Omron E8M - User manual


Pressure Sensor E8M
Four-channel Pressure Sensor
Offers Versatile Functions and High
Precision without Errors
The industry’s smallest pressure sensor,
compact, lightweight – ideal for robot
arms or other moving components
A highly sensitive minute-pressure
sensor model detects very small
differences in air pressure
Requires no wiring conduit – can be
located for sensing in small places
Simple display panel efficiently saves
space, but offers large LEDs
Easy sensitivity adjustment using the
teach function and channel-to-channel
copy function
Ordering Information
SENSOR
Type Pressure range description Part number
Minute differential pressure sensor Differential pressure from 0 to 0.145 psi
(0 to 1,000 Pa) between positive and
negative ports
E8M-A1
Positive pressure sensor 0 to 145 psi (0 to 1 MPa) E8M-10
Negative pressure sensor 0 to –14.6 psi (0 to –101 kPa) E8M-N0
CONTROLLER
Item Description Part number
Controller Optional for pressure sensors:
E8M-A1, E8M–10 and E8M-NO K3C-MP8-T1Z

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CONNECTOR CABLES (ORDER SEPARATELY)
Item Description Part number
Sensor connector cable 4-pin connector with 3-m cable
required for E8M-10 and E8M-NO
(Note: E8M-A1 does not require this cable.)
E89-M3
Replacement cable Connector for the E89-M3
Sensor Connector Cable.
(Note:This connector is provided with the E89-M3
cable. As a replacement connector, it can be
purchased separately.)
XS8A-0442
Connector cable for K3C Controller 7-pin connector with 2-m cable
(
required for K3C Controller) K32-MP2W
Specifications
RATINGS
Sensor
Item E8M-A1 E8M-10 E8M-N0
Supply voltage 12 VDC±10%
Current consumption 30 mA max.
Pressure type Differential pressure Gauge pressure
Applicable fluid Non-corrosive gas and non-flammable gas
Rated pressure range Differential pressure from
0 to 0.145 psi (0 to 1,000 Pa)
between positive and negative ports
0 to 145 psi (0 to 1 MPa) 0 to –14.6 psi
(0 to –101 kPa)
Withstand pressure Differential pressure from
0 to 0.36 psi (0 to 2,500 Pa)
between positive and negative ports
0 to 217.5 psi (1.5 MPa) 58 psi (400 kPa)
Accuracy ±3% FS max. ±5% FS max.
Linearity ±1% FS max.
Hysteresis ±1% FS max.
Output (linear output) Voltage output: 1 to 5 V with an output impedance of 1 kΩ
Protection circuit Reverse polarity connection, load short-circuiting
Ambient temperature Operating 0°C to 40°C (32°F to 104°F) with no icing
Storage –15°C to 50°C (5°F to 122°F) with no icing
Ambient humidity 35 to 85% (with no icing)
Pressure joint M5 female screw R (PT) 1/8 and M5 female
screw M5 male screw

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Controller
Item K3C-MP8-T1Z
Connectable pressure sensor E8M-A1
(differential pressure from
0 to 1,000 Pa between positive and
negative ports)
E8M-10
0 to 145 psi
(0 to 1 MPa)
E8M-N0
0 to -14.6 psi
(0 to –101 kPa)
E8CB-01C
0 to 14.2 psi
(0 to 98 kPa)
Supply voltage 24 VDC ±10%, ripple (p-p) 10% max.
Current consumption 200 mA max.
Sensor power supply 30 mA max. for 4 channels at 12 VDC±10%
Input Sensor input (through 4-pin
one-touch connector) Input voltage range: 1 to 5 VDC with an impedance of 1 MΩper channel
Output Comparative output
(2 outputs on channel 1 and a
single output each
on channels 2 to 4 through 7-pin
one-touch connector)
NPN open collector
Flow current: 30 mA max.
Applied voltage: 30 VDC max.
Residual voltage: 0.8 V max. with a flow current of 30 mA
0.4 V max. with a flow current of 16 mA
NO or NC (selectable) independent output in hysteresis or wind comparator mode
(selectable) on each channel
Indicators Measurement value LED indicator with a character height of 10.8 mm for 31/2digits for a single channel
selected
Message LED indicator with a character height of 10.8 mm for 31/2digits
Measurement and
setting channel LED indicator with a character height of 7.2 mm for 1 digit
Comparative output LED indicator (4 LED indicators for Output 1 and 1 LED indicator for Output 2 that are
lit when the output transistor is turned on)
Others LED indicator for connecting channel and unit display
Protection circuit Reverse polarity connection, load short-circuiting
Ambient temperature Operating 0°C to 50°C (32°F to 122°F) with no icing
Storage –10°C to 60°C (14°F to 140°F) with no icing
Ambient humidity 35 to 85% RH (with no icing)
Dimensions 48 x 48 x 63.7 mm; or: 1.89 x 1.89 x 2.51 inches (W x H x D) for panel mounting without
connectors

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CHARACTERISTICS
Sensor
Item E8M-A1 E8M-10 E8M-N0
Voltage influence ±3% FS max.
Temperature influence ±0.25% FS/°C max. ±0.12% FS/°C max.
Insulation resistance 100 MΩmin. at 500 VDC between current-carrying parts and case
Dielectric strength 1,000 VAC, 1 min
Vibration resistance 10 to 150 Hz, 0.75-mm single amplitude or 100 m/s2(approx. 10G) for 8 min for 4 times
each in X, Y, and Z directions
Shock resistance 300 m/s2(approx. 30G) for 3 times each in X, Y, and Z directions.
Enclosure rating IP50, IEC529
Material Pressure joint SUS303 SUS304
Case ABS Aluminum, resin
Cable 4-mm (0.16 inch) dia.,
4-conductor, vinyl-insulated
cord, standard length: 3 m
(9.84 ft)
(See Note.)
Weight Approx. 130 g (4.58 oz) Approx. 30 g (1.06 oz) Approx. 20 g (0.71 oz)
Note: Use the E89-M3, which is sold separately.
Controller
Item K3C-MP8-T1Z
Response speed 5 ms max. (with 4 channels used)
Set resolution ±0.1% FS max.
Display precision ±1% FS max.
Supply voltage influence ±1% FS max.
Temperature influence ±1% FS max.
Enclosure rating IP40 (IEC529)
Dielectric strength 1,000 VAC 1 min.
Insulation resistance 100 MΩmin. (500 VDC) between current-carrying parts and case
Vibration resistance 10 to 150 Hz, 0.75-mm single amplitude or 100 m/s2(approx. 10G) for 8 min for 4 times
each in X, Y, and Z directions
Shock resistance 300 m/s2(approx. 30G) for 3 times each in X, Y, and Z directions
Connecting method Power supply and output: 7-pin terminal. Sensor I/O: 4-pin connector
Weight Approx. 90 g (3.17 oz)

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En
g
ineerin
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Data
LINEAR OUTPUT VOLTAGE VS. PRESSURE (TYPICAL)
Linear output voltage (V)
Differential pressure (Pa) between
positive and negative ports
E8M-A1 E8M-10
Linear output voltage (V)
Pressure (kPa)
E8M-N0
Linear output voltage (V)
Pressure (kPa)
OUTPUT LINEARITY (TYPICAL)
Linearity deviation
Differential pressure (Pa) between
positive and negative ports
E8M-10
Linearity deviation
Pressure (kPa)
E8M-A1
Linearity deviation
Pressure (kPa)
E8M-N0

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LINEAR OUTPUT FLUCTUATION VS.
POWER (TYPICAL)
E8M-A1 E8M-10
Linear output fluctuation (% FS)
Voltage (V) Voltage (V)
Linear output fluctuation (% FS)
Pressure 0
Rated pressure
Pressure 0
Rated pressure
E8M-N0
Voltage (V)
Linear output fluctuation (% FS)
Pressure 0
Rated pressure
LINEAR OUTPUT FLUCTUATION VS.
TEMPERATURE (TYPICAL)
E8M-A1
Linear output fluctuation (% FS)
Temperature (°C)
Pressure 0
Rated pressure
E8M-10
Temperature (°C)
Linear output fluctuation (% FS)
Pressure 0
Rated pressure
E8M-N0
Temperature (°C)
Linear output fluctuation (% FS)
Pressure 0
Rated pressure

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Nomenclature
PRESSURE SENSOR CONTROLLER
1
2
3
4
5
14
13121110
6
7
8
9
K3C Controller
Display Panel
1. Numeric and Menu Display (Main Display)
Indicates measured values and menu settings.
2. Unit Indicator
Indicates the currently set unit used for sensing.
3. Sensor Indicator
Indicates the operation of Sensors connected to the K3C.
When the Sensors are in operation, corresponding indicators
are lit.
Sensors can be connected to channels 1 to 4. Channel 1 has
two outputs.
4. OUT1 Indicator
Lit when OUT1 is turned ON.
5. OUT2 Indicator
Lit when OUT2 is turned ON. Only channel 1 has OUT2.
6. ON-point Indicator
The ON-point value presently set is displayed in the main
display when the ON-point indicator is lit. (See
Output Con-
trol,
page 10. )
7. Channel Display
Displays the channel of a Sensor to be in operation or where
data is being set. Channels 1 through 4 are available.
8. OFF-point Indicator)
The OFF-point value presently set is displayed in the main
display when the OFF-point indicator is lit. (See
Output Con-
trol,
page 10.)
Operation Keys
9. CH
Used to select the channel of a Sensor to be in operation or
where menu items are set. A channel is selected in sequence
1 to 4 by repeatedly pressing the CH Key.
10. RST/ESC
Used to return to the previous menu. If the RST/ESC Key is
pressed right after a set value change, the new set value will
be canceled, and the display will return to the previous menu.
The Controller will be zero-reset, if the RST/ESC Key is
pressed for 1 s minimum.
11. TEACH
Used for teaching settings.
12. MENU
Used to select the measurement mode or set mode, to
change menu items in set mode, and to enter set values.
13. DISPLAY
Used to select the measurement value, ON-point, or OFF-
point display in measurement mode.
Set menu or set value display is selected in set mode.
14. UP/Down
Used to change the set values in set mode: The values in-
crease by pressing the Up ( ) Key and decrease by
pressing the Down ( ) Key.

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O
peration
OUTPUT CIRCUITS
Sensor
E8M-A1 E8M-10,
E8M-N0
Pressure
Sensor
main
circuit
Power
indicator
(green)
Brown
Pink
Black (linear output)
Load
Blue
Pressure
Sensor
main
circuit
Power
indicator
(green)
Brown
Pink
Black (linear output)
Load
Blue
Connector
+ V
0/5 V
0 V
Input
+ V
0/5 V
0 V
Input
Controller
Pressure
Controller
main
circuit
Connector
+ V
0 V
Note: The above colors indicate the conductor colors of the
K32-MP2W (power and output connector for K3C
Controller).
(brown)
(pink)
(orange)
(gray)
(white)
(black)
(blue)

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DISPLAYS OF SETTINGS AND MEASUREMENTS
Digital Display
The E8M displays alphanumeric characters, such as
measurement values and menu items, with 7-segment LEDs as
shown below:
Display Meaning
set ON-point and OFF-point Settings
kpa Unit (kPa)
wid Width
aUe Average
The following abbreviations are used for the digital display of the
Controller.
Abbreviation Meaning
SET Setting
UNT Unit
OPE Operation
SEN Sensor
PRT Protect
COP Copy
HYS Hysteresis
WID Width
AUT Auto
DSP Display
AVE Average
MODES
In addition to the measurement value display function, the K3C Controller has a variety of functions, including an external device control
function. These functions are available in four main modes, as described below. Characters in parentheses indicate the digital display
conditions. For the relationship among each mode and for switching methods, refer to the following figure.
Power on Measurement
mode
Basic setting
mode
Special
setting mode
Teaching
mode
1 s min.

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Measurement Mode
The K3C is in this mode when power is turned on. Normally, you will use the Controller in this mode.
Basic Setting Mode
ON-point or OFF-point value
settings and change
Measurement unit selection
Output type selection:
Normally open or normally
closed
Sensor type selection
Teaching Mode
Values can be set automatically using measurement values instead of key input.
Special Setting Mode
Key-protect function for
set value protection
Data copy function to copy
the data of channels
Original pressure
fluctuation compensation
setting
Hysteresis width
Window width setting
Measurement value
display refresh interval
setting
Number of measurement
times setting for
measurement value
averaging

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SETTINGS
The Controller in the pressure sensing operation mode
requires basic settings, such as Pressure Sensor type and
measurement unit settings as described in the procedure
below.
1. Turning On the Power
Make sure that the Sensors and the power supply to be used
are properly connected to the Controller. Then turn on the
K3C.
Four Pressure Sensors can be connected to the K3C. One
can be selected with the K3C for measurement value display.
CH1 to CH4 correspond to the four Pressure Sensors
respectively.
The K3C displays the measurement value of channel 1 right
after the K3C is turned on.
The measurement value
appears right after the
K3C is turned on.
The default unit is kPa.
The Sensor on channel 1 is in operation.
2. Channel Selection
Press the CH Key to select the channel to be used. A
channel is selected in the sequence 1 →2 →3 →4 by
repeatedly pressing the CH Key.
Press the CH Key.
The next channel is selected.
Channel 1 is selected right after the K3C is turned on. Select
the channel where the Sensor to be used is connected. After
the channel is selected, set the Sensor type and
measurement unit.
3. Sensor Type Selection
Press the MENU Key four times so that “SEN” will appear.
Press the MENU
Key four times. The display changes.
If the display does not change when the MENU Key is
pressed, the key-protect function may be enabled. Refer to
Key-protect Settings (page 17 in this data sheet) and disable
the key-protect function.
Select the Sensor type according to the object to be
detected.
These Sensor Types Are Available
Model Display
E8M-A1 –1
E8M-N0 –101
E8M-10 1000
Not connected ---
E8CB-01C 100
Press the DISPLAY Key once.
A Sensor type appears in the main display.
Press the DISPLAY
Key once. A preset Sensor type appears.
The sensor indicator for the selected Sensor type flashes.
Press the Up or Down Key to select the Sensor type
according to the Sensor to be used.
Press the Up or Down Key. The Sensor type changes.
After selecting the Sensor type, press the MENU Key once to
enter the Sensor type.
The main display will change to “SET.”
Press the MENU
Key once. The display changes to “SET.”
4. Measurement Unit Selection
Press the MENU Key once. The main display will change to
“UNT” from “SET.”
Press the MENU
Key once. The display changes to “UNT.”
Press the DISPLAY Key once.
A measurement unit will appear in the main display.
The LED display of the selected unit is lit.
Press the DISPLAY
Key once. Measurement unit appears.
Press the Up or Down Key to select the measurement unit to
be used.
The LED display of the selected unit is lit.
Press the Up or Down Key.
Note: Selectable measurement units vary with the Sensor type.
Any measurement unit that cannot be selected will be
skipped.

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After the measurement unit is selected, press the MENU Key to
enter the measurement unit.
The display will change to “OPE.”
Press the MENU
Key once. The display changes to
“OPE.”
Press the RST/ESC Key.
The measurement value will appear in a present setting. This
state is called the “measurement mode.”
Press the RST/ESC
Key once. The present measurement value appears.
The basic settings are complete.
Reference Table for Sensor Types and Availability of Measurement Units
Sensor type Pressure range Display unit
y
g
kpa (kPa) kgf (kgf/cm2)hg (mmHg) h2o (mmH2O) Uol (vol)
(See Note.)
E8M-N0 0 to –101 kPa Yes Yes Yes No Yes
E8M-10 0 to 1 MPa Yes Yes No No Yes
E8M-A1 0 to –1,000 Pa Yes No No Yes Yes
E8CB-01C 0 to 98 kPa Yes Yes No No Yes
Note: Select Uol for voltage display.
OUTPUT CONTROL
The K3C has an output according to the measured value. The output can be used to control external devices, such as valves and absorp-
tion systems.
To control an external device, a reference value must be set so that the output can be turned ON or OFF if the measurement value is
above or below the reference value.
The value turning the output ON is called the ON-point and the value turning the output OFF is called the OFF-point. The following is an
example of ON-point and OFF-point settings that apply when the Controller has a normally open output.
Normally Open Output
Hysteresis Mode Window Mode
Output
OFF set
value ON set value
Pressure
Output
ON set
value OFF set value
Pressure
Normally Closed Output
Hysteresis Mode Window Mode
Output
OFF set
value ON set value Pressure
Output
ON set
value OFF set value
Pressure
Select the channel where the data is to be set.
•A channel is selected in sequence by repeatedly pressing the
CH Key.
•Data can be set on each channel independently.
•Be sure that the channel to be set is correct.

