Rockwell Automation 42EF RightSight DeviceNet Photoelectric Sensors - Manual (Page 4)

4
Configuration
RightSight DeviceNet photoelectric sensors interface directly to the network without the
need for a DeviceLink adaptor. After securing the sensor to a stable surface or
support, it will be necessary to configure some of the parameters shown on Table 2
using a suitable network configuration tool such as the Rockwell DeviceNet Manager.
For remote configuration the DeviceView Hand-Held Configurator (2707--DNC) is
available.
Diagnostic Operation
The RightSight 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.
In this mode, the output bits are triggered whenever an “unstable” signal is detected.
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 bits
are triggered only after detection of seven successive “unstable” signals. This prevents
“false triggering” caused by the leading and trailing edges of the target.
Table 2 specifies the range of margins defined as unstable for each of the two outputs,
Margin Diagnostic 1 and Margin Diagnostic 2. 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.
ON
OFF
INSTABILITY
RANGE
1.5:1
0.7:1
1:1
CONDITION 1 CONDITION 2
OUTPUT BIT
DIAGNOSTIC
MARGIN 1
MARGIN 2
DYNAMIC
MODE
2:1
When operating in static mode margin output 1 and 2 will trip when input signal level falls inside preset threshold.
7 INPUTS TRIP
DIAGNOSTIC OUTPUT
INPUT SIGNAL
LEVEL
Table 1. LED Function
Label Color State Status
Output Yellow ON Target detected
Margin Orange
OFF Margin < 2.0
ON Margin >2.0
Status Red/Green
OFF Sensor not powered
Green ON Steady Sensor active and allocated by master
Green Flashing Sensor active but not allocated by master
Red Flashing Minor correctable fault (baud rate)
Red ON Steady Major fault (possible duplicate address)
Table 2. Configuration Parameters
Parameter Type Options Default
Light Source Detected R Detected, not detected
Operate Mode R,W Light or dark operate Light operate
Sensor Output R Bit 0: 0=output OFF, 1=output ON
Margin LED R 0=margin < 2.0, 1=margin >2.0
Diagnostic Mode R,W Dynamic or static Dynamic
Margin Diagnostic 1 R Bit 2: 0=margin OK, 1= margin unstable (Fixed at 0.7 to 1.5)
Margin Diagnostic 2 R Bit 3: 0=margin OK, 1= margin unstable (Fixed at 0.7 to 2.0)
Diagnostic R Bit 1: 0=OK, 1=alarm (tied to margin and motion detect)
On-Delay Timer Enabled R,W Disabled or on-delay Disabled
On-Delay Timer Timebase R,W 1ms or 10ms 1ms
On-Delay Timer Preset R,W 0 to 65,535ms 0ms
On-Delay Timer Elapsed Time R —
Off-Delay Timer or One-shot Enabled R,W Disabled, One-shot, Off-delay Disabled
Off-Delay Timer or One-shot Timebase R,W 1ms or 10ms 1ms
Off-Delay Timer or One-shot Preset R,W 0 to 65,535ms 0ms
Off-Delay Timer or One-shot Elapsed Time R,W —
Up Counter Enabled R,W Disabled or Up Counter Disabled
Counter Preset R,W 0 to 65,535 counts 0 counts
Counter Value R —
Counter Output R Bit 5: 0=value less than preset, 1=value equal preset
No Motion Detect R Bit 4: 0=motion, 1= no motion
No Motion Detect Preset R,W 0 to 65,535ms 0ms
Autobaud R,W Enable or disable Enable
Configuration Consistency Value R — 0
Communication Rate R,W 125, 250, 500kB 125kb
Node Addressk R,W 0 to 63 63
Operating Protocol R,W COS or strobing COS
Publication PA--9901(B)
July 2001
Printed in USA
PHOTOSWITCHR is a registered trademark of Rockwell Automation.
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