User manual

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5 DEVICE STATUSES
5.2.1 Device classes
5.2.1.1 Analogue
Devices that fall into this category have their value interpreted according to ranges for OK, Pre-
alarm and Alarm. The boundaries for these ranges can be changed. Any value that is outside
these ranges will be interpreted as a fault.
5.2.1.2 Enumerating
The analogue values of these devices are assigned specifically. A list of values for OK, Pre-
alarm and Alarm can be assigned. These lists should be space separated (e.g. “10 20 30”). Any
value not in any list will be interpreted as a fault.
5.2.1.3 Binary
Binary devices use their analogue values to indicate a set of flags. No changes can be made to
the way these flags are interpreted. Loop Tester will interpret them according the device
specification.
5.2.2 Copying settings
Once a device has had its settings changed, those settings can be copied to similar and
identical devices. Identical devices would be those of the same type, e.g. copying the settings
of one optical detector to all other optical detectors, whereas a similar device would be one in
the same class, e.g. copying the settings of an ion detector to all devices in the analogue class.
5.3 Filters
When working with very large loops, it may not be possible to show all device icons on screen at
once. In this case, it is possible to filter the list of displayed icons according to their type (either
specific device types or by the more general types listed above) and/or by their status, as determined
by their current settings and analogue value. The impact on device visibility according to status is re-
evaluated upon a refresh of analogue values. For example, selecting “Alarm” would clear the display
of all devices to begin with, but triggering a call point with a key would cause it to appear the next
time its analogue value is refreshed. If the “illuminate visible” check box is checked, the test LED of
each device will be adjusted according to its currently visibility.