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Rev Version 1.4.1
Rev Version 1.4.1
Zero Configures the scale of the analog input. This is the starting variable (in counts) when
the analog input is at the bottom or zero scale. The default is 8192, which equates
to the number of raw counts in the register when the input is at the zero or minimum
value (0 mA on the analog input).
Span
Configures the scale of the analog input. This is the number of counts per measured
value (for example, 1 mA, 1 V, or 1 Hz,). Default is 2048 which equates to 20 mA on
the analog input.
For example, the register range has a total range of 32768 counts with a total mA
range of 16 mA. Therefore, the Span is calculated by dividing the total range in counts
by the total range in mA, V, Hz, and so on (32768 / 16 = 2048).
Filter (sec) The filter time constant is the time the analog takes to settle on a step change of an
analog value. By default, inputs have a time constant of 5 seconds.
Lower Setpoint This parameter is the lower control point value that is used in conjunction with the
upper setpoint to turn on and off the analog setpoint register. The AI1 setpoint
location is at register 10002 and VSupply setpoint is located at register 10003.
Upper Setpoint This parameter is the upper control point value that is used in conjunction with the
lower setpoint to turn on and off the analog setpoint register.
Invert
Select this checkbox to allow the setpoint control logic to be inverted. The function
does not change, only the operation is inverted. For example, if the setpoint is
“on” in
its normal state, inverting the signal will mean the setpoint will be
“off “in the normal
state. Default state is not inverted (checkbox unselected).
Window
Selecting this option sets the set point operation to Window mode. Deselecting this
option sets the set point operation to Default mode.
•
Window Mode
—In this mode, if the analog value is inside the upper and lower
set points, the set point will be active (on,
“1”), and if the analog value is outside
of these set points the set point will be reset (off,
“0”).
•
Default Mode
—In this mode, the set point operates in default mode. If the
analog input is greater than the Upper Setpoint, the set point status will be active
(on, or
“1”). When the analog input is less than the Lower Setpoint the set point
will reset (off, or
“0”).
Save and Activate
Changes
NOTE The upper set point must always be higher than the lower set point.
Save to non-volatile memory and restart to activate changes.
