Banner EZ-ARRAY USB Serial Adapter - Manual (Page 30)

28 P/N 130426 Rev. C
Banner Engineering Corp. • Minneapolis, U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
A-GAGE EZ-ARRAY
Instruction Manual
PC Interface
User Interface Options
The user interface options control the Receiver user interface
display and push buttons.
• Display Orientation (Normal or Inverted) is used to invert
the display to right-reading when sensors are mounted “upside
down.” Note that the periods on the three seven-segment
indicators do not move when the display is inverted.
• Sensitivity Button field (Enabled or Disabled) is used to
enable or disable the Sensitivity button for security.
• Align-Blank Button field (Enabled or Disabled) is used to
enable or disable the Alignment-Blanking button for security.
5.8 Analog Output Config View
This view is used to individually set the parameters for each
of the analog outputs. Settings can be changed only when
the configuration type (in the System Config view) is set to
Advanced.
• Status determines whether that output is enabled or disabled.
When the analog output is disabled, the analog output will
source either 0 milliamps or 0 volts.
• Slope selects between positive and negative analog output
slope. The slope option allows the analog output to increase
as the measurement value increases, or to decrease as the
measurement value increases.
• Measurement assigns the desired measurement mode (Meas1
and Meas2, as configured in the System Config view) to each
output. (Select a negative slope to invert an output.)
• Zero Value is used to specify the analog output value when the
array goes clear. The options for Zero Value are hold (output
holds the last value before the light screen became clear),
minimum (provides the null or minimum value), or maximum
(provides the span or maximum value).
• Analog Filter Speed (fast, medium, or slow) allows averaging
of the analog output response to slow, and therefore smooth,
the response. The analog filter speed is defined as the number
of scans necessary for a step response to reach 95% of the final
value. These values are as follows:
Response
Speed
95% Step Response
(sensor scans)
Fast 1 scan
Medium 6 scans
Slow 24 scans
• Peak Detect (disabled, minimum or maximum) configures the
sensor to capture a minimum or maximum value and latch this
analog value until a reset has occurred (see Peak Detect Reset).
• Peak Detect Reset (auto or external communication)
specifies the method by which the analog output peak-detect is
re-triggered.
Auto: the analog output remains latched until the sensor array
goes clear and then detects another object.
External communication: By serially reading the analog latch
values (see Appendix A, Example A-8 for an example of peak
detect reset using external communication).
Null and Span values can be adjusted to vary the analog signal
levels. These values are factory-calibrated to represent 0 volts
(4 mA) and 10 volts (20 mA). The values represent a 12 bit
number that ranges from 0 to 4095.
NOTE: If reverting a configuration to the default values, first
record these factory-calibrated values, so they can later
be written to the sensor.
• NULL Output determines the minimum analog output value
(must be less than the Span value).
• SPAN Output determines the maximum analog output value
(must be higher than the Null value).
5.9 Discrete Output Config View
This view is used to individually set the parameters for each
of the discrete outputs. Settings can be changed only when
the configuration type (in the System Config view) is set to
Advanced.
• Status is used to enable or disable that discrete output.
• Polarity: The discrete outputs are independent and can be
set to either NPN (sinking current) or PNP (sourcing current),
regardless of the sensor model.
• Mode selects between normally closed and normally open for
each output, in effect, “inverting” the output. When Normally
Closed is selected, the output conducts when the sensor scan
value is outside of the selected limits. When Normally Open
is selected, the output conducts when the sensor scan value is
within the selected limits.
NOTE: If discrete output 2 Type is selected for Alarm/Health
Status, the options in the Mode field become Health or
Alarm; see “Type” below.
• Measurement ties the discrete output to one of the two
selected measurement modes (Meas1 or Meas2, as configured
in the System Config view).
• Type (discrete output 2 only) selects between measurement
or alarm functions. (Output 1 always is tied to a measurement
mode.) If Alarm/Health Status is selected, Output 2 will
change state whenever the System detects a sensor error
(such as a disconnected cable) or whenever the excess gain of
one or more beams becomes marginal, as follows: