Rockwell Automation 42GNC_NF_NL_NP_NR_NU SmartSight DeviceNet PHOTOSWITCH Photoelectric Sensors User Manual

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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

OFF

Motion

Less than Preset

ALARM

Margin Unstable

No Motion

Preset Reached

PN--28114

10000022881 Ver 00

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