Unipulse F130 User manual

F130
06DEC2019REV.1.00
LOADCELL INTERFACE
FOR OMRON SYSMAC CJ1
OPERATION MANUAL

I
INTRODUCTION
Thank you very much for purchasing our Loadcell Interface F130.
For good performance, and proper and safe use of the F130, be sure to read this operation manual
and properly understand the contents of it before use. Also, carefully keep this operation manual so
that it can be referred to at any time.
SAFETY PRECAUTIONS
Please assign only persons with electrical technical knowledge to set up, service or inspect F130.
For the safe use of F130, safety precautions that should be complied with have been categorized
and indicated as " " and " " in this Operation Manual. The safety
precautions mentioned in this Operation Manual are crucial for safety. Therefore, use F130 only
after you have correctly understood the safety contents given.
For safety reasons, please read the following safety precautions thoroughly.
WARNING CAUTION
WARNING
This sign forewarns the presence of hazards that could result in serious injury or
fatality when incorrectly handled.
CAUTION
This sign forewarns the presence of hazards that could result in personnel injury or
property damage when incorrectly handled.

II
WARNING
●Before using the F130 as described below, be sure to consult with our sales personnel.
- Use in environments not described in the operation manual.
- Use in environments that greatly affects human life and assets, such as medical devices,
transport equipment, recreational equipment, and safety devices.
●Do not modify the F130. Doing so may cause fire or electric shocks.
●Do not install in the following environments.
- Places containing corrosive gas or flammable gas.
- Where the product may be splashed with water, oil or chemicals.
●Do not connect a commercial power source directly to the signal input/output terminals.
●Be sure to ground the protective ground terminal.
●Before performing the following, make sure that no power is applied.
- Wiring/connection of cables to the terminal blocks.
●For connection to the signal input/output terminals, check the signal names and pin
assignment numbers, and then carry out wiring properly.
●Do not connect anything to unused terminal(s).
●Before applying power, carefully check the wiring, etc.
●Use at a proper power supply voltage.
●Do not touch any terminal while applying power. Doing so may cause electric shocks or
malfunctions.
●If the cover of the main body is opened, it may cause an electric shock internally. Even if the
power is off, the internal capacitor is charged. Contact us for internal inspection or repair.
●In the case of smoke, an abnormal smell or strange sound, immediately turn off the power,
and disconnect the power cable.
This sign forewarns the presence of hazards
that could result in serious injury or fatality
when incorrectly handled.
Warning on design
Warning on installation
Warning on wiring
Warning during startup and maintenance

III
CAUTION
●Do not install in the following environments.
- Where the temperature/humidity exceeds the range of the specifications.
- Where the temperature changes severely or there is a danger of freezing or condensation.
- Places exposed to direct sunlight.
- Outdoors, or where the altitude exceeds 2000m.
- Dusty places
- Places containing large quantities of salt or iron powder.
- Where the main body is directly affected by vibrations or shocks.
●Take adequate shielding measures when using at the following locations.
- Near a power line.
- Where a strong electric field or magnetic field is formed.
- Where static electricity, relay noise or the like is generated.
●Install the F130 as far away as possible from devices that generate high frequency, high
voltage, large current, surge, etc. Also, carry out wiring separately from their power lines. Do
not carry out parallel wiring and common wiring.
●For sensors and external outputs use shielded cables.
●For turning on/off the power, be sure to keep intervals of 5 seconds or more.
●After power-on, be sure to warm up the F130 for 30 minutes or more before use.
●If the F130 is not used by the specified method, its protective performance may be impaired.
●Do not use it, broken down.
●Maintenance
- When performing maintenance, disconnect the power.
- Do not wipe with a wet rag, or with benzine, thinner, alcohol, etc. Doing so may cause
discoloration or deformation of the F130. In the case of heavy contamination, wipe off
the contamination with a cloth after dipping it into a diluted neutral detergent and wringing
it well, and then wipe with a soft, dry cloth.
●When the F130 is shipped, spacers made of corrugated cardboard are used as cushioning
materials.
Though it is factory-designed so that shocks can sufficiently be absorbed, breakage may
result if shocks are applied when the spacers are reused for transportation. If you send the
F130 to us for repair, etc., take adequate measures against shocks by using polyurethane
materials, etc., separately.
●If you dispose of the product, handle it as industrial waste.
This sign forewarns the presence of hazards
that could result in personnel injury or property damage
when incorrectly handled.
Caution on installation
Caution on wiring
Caution during startup and maintenance
Caution during transportation
Caution during disposal

IV
STATEMENT OF CONFORMATION TO EC DIRECTIVES
Unipulse F130 Loadcell Interface conforms to the EC Directives (based on Council of the European
Communities, and is allowed to affix CE mark on it.
* EMC Directives EN61131-2
The following notice must be observed when you install F130 unit.
1. F130 is an electrical device that are incorporated in machines and manufacturing installations.
F130 conforms to the related EMC standards so that the devices and machines into which F130
is built can more easily conform to EMC standards.
The actual F130 has been checked for conformity to EMC standards.
Whether these standards are satisfied for the actual system, however, must be checked by the
customer.
EMC-related performance will vary depending on the configuration, wiring, and other
conditions of the machine or device in which the F130 is installed.
The customer must, therefore, perform final checks to confirm that the overall machine or device
conforms to EMC standards.
2. Use shielded cables for connection with load cell.
RoHS-COMPLIANT PRODUCT
The parts and attachments (including the operation manual, packaging box, etc.) used for this unit
are compliant with the RoHS Directive restricting the use of hazardous substances with regard to
adverse effects on the environment and human body.
What is RoHS?
It is an abbreviation for Restriction on Hazardous Substances, which is implemented by the
European Union (EU). The Directive restricts the use of six specific substances in electric and
electronic equipment handled within EU borders. The six substances are lead, mercury, cadmium,
hexavalent chromium, PBB (polybrominated biphenyls), and PBDE (polybrominated diphenyl
ethers).
EN55016, EN61000-4-2, EN61000-4-3,
EN61000-4-4, EN61000-4-5, EN61000-4-6,
EN61000-4-8, EN61000-4-11

CONTENTS
V
CONTENTS
1．APPEARANCE DESCRIPTION ..............................................1
1-1．Front Panel ................................................................................................. 1
1-2．Status LED ................................................................................................. 1
1-3．Unit Number Select Switch ....................................................................... 2
2．CONNECTION METHOD ........................................................3
2-1．F130 Terminal Block Layout ..................................................................... 3
2-2．Sensor Connection .................................................................................... 3
2-2-1 4-wire Connection .......................................................................................3
2-2-2 6-wire Connection .......................................................................................4
2-2-3 Sensor Cable Coloration ............................................................................4
2-3．Connections to Terminal Block ................................................................ 5
3．DATA EXCHANGE WITH CPU ..............................................6
3-1．High Performance I/O Unit Restart Flag .................................................. 7
3-2．Relay Area .................................................................................................. 7
3-2-1 Allocation of Measurement・Hold Data ....................................................7
3-2-2 OUT (CPU Unit →F130) ..............................................................................8
3-2-3 IN (F130 →CPU Unit) ..................................................................................9
3-2-4 Register Allocations for Initial Settings ..................................................11
4．CALIBRATION METHOD .....................................................12
4-1．What is Calibration? ................................................................................ 12
4-1-1 About Calibration Methods ......................................................................12
4-2．Actual Load Calibration and Equivalent Input Calibration Procedure 13
4-3．Preparation for Calibration ..................................................................... 14
4-3-1 Setting Initial Data .....................................................................................14
4-3-2 Calibration Mode Selection ......................................................................15
4-4．Zero Calibration ....................................................................................... 15
4-5．Actual Load Calibration .......................................................................... 15
4-6．Equivalent Input Calibration ................................................................... 16
4-7．Calibration Error ...................................................................................... 16

CONTENTS
VI
5．MEASUREMENT SETTINGS ...............................................17
5-1．Analog Filter Selection (m+2) ................................................................. 17
5-2．Digital Filter Count Setting (m+3) ........................................................... 17
5-3．Digital Offset (m+4) ................................................................................. 17
6．MEASUREMENT・HOLD FUNCTIONS ...............................18
6-1．Measurement Function ........................................................................... 18
6-2．Hold Functions ........................................................................................ 18
6-2-1 Peak Hold ...................................................................................................18
6-2-2 Bottom Hold ...............................................................................................19
6-2-3 Average Hold .............................................................................................19
6-2-4 Application of the Hold Clear Function ...................................................20
7．BLOCK DIAGRAM ................................................................21
8．DIMENSIONS ........................................................................22
9．INSTALLATION ....................................................................23
9-1．Connection with CJ1 Unit ....................................................................... 23
9-2．DIN Rail Installation ................................................................................. 24
10．CAUTION ABOUT POWER CONSUMPTION
AND SYSTEM CONFIGURATION ......................................26
11．SPECIFICATIONS ..............................................................27
11-1．Analog Section ...................................................................................... 27
11-2．Display .................................................................................................... 27
11-3．Setting .................................................................................................... 28
11-4．Terminal Block Layout .......................................................................... 28
11-5．General Specifications .......................................................................... 28

1.APPEARANCE DESCRIPTION
1
1. APPEARANCE DESCRIPTION
1-1. Front Panel
1-2. Status LED
Status LEDs display the current operating status of the unit. The following table summaries their
names and meanings.
Status LED
Terminal block
Unit number select switch
CAUTION
Terminal block can be detached by pulling down
the lever. Normally, the lever should be in upper
position.
Always turn off the CJ1’s voltage source before
trying to attach/detach the terminal block.
B1A1
MACH
No.
1
0
1
10
0
F130
RUN
ERC
ERH

LED Name State Description
RUN
(Green) Operation status LED ON Normal operation
LED OFF Data exchange with CPU has been aborted
ERC
(Red) Error detected by the unit
LED ON Error occurred in F130
LED Blink Error (calibration error / setting error) or overflow (A/D input range over / measurement value over)
occurred in F130.
LED OFF Normal operation
ERH
(Red) CPU error LED ON Error occurred during data exchange with CPU
LED OFF Normal operation

1.APPEARANCE DESCRIPTION
2
1-3. Unit Number Select Switch
F130 acts as a Special I/O unit for Omron SYSMAC CJ1 series PLC. The data exchange between
CPU unit and F130 are carried out by the high performance relay area of I/O and DM area.
Relay and DM number used by F130 can be selected by the unit number selection switch located on
the front panel.
Unit number must be unique: duplicate use of the same number for multiple of
I/O units will cause operation error “Error: Duplicate use of unit No.” (“Duplicate use of unit No.”
in programming console), disabling normal operation (A40113 turns ON).
Switch
No. Unit No. Channel number allocated to the I/O unit relay area DM number allocated to the I/O unit DM area
00 2000 to 2009CH D20000 to 20099
11 2010 to 2019CH D20100 to 20199
22 2020 to 2029CH D20200 to 20299
33 2030 to 2039CH D20300 to 20399
44 2040 to 2049CH D20400 to 20499
55 2050 to 2059CH D20500 to 20599
66 2060 to 2069CH D20600 to 20699
77 2070 to 2079CH D20700 to 20799
88 2080 to 2089CH D20800 to 20899
99 2090 to 2099CH D20900 to 20999
10 10 2100 to 2109CH D21000 to 21099
nn2000+n×10 to
2000+n×10+9CH
D20000+n×100 to
D20000+n×100+99
95 95 2950 to 2959CH D29500 to 29599

2.CONNECTION METHOD
3
2. CONNECTION METHOD
2-1. F130 Terminal Block Layout
2-2. Sensor Connection
2-2-1. 4-wire Connection
F130 input uses an accurate 4-wire sensor connection. Use shielded 4-core cable for this connection
and route it apart from noisy lines (power and digital devices) and AC power lines.
SHIELD B1
+SIG B2
-SIG B3
+EXC B4
-EXC B5
RSV B6
RSV B7
RSV B8
RSV B9
A1 RSV
A2 RSV
A3 RSV
A4 RSV
A5 RSV
A6 RSV
A7 RSV
A8 RSV
A9 RSV
+IN
-OUT
-IN
+EXC
-EXC
+SIG
-SIG
SHIELD
+OUT
B4
B5
B2
B3
B1

2.CONNECTION METHOD
4
2-2-2. 6-wire Connection
For connecting a 6-wire strain gauge type sensor, connect +EXC and +S, and -EXC and -S,
respectively, on the terminal block as shown below.
2-2-3. Sensor Cable Coloration
Cable colors of sensors may differ from one manufacturer to another (it may even differ from one
model to another for some products).
See the sensor operation manual (or test report), and check the signal names and coloration for
proper connection.
CAUTION
The strain gauge type sensor excitation voltage of the F130 is 2.5V or 10V (selectable
by setting). Set within the maximum excitation voltage of the strain gauge type sensor
you use, and then make connection. Use exceeding the maximum excitation voltage
may cause abnormal heating and damage.
+IN
-OUT
-IN
+EXC
-EXC
+SIG
-SIG
SHIELD
+OUT
B4
B5
B2
B3
B1

