Digital Input Tags
Digital inputs represent incoming digital data values from equipment, and provide drawing methods that change color, appearance, or text to impart the value of the digital input and associated equipment.
A digital input tag can be a single bit digital input or a double bit digital input. For single bit digital inputs, there are two possible states. For digital inputs that use two address bits, there are four possible states.
Note: Digital inputs clamp raw data values to either zero or one on each input pin (yielding a result of 0, 1, 2, or 3 for pump status and digital status tags). Analog zero yields zero, while all other values yield 1. This is effective for analog values that have discrete states (e.g. line voltage can be read for on/off), but pure analog data (e.g. velocity) will only become false when the value drops below the sensitivity of the measuring device.
The digital input has the following characteristics:
Digital Input Tag Characteristics
Tag Browser Name: Digital Input
Database Table Name: DigitalInput
Type: Input/Output Tag
Tag Group Memberships: Digitals, Numeric, Trenders
Log Enabled Variables: Value
Native Drawing Methods: Digital Input Tag Drawing Methods
Digital Input Tag Type Properties: ID
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Digital Input Tag Type Properties: I/O
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Digital Input Tag Type Properties: Owner
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Digital Input Tag Type Properties: Merit
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Digital Input Tag Type Properties: Alarm
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Digital Input Tag Type Properties: Script
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