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5.1.6.6 Modbus
The scaling of the channel value in Modbus communication.
5.1.6.7 Events
Events are frequently used for Alarm purposes. The events can be used to operate digital
outputs (DO), Timer, Totalizer, Counter or Report. There are maximum five events can be added to each
analog input.
Press “Add” to add new event and Press “Remove” to remove selected event
5.1.6.7.1 Type
There are various types of events are available for the user to select for job or alarm purpose.
They are listed as below.
5.1.6.7.1.1 H
It is high event. When the process value is higher than high limit, then the alarm or job
associated with this event is actuated.
5.1.6.7.1.2 L
It is low event. When the process value is lower than low limit, then the alarm or job associated
with this event is actuated.
5.1.6.7.1.3 HH
It is high high event. When the process value is higher than high high limit, then the alarm or job
associated with this event is actuated. This is another limit higher than high limit for double warning.
5.1.6.7.1.4 LL
It is low low event. When the process value is lower than low low limit, then the alarm or job
associated with this event is actuated. This is another limit lower than low limit for double warning.
5.1.6.7.1.5 Dev+
It is deviation+ event. This event will be triggered on the positive deviation of process value. The
job or alarm is activated when the process value is deviated by the value higher than set point from the
previous process value.
For example,
Set point =10
At 10.00.01 Hrs, Tag1=40
At 10.00.02 Hrs, Tag1 = 51 Then, job or alarm is activated
5.1.6.7.1.6 Dev-
It is deviation- event. This event will be triggered on the negative deviation of process value. The job or
alarm is activated when the process value is deviated by the value lower than set point from the previous
process value.
For example,
Set point =10
At 10.00.01 Hrs, Tag1=40
At 10.00.02 Hrs, Tag1 = 29 Then, job or alarm is activated.
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