2.CONNECTION METHOD
5
2-3. Connections to Terminal Block
Use pressure terminals to connect cables to the terminal. Tighten the pressure terminal securely to
the terminal block using a M3 screw. Correct tightening torque is 0.5Nm.
The width of the pressure terminal should be 6mm or less (see the figure below).
CAUTION
A1 to A9 and B6 to B9 are unnecessary in this specification, please do not connect
input and output signal lines to them.
Do not apply the voltage from the outside, or do not short-circuit with parts.
It may cause malfunction of F130 and external equipment.
Within 6mm Within 6mm
Pressure terminal M3 screw

3.DATA EXCHANGE WITH CPU
6
3. DATA EXCHANGE WITH CPU
The F130 exchanges data with CPU using the following devices: High performance I/O unit relay
area (measurement value and hold value) and high performance I/O unit DM area (Initial setting
data).
Measurement value・Hold value
Analog signal from the strain gauge type sensor is converted into digital data.
Measurement・Hold data is allocated to one of the relay area of the CPU units’ high performance I/
O unit based upon the unit number. The data is exchanged regularly every time I/O refresh takes
place.
Initial setting data
Parameter settings for using F130 as a Loadcell Interface .
A set of initial setting data for each F130 is allocated, based on its unit number, to a DM area for
high performance I/O unit (inside CPU unit), and is written to this area when the unit is powered
on, or a refresh cycle is started.
CJ series CPU unit F130
Measurement
Hold data
2000+n × 10
2000+n × 10+9
【High performance I/O unit relay area】
10CH
D20000+n × 100
D20000+n × 100+99
【Data memory (DM) area】
n: unit number
Measurement value,
(Peak, Bottom, Average)
Initial setting data
【Measurement data, Hold data】
【Initial setting data】
I/O refresh
Power-on
or
etc.
(Excitation voltage,
Calibration data,
Filter setting etc.)
unit restart
Initial setting
100CH
data
data
Hold value

3.DATA EXCHANGE WITH CPU
7
3-1. High Performance I/O Unit Restart Flag
When the user restart the unit after he has modified data memory or removed the cause of failure,
the user have to either power up the CJ1 main unit again, or changing the high performance I/O unit
restart flag in the following sequence: OFF →ON →OFF.
High performance I/O unit restart flag
3-2. Relay Area
3-2-1. Allocation of Measurement・Hold Data
OUT (CPU unit →F130)
IN (F130 →CPU unit)
n = 2000 + unit number×10 * (n) 08 to 10 are valid only in the calibration mode.
Relay number Function
A50200 0th unit restart flag
Restart each unit by switching
OFF →ON →OFF
A50201 1th unit restart flag
A50215 15th unit restart flag
A50300 16th unit restart flag
A50715 95th unit restart flag
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
n CH Mode
selection
request*
Factory-
adjusted
operation
request
Equiv.
input
cal.
request
Actual
load
cal.
request
Zero
cal.
request
Survival
conf.
request
Hold
value
clear
request
Hold
request
(section
spec.)
Digital
zero
request
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
n+1 CH Mode selection
response
Factory-
adjusted
operation
response
Setting
error
occurre-
nce
Cal.
error
occurre-
nce
Equiv.
input
cal.
respons e
Actual
load cal.
in
progress
Zero
cal. in
progress
Survival
conf.
response
((n) 07 is
inverted.)
Normally
ON
(Normally
1)
Measure
ment
value
overflow
A/D
input
range
over
Hold
value
clear
response
Hold
response
Digital
zero
response
n+2 CH Measurement value (-32768 to +32767)
n+3 CH Data update counter (0 to 65535)
n+4 CH Peak hold value (-32768 to +32767) / In calibration mode: strain gauge type sensor rated output value
n+5 CH Bottom hold value (-32768 to +32767) / In calibration mode: strain gauge type sensor rated capacity value
n+6 CH Average value (-32768 to +32767) / In calibration mode: strain gauge type sensor output value at the Zero calibration point
n+7 CH Average count (0,1 to 30000) / In calibration mode: calibration error number
n+8 CH Unused
n+9 CH Unused