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Basic Set Mode
The K3C is in measurement mode right after it is turned on.
Press the MENU Key once to change the mode to the basic setting mode. “SET” will appear in the main display. If the mode does not
change, the key-protect function may be enabled.
Measurement Mode Basic Set Mode
ON-point and OFF-point Settings
Set ON-points and OFF-points for each channel.
Note: The output method varies with the ON-point and OFF-point settings.
•The Controller will be in hysteresis mode if the ON-point set
value is larger than the OFF-point set value.
•The Controller will be in window mode if the OFF-point set
value is larger than the ON-point set value.
•The Controller will not be in ON/OFF operation if the ON-
point value is the same as the OFF-point set value.
1. Press the DISPLAY Key in basic setting mode with “SET” displayed so that the OUT1 indicator will flash and the ON-point indicator
will be lit.
Press the Up or Down Key to change the ON-point set value of OUT1.
2. Press the DISPLAY Key so that the OUT1 indicator will flash and the OFF-point indicator will be lit.
Press the Up or Down Key to change the OFF-point set value of OUT1.
3. Press the DISPLAY Key so that the OUT2 indicator will flash and the ON-point indicator will be lit.
Press the UP or Down Key to change the ON-point set value of OUT2.
4. Press the DISPLAY Key so that the OUT2 indicator will flash and the OFF-point indicator will be lit.
Press the UP or Down Key to change the OFF-point set value of OUT2.
5. The set values will be entered when the MENU Key is pressed and “UNT” will appear.
Note: 1. If the RST/ESC Key is pressed instead, the set values will not be entered, and “SET” will appear.
2. OUT2 is available to channel 1 only. Channels 2, 3, and 4 do not have an OUT2 indicator.
When the OUT1 settings are finished and the DISPLAY Key is pressed, OUT2 will be ready for setting for channel 1 only.

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Example 1: Channel 1
Output
Pressure
Output
Pressure
OUT 1 OUT 2
For a Sensor with a Pressure Range of Up to 1 MPa
Follow these steps to achieve the above settings:
Channel 1
ON-point of OUT1
Press the Up or Down Key
to change the set value.
Cancel
Enter
OFF-point of OUT2
Press the Up or Down Key
to change the set value.
OFF-point of OUT1
Press the Up or Down Key
to change the set value.
ON-point of OUT2
Press the Up or Down Key
to change the set value.
Example 2: Channel 2
Outpu
t
Pressure
For a Sensor with a Pressure Range of Up to–101 kPa.
Follow these steps to achieve the above settings:
Channels 2 to 4
Cancel Enter
ON-point of OUT1
Press the Up or Down Key
to change the set value.
OFF-point of OUT1
Press the Up or Down Key
to change the set value.

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OUTPUT TYPE SELECTION (NORMALLY OPEN OR NORMALLY CLOSED)
To Select the K3C Output Type (Normally Open or Normally Closed Output)
Follow these steps:
Hysteresis Mode Window Mode
Pressure
ON-point
OFF-point
NO output
NC output
Output transistor
Pressure
OFF-point
ON-point
NO output
NC output
Output transistor
OFF-point – Hysteresis
ON-point – Hysteresis
1. Press the MENU Key three times in measurement mode. “OPE” will appear for output type selection. The output type currently set will
appear by pressing the DISPLAY Key.
2. Select NO (normally open) or NC (normally closed) by pressing the Up or Down Key.
3. By pressing the MENU Key, “SEN” will appear for Sensor type selection after the output type is entered.
If the RST/ESC Key is pressed instead, the set values will not be entered and “OPE” will appear again for output type selection.
4. When the OUT1 settings are finished, press the DISPLAY Key, and OUT2 will be ready for setting for channel 1 only.
Cancel
Channel 1
Enter
Select NO or NC with
the Up or Down Key. Select NO or NC with the Up or Down Key.
Channels 2 to 4
Cancel Enter
Select NO or NC with
the Up or Down Key.

