Omron E3S-CR62/67 Manual

Operating Procedures: Photoelectric Sensors
29
E3M-V
Adjustment Steps
Registering (Teaching) Marks
Select the most appropriate teaching method in reference to the following descriptions.
Refer to the following descriptions for each teaching method. One-point teaching and two-point teaching can be controlled
remotely. ➜Refer to Remote Control Function on page 32.
Note: The reverse of the output described above (Background: ON, Mark: OFF) can be obtained by teaching using the background.
Continued on next page
Step Operation
1Install, wire, and turn ON the Sensor.
2Register (i.e., teach) the marks. ➜Refer to Registering Marks on this page to page 30.
3Adjust thresholds as required. ➜Refer to Adjusting Thresholds on page 31.
4Check that the mode selector switch is set to RUN.
Application
1 2 3
Detection of clear color differences
between the mark and the
background when the background
has a color pattern.
Detection of slight color differences
between the mark and background
when the background has no color
pattern.
Remote teaching without positioning
when the background has no color
pattern.
Teaching method 1One-point teaching 2Two-point teaching 1Automatic teaching
Output ON range The default value will be set, and the
output will turn ON at the mark.
The threshold will be set in the
middle between the mark and the
background, and the output will turn
ON at the mark.
The threshold will be set in the
middle between the mark and the
background, and the output will turn
ON at the mark (which has the
shortest passage time).
1One-point Teaching
Step Operation method Operation condition
1Set the mode selector switch to TEACH.
2Place the mark in the specified location, and press the SET Button.
The threshold indicators (red) will light.
3Set the mode selector switch to RUN.
The output will turn ON at the set mark.
2Two-point Teaching
Step Operation method Operation condition
1Set the mode selector switch to TEACH.
2Place the mark in the specified location, and press the SET Button.
The threshold indicators (red) will light.
LEVEL
OUT
TEACH
RUN
SET
ADJ
LEVEL
OUT
TEACH
RUN
SET
ADJ
Press
Mark
Sensor
Background
Threshold indicators (red) lit
LEVEL
OUT
TEACH
RUN
SET
ADJ
LEVEL
OUT
TEACH
RUN
SET
ADJ
Press
Threshold indicators (red) lit
Mark
Sensor
Background

Operating Procedures: Photoelectric Sensors
30
Note: These teaching steps are for turning output ON at the mark. The output can be set to turn On at the background and turn OFF at the mark by reversing the order
of teaching.
Note: Set input error of each signal pulse to within ±0.1 s.
Automatic Teaching
Example of Connection with Programmable Controller
Note: Connect the Sensor as shown in the figure above when connecting it to
a Programmable Controller.
Precautions for Using Automatic Teaching
In the following application conditions, incorrect judgment
may occur using automatic tuning. If this occurs, use one-
point teaching or two-point teaching.
•The background has a color pattern.
•There is a lot of variation in the samples.
•The surface has height differences or protrusions.
Step Operation method Operation condition
3
If the teaching is OK, move the mark and press the SET button when
the mark is at the position of the background.
•If the teaching is OK, the detection level indicators (green) will all
be lit.
•If the teaching fails, the threshold indicators (red) will all flash.
4
If the teaching is OK, the setting will be completed.
Set the mode selector switch to RUN.
If the teaching fails, perform the setting again from step 2.
3Automatic Teaching
Step Operation
1Check that the mode selector switch is set to either RUN or ADJUST.
2A pulse of 0.9 s (see note) will be input to the remote control input/output.
3
Teaching will be performed automatically when the mark is moved. (Teaching will be completed after the mark passes six times.)
•If teaching is OK, answer-back of 0.3 s will be output from the remote control input/output.
•If teaching fails, answer-back will not be output. In this case, perform the adjustment again using two-point teaching.
(Teaching will not be OK if there is no difference in light levels between the mark and the background.)
4If answer-back is detected, the setting will be completed. The output will turn ON at the mark (which has the shortest passage
time), and measurement will start.
LEVEL
OUT
TEACH
RUN
SET
ADJ
LEVEL
OUT
TEACH
RUN
SET
ADJ
LEVEL
OUT
TEACH
RUN
SET
ADJ
Press
NG
OK
Detection level indicators (green) lit
Threshold indicators (red)
flashing (with no difference
in light level)
Mark
Sensor
Background
1.8 s 0.3 s
Teaching completed.Sensing restarts.
0.9 s
Automatic
teaching Answer-back
ON
OFF
Remote control input/
answer-back output
Incident light
level
1’ 2’ 3’ 4’ 5’
12345
Teaching starts.
Dummy sampling
(1 mark)
Sampling
(5 marks)
Time
Time
Mark (short time)→Output ON
Threshold setting at best position
Background (long time)→Output OFF
I/O Unit
Programmable Controller
Output
Input
Sensor
Remote control
input/output
Registering Marks