3.DATA EXCHANGE WITH CPU
8
3-2-2. OUT (CPU Unit →F130)
Digital zero request
ON edge (0 →1) zeros the indicated value.
Hold request (section specification)
While this bit is ON (1), each hold value is detected and updated according to hold conditions.
Hold value clear request
ON edge (0 →1) clears the hold value. The output value becomes the indicated value of the signal-
input time.
Survival confirmation request
By changing this bit, the data transfer state between the CPU unit and F130 can be confirmed.
A response is made to the 7th bit of n+1 CH as this bit is inverted (0 ⇔1).
Zero calibration request
ON edge (0 →1) initiates Zero calibration.
However, this is valid only when the calibration mode is selected by Mode selection.
Actual load calibration request
ON edge (0 →1) initiates Actual load calibration.
However, this is valid only when the calibration mode is selected by Mode selection.
Equivalent input calibration request
ON edge (0 →1) initiates Equivalent input calibration.
However, this is valid only when the calibration mode is selected by Mode selection.
Factory-adjusted operation request
This bit is for factory-adjusted operation. Be sure to keep this OFF.
If this bit is changed (OFF →ON), normal operation may not be performed, or data may not be
recovered in some cases.
Mode selection
Select the operation mode of the F130.
Mode selection Operation mode
OFF Normal operation mode
ON Calibration mode

3.DATA EXCHANGE WITH CPU
9
3-2-3. IN (F130 →CPU Unit)
Digital zero response
Returns the state of the digital zero request bit.
Hold response
Returns the state of the hold request bit.
Hold value clear response
Returns the state of the hold value clear request bit.
A/D input range over
This bit becomes "1" when the input from the strain gauge type sensor is out of the input range of
the A/D converter.
Measurement value overflow
This bit becomes "1" when the indicated value is smaller than -32768, or larger than +32767.
Normally ON
Always returns "1."
Survival confirmation response
Returns the state of the survival confirmation request (n) 07 as it is inverted.
Zero calibration in progress
This bit becomes "1" while Zero calibration is in progress.
Actual load calibration in progress
This bit becomes "1" while Actual load calibration is in progress.
Equivalent input calibration response
Returns the state of the Equivalent input calibration request bit.
Calibration error occurrence
This bit becomes "1" if Zero calibration, Actual load calibration, or Equivalent input calibration
does not end properly with a calibration error.
Setting error occurrence
This bit becomes "1" when the initial set value assigned in the data memory area is ou t of the setting range.
Factory-adjusted operation response
Returns the state of the factory-adjusted operation request bit.

3.DATA EXCHANGE WITH CPU
10
Mode selection response
Returns the state of the mode selection request bit.
Set value (n+2)
Returns the indicated value of A/D-converted measurement.
-32768 to +32767; two's-complement number.
Data update counter (n+3)
Returns a numerical value incremented by one each time the indicated value is updated (3000
times/sec.).
0 to 65535; straight binary.
Peak hold value / strain gauge type sensor rated output value (n+4)
・In normal operation mode
Returns the maximum measurement value in the section specified by the hold request bit.
When the hold request bit turns OFF, data update is stopped, and the maximum measurement
value of that time is held.
By the hold value clear request bit, the maximum measurement value is cleared, and the real-
time measurement value is returned.
-32768 to +32767; two's-complement number
・In calibration mode
When the calibration mode is established by the mode selection bit, the initially set value "strain
gauge type sensor rated output value" of the time when the calibration was executed by each
calibration request bit is read and returned.
However, when Span calibration is executed, the input value from the strain gauge type sensor
is returned.
* After power-on, "0" is returned until the calibration is executed.
Bottom hold value / strain gauge type sensor rated capacity value (n+5)
・In normal operation mode
Returns the minimum measurement value in the section specified by the hold request bit.
When the hold request bit turns OFF, data update is stopped, and the minimum measurement
value of that time is held.
By the hold value clear request bit, the minimum measurement value is cleared, and the real-
time measurement value is returned.
-32768 to +32767; two's-complement number
・In calibration mode
When the calibration mode is established by the mode selection bit, the initially set value "strain
gauge type sensor rated capacity value" of the time when the calibration was executed by each
calibration request bit is read and returned.
* After power-on, "0" is returned until the calibration is executed.