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SET VALUE CHECK
Check the ON-Point and OFF-Point Currently Set
Follow these steps:
1. Press the DISPLAY Key, and the ON-point currently set will appear. Press the DISPLAY Key again to see the OFF-point that is cur-
rently set.
2. Press the DISPLAY Key again, and the ON-point of OUT2 will appear on channel 1 only.
•If there is no key input for 2 s during set value display, the
display panel will automatically return to the measurement
value display.
Channel 1
ON-point of OUT1 OFF-point of OUT1
OFF-point of OUT2 ON-point of OUT2
(As in example 1 on page 14)
Channels 2 to 4
ON-point of OUT1 OFF-point of OUT1
(As in example 2 on page 14)

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ON-POINT AND OFF-POINT SIMPLE SETTING (BY TEACHING)
Set ON-point and OFF-point values by using measurement values instead of key input in the teaching mode.
One-point teaching (which has only one setting point) and two-point teaching (which has two setting points) are both available in the
teaching mode.
One-point Teaching Two-point Teaching
Output
Pressure
Output
Pressure
Changing to Teaching Mode
•The Controller will go into teaching mode by pressing the
TEACH Key for 1 s in measurement mode.
1 s
Menu Selection
•Two-point teaching (i.e., hysteresis mode teaching) or one-
point teaching (i.e., window mode teaching) can be selected
by pressing the DISPLAY Key.
•By pressing the DISPLAY Key again, OUT2 will be ready for
setting for channel 1 only.
Two-point teaching mode
(hysteresis mode teaching) One-point teaching mode (window mode teaching)
•Displayed items:
TH1 (teach hysteresis mode, first point)
TW (teach window mode)

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Two-point Teaching (Hysteresis Mode Teaching)
1. By pressing the TEACH Key at the point of status 1 as shown below, the current measurement value of the selected channel will
appear.
2. Check the measurement value and press the TEACH Key for teaching. Teaching will be completed on the first point.
3. By pressing the TEACH Key at the point of status 2 as shown below, the current measurement value will appear.
Two-point Teaching
ON-point = (Teach 1 + Teach 2) ÷2
OFF-point = ON-point – 3% FS
Default is 10% FS (can be changed).
The value of teach 1 can be
larger than that of teach 2 and
vice versa.
The teach 1 and 2 positions
are reversible.
Pressure
OFF-point ON-point
Status 1
Status 2
Output
4. Check the measurement value and press the TEACH Key for teaching. Teaching will be completed on the second point.
5. Press the RST/ESC Key so that the Controller will be in measurement mode.
Note: The Controller will be in hysteresis mode automatically after two-point teaching.
The above settings are useful for applications that check vacuum absorption.
Present
measurement value
appears.
Teaching completed
on the second point.
Teaching completed
on the first point.
Measurement mode
Present
measurement value
appears.
ON-point and
OFF-point indicators
flash.

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One-point Teaching (Window Mode Teaching)
1. By pressing the TEACH Key at the point of status 3 as shown below, the current measurement value will appear and ON-point and
OFF-point indicators will start flashing.
One-point Teaching
ON-point = Teach 1 – 30% FS
OFF-point = Teach 1 + 30% FS
Default is 10% FS (can be changed).
Status 3
Output
Pressure
ON-point OFF-point
2. Check the measurement value and press the TEACH Key for teaching. Teaching will be completed on the ON-point and OFF-points.
3. Press the RST/ESC Key, so the Controller will be in measurement mode.
Note: The Controller will be in window mode automatically after one-point teaching.
The above settings are useful for applications that check original pressures.
ON-point and
OFF-point indicators
flash.
Present
measurement
value appears.
Measurement mode
Teaching completed.

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ON-point and OFF-point Set Values
Refer to Set Value Check (within this data sheet) to check ON-point and OFF-point set values.
Teaching Errors
Teaching will not be performed by pressing the TEACH Key if the present value or the result of teaching is not within the proper setting
range. If this situation occurs, “ER.T” (error teach) will appear for 1 s.
The present value is not within
the proper setting range. “ER.T” (error teach) appears for 1 s.
Measurement Value Zero-reset
Note: The Controller can be zero-reset provided that the Sensor is exposed to atmospheric pressure.
To reset the current measurement value as zero, press the RST/ESC Key for 1 s. The possible zero-reset range is within ±5% FS of the
rated output, or “ER.T” will appear, and the present measurement value will not be reset.
Press the RST/ESC
Key for 1 s.
ADVANCED OPERATIONS (SPECIAL SETTING MODE)
In this mode, the Controller allows the use of versatile functions for data protection, data copying, and fine setting adjustments.
Changing to Special Setting Mode
The Controller in measurement mode will be in special setting mode if the MENU Key is depressed while you press the Up Key.
Measurement Mode Special Set Mode