Basler Electric DGC-2020 - Manual (Page 230)

BESTlogic ™ Plus Composition
There are three main groups of objects used for programming BESTlogicPlus. These groups are I/O,
Components, and Elements. For details on how these objects are used to program BESTlogicPlus, see
the paragraphs on Programming BESTlogicPlus.
I/O
This group contains Input Objects, Output Objects, Alarms, Pre-Alarms, Senders, and Logic Control
Relays. Table 5-1 lists the names and descriptions of the objects in the I/O group.
Table 5-1. I/O Group, Names and Descriptions
Name Description Symbol
Input Objects
Logic 0 Always false (Low).
Logic 1 Always true (High).
Physical Inputs
IN1 - IN16
True when Physical Input x is active.
Remote Inputs
IN17 - IN26
True when Remote Input x is active. (Available when
an optional CEM-2020 is connected.)
Virtual Inputs
VIN1 - VIN4
True when Virtual Input x is active.
Status Input
Alarm Silence
True when the Alarm Silence logic element is true or
the Alarm Silence button is pressed on the front
panel.
Status Input
Alternate
Frequency
Override
True when the Alternate Frequency Override logic
element is true.
Status Input
Analog
Expansion
Module
Analog Expansion Module Connected. True when an
optional AEM-2020 is connected to the DGC-2020.
Analog
Expansion
Module
Remote Analog
Inputs 1-8
True when Over 1, Over 2, Under 1, Under 2, or Out
of Range is configured as Status Only and the
threshold has been exceeded. (Over 1 shown.)
Analog
Expansion
Module
Remote Analog
Outputs 1-4
True when the analog output connection is open and
the Out of Range Alarm Configuration is set to Status
Only.
Analog
Expansion
Module
Remote RTD
Inputs 1-8
True when Over 1, Over 2, Under 1, Under 2, or Out
of Range is configured as Status Only and the
threshold has been exceeded. (Over 1 shown.)
Analog
Expansion
Module
Remote
Thermocouple
Inputs 1-2
True when Over 1, Over 2, Under 1, Under 2, or Out
of Range is configured as Status Only and the
threshold has been exceeded. (Over 1 shown.)
5-2 DGC-2020 BESTlogic ™ Plus Programmable Logic 9400200990 Rev X