Specifications

Utilities Utilities: an Overview
VisiLogic: Getting Started 73
Alarms
An Alarm
is an event that is
reported to the machine
operator via a set of built-in
displays.
The event is a change in the
Alarm’s Trigger condition,
which may be linked to either
a Boolean or a numeric value.
An Alarm can:
Show Alarm status
Report the event to the
machine operator
Provide instructions
Require operator action
Play an active role in the
conditions enabling the
running of the process
In VisiLogic, you use the Alarm Configuration utility to create Alarms and set
their features. The Ladder application determines when the Alarms are
displayed on the controller’s screen.
Vision controllers support Alarms according to the following table:
Vision Type
Number of Alarms
Number of Alarms in History
V570
128
254
V350
64
62
V130
16
14
Alarms may be divided into up to 16 groups, per application.
While the Alarms displays are on the screen, the PLC application
continues to run. This includes both the Ladder, including
subroutines, and the HMI application. This means that the
current HMI display, the one on the screen when the PLC enters
Alarms, may not be the same one displayed when the PLC exits
Alarms.