3.DATA EXCHANGE WITH CPU
11
Average value / strain gauge type sensor output value at the Zero calibration point (n+6)
・In normal operation mode
Returns the average measurement value in the section specified by the hold request bit.
When the hold request bit turns OFF, data update is stopped, and the average measurement
value of that time is held.
By the hold value clear request bit, the average measurement value is cleared, and the real-time
measurement value is returned.
-32768 to +32767; two's-complement number
・In calibration mode
When the calibration mode is established by the mode selection bit, the strain gauge type sensor
input value of the time when the calibration was executed by the Zero calibration request bit is
returned.
* After power-on, "0" is returned until the Zero calibration is executed.
Average count / calibration error number (n+7)
・In normal operation mode
Returns the A/D conversion count in the section specified by the hold request bit as the number
of data used for average calculation.
By the hold value clear request bit, the average count value is cleared, and "0" is returned.
1 to 32767 ("0" when cleared); two's-complement number
・In calibration mode
When the calibration mode is established by the mode selection bit, the calibration error number
of the time when the calibration was executed by each calibration request bit is returned.
* After power-on, "0" is returned until the calibration is executed.
3-2-4. Register Allocations for Initial Settings
* m+10 ~ m+99: Unused
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
mExcitation voltage selection (0:2.5V, 1:10V)
m+1 Minimum scale division (1 to 100)
m+2 Analog filter selection (0:3Hz, 1:10Hz, 2:30Hz, 3:100Hz, 4:300Hz, 5:1kHz)
m+3 Digital filter count setting (1 to 512) * Digital filter: Moving-average
m+4 Digital offset (-30000 to +30000)
m+5 Sensor rated output value (50 to 3100) * Used for 0.050 to 3.100mV/V Equivalent input calibration.
m+6 Sensor rated capacity value (1 to 32000) * Used for Actual load calibration or Equivalent input calibration.
m+7 Unused
m+8 Unused
m+9 Unused

4.CALIBRATION METHOD
12
4. CALIBRATION METHOD
4-1. What is Calibration?
Calibration is performed for matching the F130 to a strain gauge type sensor.
That is, F130 must be properly adjusted to indicate 10.00kN when an actual load of 10kN is placed
on the strain gauge type sensor.
4-1-1. About Calibration Methods
There are two methods of Span calibration: Actual load calibration and Equivalent input
calibration.
Actual load calibration
By this method, calibration value is registered by the value of the actual load applied to the strain
gauge type sensor.
Error-less accurate calibration can be performed.
Equivalent input calibration
By this method, calibration value is registered from the rated output value (mV/V) and rated capacity
value of the strain gauge type sensor. This calibration method using no load can simplify work.
Just connecting a strain gauge type sensor to F130 …
？？
？
F130 indicates random values
After calibration ….
The F130 and strain gauge type sensor
function as a weighing device
10kN
10kN
A data sheet is attached to a strain gauge type sensor at the time of purchase.
For Equivalent input calibration, the "rated capacity value" and "rated output value"
described on the data sheet are set to the F130: therefore, it should be carefully
stored after calibration.
Attention

4.CALIBRATION METHOD
13
4-2. Actual Load Calibration and Equivalent Input Calibration Procedure
Steps required to perform Actual load calibration and Equivalent input calibration are as follows:
Write initial setting data to the DM area that corresponds to
MACH No.
Register initial setting data to F130. To do this, either power on
the F130, or restart it by toggling restart flag in the following
sequence: OFF →ON →OFF.
Set the mode selection bit (15th bit of nCH) to "1" to establish
the calibration mode.
Register initial zero value by setting the Zero calibration bit
(8th bit of n CH) to “1”.
- Actual load calibration
Register a span by applying actual load to the strain gauge type
sensor.
- Equivalent input calibration
Execute Equivalent input calibration.
(Set the Equivalent input calibration bit (10th bit of nCH) to "1.")
Perform the Zero calibration procedure again if required.
Set the mode selection bit (15th bit of nCH) to "0" to restore the
normal operation mode.
Calibration mode release
Span Calibration
(Actual load calibration/
Calibration mode selection
F130 Power on,
or restart
Input initial setting data
Zero Calibration
Equivalent input calibration)
Zero Calibration