Operating Procedures: Photoelectric Sensors
31
Adjusting Thresholds
Fine adjustment of thresholds can be performed after teaching.
Operation can be performed remotely.
➜Refer to Remote Control Function on the next page.
Detection Level Indicators
The control output will turn ON if the detection level exceeds the threshold level. The detection level display will depend on the
teaching method.
One-point Teaching
Two thresholds (i.e., above and below the mark) are set. The
indicators show the degree of match with the mark.
Two-point teaching and Automatic Teaching
A threshold is set in the middle between the mark (first
registration) and background (second registration). The
indicators show the level of excess gain between the mark
and the background.
Step Operation method Operation condition
1Set the mode selector switch to ADJUST.
2
In the ADJUST mode, specify the direction of adjustment using the
Up/Down selector switch. The threshold will transition each time the
SET Button is pressed.
(Two indicators will be lit at the same time for even-numbered
threshold levels.)
3After the setting is completed, set the mode selector switch to RUN.
LEVEL
OUT
TEACH
RUN
SET
ADJ
LEVEL
OUT
TEACH
RUN
SET
ADJ
LEVEL
OUT
TEACH
RUN
SET
ADJ
Press
Downward
selection
Upward
selection
Moving the threshold up
Moving the threshold down
Thresh-
old
indica-
tors
Thresh-
old 1 2 3 4 5 6 7 8 9 10 11 12 13
Detection level
Operation
indicator
Detection level
indicators
Threshold
Output OFF
Threshold
Mark
Threshold
Output OFF
Output ON
Detection level Operation
indicator
Detection level
indicators
Threshold
Mark
Threshold
Background
Output OFF
Output ON

Operating Procedures: Photoelectric Sensors
32
Remote Control Function (Bank Selection, Mark Registration, Threshold Adjustment)
In RUN mode and ADJUST mode, remote operation can be performed by inputting the signals in the following table for the remote
control input/answer-back output. There will be answer-back output for 0.3 s if the signal is correctly received.
Only one-point teaching can also be operated with manual input.
(Provide input for 1.5 s min.)
Timing Chart
*If consecutive signals are to be sent, allow an interval of at least 2.5 s after the
signal is input, as in the figure above.
Example of Ladder Programming
Control signals can be created using the example of ladder
programming shown in the following figure.
Control Signals
Note: Set input error of each signal pulse to within ±0.1 s
E3S-CR62/67
Sensitivity Adjustment
The Sensor and reflector can be moved horizontally and vertically to set them in the center of the illumination area of the red incident light indicator,
allowing the operator to check whether the green stability indicator lamp is lit.
Remote control
input/output
ON
2.5 s min. *
1.5 s
2.0 s
Input signal Next input
signal
Input judgment (1.8 s) Setting
changes.
Sensing restarts.
0.3 s
OFF
Sensor operation
Answer-back output only if processing of
the signal is properly completed.
05001
05002
00100
05000
END
TIM000
#XXXX
TIM001
#YYYY
TIM002
#ZZZZ
05000
00000 T000
05001
T000 T001
05002
T001 T002
05002
05000
TIM000, TIM001, TIM002 set values
(XXXX, YYYY, ZZZZ)
No.1: (0000, 0000, 0003)
No.2: (0000, 0000, 0006)
No.3: (0000, 0000, 0009)
No.4: (0000, 0000, 00012)
No.5: (0000, 0000, 00015)
No.6: (0003, 0003, 0003)
No.7: (0003, 0006, 0003)
No.8: (0003, 0009, 0003)
No.9: (0003, 0003, 0006)
No.10: (0003, 0006, 0006)
No.11: (0003, 0003, 0009)
No.12: (0006, 0003, 0003)
Input: 00000
Output: 00100
Others: Work bits
No. Control signal Function
1
Bank 1 selection
(Operation indicator OFF in TEACH
mode)
2Bank 2 selection
(Operation indicator lit in TEACH mode)
3Automatic teaching
4Two-point teaching (first and second)
5One-point teaching (input of 1.5 s min.
also possible)
6Threshold 1 selection
7Threshold 3 selection
8Threshold 5 selection
9Threshold 7 selection
10 Threshold 9 selection
11 Threshold 11 selection
12 Threshold 13 selection
0.3 s
ON
OFF
0.6 s
ON
OFF
0.9 s
ON
OFF
1.2 s
ON
OFF
1.5 s
ON
OFF
0.3 s 0.3 s 0.3 s
ON
OFF
0.3 s 0.6 s 0.3 s
ON
OFF
0.3 s 0.9 s 0.3 s
ON
OFF
0.3 s 0.3 s
0.6 s
ON
OFF
0.3 s 0.6 s0.6 s
ON
OFF
0.3 s 0.3 s
0.9 s
ON
OFF
0.3 s 0.3 s
0.6 s
ON
OFF
Sensing object Detection state Sensitivity adjuster Indicator status Adjustment procedure
Transparent
bottle or glass
plate
No sensing object
Turn the sensitivity adjuster from minimum
to maximum and set it at a point where the
incident light stabilizes.
Opaque object
Sensing object
or no sensing
object
If the object is larger than the lens
diameter, set the sensitivity control to the
maximum setting.If the object is the same
size or smaller, turn the sensitivity control
from minimum to maximum and set it at
point where the incident light stabilizes.
Min. Max. Stability
(green)
Light
(red)
ON ON
Min. Max.
Stability
(green)
Light
(red)
ON ON