lab-LINK for Windows User Manual

Lab-LINK for Windows User Manual
 AckDateTime Acked by User
Ex.
Reactor Temperature, 2005/01/02 10:20:05 too high, 2005/01/02 10:30:25 normal,
2005/01/02 10:21:04 Acked by User A
Note:  mean the text behind should be part of the previous line
Alarm Types
There are eight different types of alarm conditions:

Digital Alarm: Suitable for digital Tags. Can be further divided to two sub types D1 and D0.
D1 alarm occurs when Tag value is “1” and D0 alarm occurs when Tag value is “0”.

High/Low Alarm: Suitable for analog Tags. A high limit and a low limit can be defined. When
Tag value is greater than or equal to the high limit, High alarm occurs. If Tag value is smaller
than or equal to the low limit, Low alarm occurs.

HH/H/L/LL Alarm: Suitable for analog Tags. Similar to High/Low alarm but with a second set
of limits. When Tag value is greater than the high-high limit, HH alarm occurs. If Tag value is
smaller than the low-low limit, LL alarm occurs.

Rate of Change Alarm: Suitable for analog Tags. Alarm occurs when the speed of change
of alarm Tag value exceed a specified limit.

Deviation Alarm: Suitable for analog Tags. Based on a specified Base value, alarm occurs
when the different of the Base value and the alarm Tag value is greater than or equal to
the specified Deviation.

Timeout Alarm: Suitable for digital Tags. A Reference Tag is compared with the alarm Tag.
The alarm Tag value must change as the Reference Tag within a specified time limit.
Otherwise, alarm occurs. This type of alarm can be further divided into two subtypes: T0
and T1.
T0 alarm occurs if alarm Tag and the Reference Tag are at the same state after
the time limit. T1 alarm occurs if alarm Tag and the Reference Tag are at the opposite
state after the time limit. There is no automatic reset for Timeout alarm.

Trip Alarm: Suitable for digital Tags. A Reference Tag is compared with the alarm Tag. It is
further divided into three subtypes: X0, X1 and XC. X0 alarm occurs if the Reference Tag
is at the same state when the alarm Tag changes.
5-4
X0 alarm occurs if the Reference Tag