Rockwell Automation 42GNC_NF_NL_NP_NR_NU SmartSight DeviceNet PHOTOSWITCH Photoelectric Sensors - Manual (Page 4)

4
Configuration
After securing the sensor to a stable surface or support and connecting to the network, it will be necessary
to configure some of the parameters using a suitable network configuration tool such as the Rockwell RS
Networx. For remote configuration the DeviceView Handheld Configurator (193--DNCT) is available. Note
that the node address setting can be set locally using the two switches located on the user interface panel.
The address can also be configured over the network.
Self-Teach Operation
SmartSight DeviceNet photoelectric sensors provide self-teach operation for learning the application
presented to it. In essence, it automatically adjusts its sensitivity level to help distinguish between the target
and the background. This feature eliminates the need to manually adjust a sensitivity potentiometer as
found on the earlier DeviceNet 9000 photoelectric sensor. The self-teach can be accomplished either locally
or over the network.
Local Self-Teach
1. Open the top cover of the user interface panel and locate the LRN pushbutton.
2. Press the LRN pushbutton for five seconds to enter the Learn mode. The bi-colored LED will alternate
red/green/red to indicate that this mode is active.
3. To learn condition #1 (background or target), press and release the LRN pushbutton quickly. The Yellow
LED will turn ON.
4. To learn condition #2 (opposite of condition #1), press and release the LRN pushbutton quickly. If the
learn was successful, the yellow LED will turn off then on again. If the sensor was unable to learn the
application, then go to number 6.
5. The sensor will automatically exit the Learn mode and is now ready for operation.
6. If the sensor was unable to establish sufficient contrast difference between the condition #1 and #2
(background and target), the Red LED will turn ON indicating a Learn failure. Try the Learn process
again.
7. If, after a second attempt, the sensor is still unable to learn the application, it indicates that there is
insufficient contrast in the application. Retry the Learn operation using RS Networx as it may be possible
to learn the application by manually setting the sensitivity level over the network.
Remote Self-Teach
Using RS Networx, it is possible to enter the Learn mode to teach the sensor. This process is similar to that
described for the local self-teach and is supplemented with extensive help functions.
ATTENTION: In most retroreflective, polarized retroreflective, and
transmitted beam applications, it is not necessary to
make any sensitivity level adjustments.
Due to the detection method, adjustments may be
required for diffuse sense modes.
Features
Sensor Output Operation Light/dark operate
Timers On, off, motion
Counters One (1) counter
Diagnostics
Diagnostic mode
Diagnostic margin
Motion detection
Margin Analog value
Teach Function Low contrast/sensitivity
Diagnostic Operation
The SmartSight DeviceNet photoelectric sensor provides two independent diagnostic outputs to indicate an
unstable sensing condition. These two diagnostic outputs may be configured to operate in one of two
possible modes. The first, static, is designed for web sensing or other applications in which an immediate
diagnostic output is required. The dynamic operating mode is useful in repetitive applications where targets
are constantly moving into and out of the sensors field of view. In this mode, the output bit will only be
triggered after detection of seven successive “unstable” signals. This prevents “false triggering” caused by
the leading and trailing edges of the target.
A third diagnostic output bit is also provided. This output will be activated when either the Margin 1 or
Margin 2 diagnostic, or the Motion Detect preset values is reached.
Data Byte 1
Bit 0 Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7
Sensor Output Diagnostic Diagnostic Margin 2x Diagnostic Margin 3x Motion Output Counter Output Not Used Not Used
0 OFF OK OK OK Motion Less than Preset
1 ON ALARM Margin Unstable Margin Unstable No Motion Preset Reached
PN--28114
10000022881 Ver 00
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