Manostar EMD8A066 User manual
RoHS
READ THE INSTRUCTION MANUAL BEFORE USING
INSTRUCTION MANUAL
MANOSTAR DIGITAL SENSOR
E M D 8A066
N o . TR- E M D 8A066- E 0 0
1-2-3,Nishi-shiriike-cho,Nagata-ku,Kobe,Hyogo 653-0031 JAPAN
TEL. +8178-631-6000 FAX. +8178-631-6020
TABLE OF CONTENTS
PAGE
INTRODUCTION ......................................................................................................................1
PRECAUTIONS........................................................................................................2
SPECIFICATIONS
1Outline drawing....................................................................................................3
2Function
2-1 Display function ...........................................................................................4
2-2 Digital communication function (MODBUS)........................................5
2-3 Max. and min. value memory function ..................................................5
2-4 Function of low power consumption.....................................................5
2-5 Function of test mode ...............................................................................5
2-6 Function to clear set value......................................................................5
2-7 Function of set value protecting............................................................6
INSTALLATION
1Installation conditions ......................................................................................6
2Installation of instrument ...............................................................................6
3Wiring.........................................................................................................................6
4Piping
4-1 Measured pressure and connection of piping ....................................8
4-2 Piping material..............................................................................................9
4-3 Caution of piping..........................................................................................9
OPERATION
1Before trial running ........................................................................................ 10
2Operation panel ................................................................................................ 10
3How to operate
3-1 Change-over procedure of mode........................................................ 10
3-2 Basic operation in each mode.............................................................. 13
3-3 Operation of test mode.......................................................................... 14
3-4 Calibration for zero adjustment........................................................... 14
4MODBUS communication
4-1 Communication specifications ............................................................. 15
4-2 Communication setting........................................................................... 15
4-3 Structure of message frame................................................................. 15
4-4 Message examples ................................................................................... 15
4-5 MODBUS address map........................................................................... 18
4-6 Status history list .................................................................................... 19
4-7 List of communication error history ................................................. 19
INFORMATION ON SOFTWARE .......................................................... 20
PRODUCT WARRANTY ................................................................................ 21
1
INTRODUCTION
Thank you very much for purchasing of “MANOSTAR DIGITAL SENSOR EMD8A”.
Features
Compact size
This instrument is a compact digital micro differential pressure gage composed of the diaphragm type detection part and
display part incorporated in 24 ×48 size.
Digital communication input/output (MODBUS)
Thanks to the compatibility with RS-485 (MODBUS/RTU), it is possible to acquire measurement values as digital values
and change settings from a remote location.
Employing an easy-to-see large seven segments LED
Red-colored seven segment LED, 12 mm high character of high visibility, is used for 3･1/2 digits.
Simple operability
This machine, designed for dedicated to pressure measurement, has simple operation set menu.
Low power consumption
The electric power consumption is reduced by lowering the display luminance of LED.
Setting value protecting function
It prevents a setting value to mistake by incorrect operation.
Test mode function
Even when pressure is not actually applied, by setting a simulated pressure, it is possible to check the operation at the time
of installation and inspection.
Max. and min. value memory function
Max and min value of the measurement pressure are retained and it displays it.
Caution
To ensure your safety in using this instrument:
Be sure to read the instruction manual carefully before using this instrument so that you can use
it properly.
Wrong use may result in failure of this instrument and lead to its damage and accident.
This manual should be kept in a proper place so that you can refer to it any time you need.
2
PRECAUTIONS
Warning
Do not use the instrument where flammable gas is present.
The instrument is not explosion-proof. Do not use instruments in the circumstance where flammable gas is present. It
may cause explosion.
Do not use the instrument at the place where corrosive gas is present.
he instrument is not corrosion resistance construction. Measuring corrosive gas may corrode the receiving element and
housing material of the instrument. It is expected that corrosive gas leaked out of the instrument will harm a person.
Do not apply the pressure to the instrument more than it can withstand.
The diaphragm and the retainer are broken and cause of injury or accident, etc. disaster if the pressure exceeding
withstanding pressure of the pressure receiving element is applied to the instrument. The case body and the transparent
cover of the instrument are broken and cause of injury or accident, etc. disaster if the pressure exceeding withstanding
pressure of the instrument body is applied to the instrument.
・The instrument is measurable for air and non-corrosive gas only.
The machine is exclusive use of dry air (85%RH or less). Using measuring the water or oil it may be damaged and causes
the accident.
Avoid using where instrument is exposed to many vibration and impact.
Using this instrument where intensified vibration and impact may be damaged instrument. It is expected that gas leaks of
instrument which harms a parson.
Do not exceed rated voltage in using.
Using this instrument by exceeding rated voltage may cause fire or electric shock.
Wire correctly.
Incorrect wiring may cause fire.
Do not exceed rated surrounding temperature, humidity and altitude in use.
Using this instrument by exceeding rated surrounding temperature and humidity and altitude it may be damaged and
cause the accident.
Do not disassemble or reconstruct your instrument.
It may void your warranty.
Caution
Operate the keys on the operation panel with the fingers.
Pressing a key with a hard or sharpened object may damage or break the surface of the key, possibly leading to a failure.
As to where to install and how to install the instrument, be sure to follow the instruction manual so as to ensure a proper
method.
Use the instrument indoors.
In case of not being installed in dry and well-kept clean locations, the instrument must be enclosed in box.
Keep as great a distance as possible from a device that generates strong electromagnetic fields, and then use this
sensor.
If the surrounding area of the installation location has a strong electromagnetic field, the pressure indication accuracy
may be lowered.
As the DC power supply to be connected to this sensor, use NEC (National Electrical Code) Class 2 power supplies or
LPS (Limited Power Source) power supplies.
Do not use organic solvent for cleaning.
Use of organic solvent, such as thinner and benzene, to remove surface dirt and stain may cause melting and cracking on
the surface. To remove dirt and stain, be sure to wipe them off with a wet cloth using diluted neutral cleanser.
Dropping the product.
Product is a precision instrument. If you drop the product, there is a possibility that the exterior, also the interior
mechanism damage.
Removal of the piping
If you replace the old pipes, please do not pull the pipe with a strong force. There is a possibility that the pipe cap is
broken.
3
SPECIFICATIONS
1Outline drawing
Fig.2-(1) EMD8A066 outline drawing
4
2Function
The pressure sensor of this product can measure differential pressures. If the pressure on the H side is higher than that
of the L side, the pressure display shows a positive value.
This sensor performs A/D conversion of the signal from the pressure sensor, then performs zero compensation and
movement average processing, and finally displays the value and performs the digital communication output.
2-1 Display function
1Display filter
The number of the moving average filter for display is set in the display filter setting mode. When the change of
the measurement pressure is large, the change of the display value can be reduced by enlarging the average
number of the moving average function. The response is late according to large a set value of the filter mode.
It is possible to independently set the movement average filter for display use and that for digital communication
output use.
When the instrument is shipped from our factory, is set to standard "1.0 sec.".
Display filter mode
Average processing (Response time)
Setting value
F0.2
High speed (0.2 sec.)
F1.0
Standard speed (1.0 sec.)
F2.0
Low speed 1 (2.0 sec.)
F4.0
Low speed 2 (4.0 sec.)
2Overrange warning
The display pressure "FFF" and informs of the over range when pressure which exceeds the ratings pressure
joins in this instrument. The display pressure "-FFF" when the difference pressure is negative.
・Over range pressure
Mono (single) pressure range ：110% or more and -10% or less of the ratings pressure.
Zero center (+-) pressure range ：60% or more and -60% or less of the ratings pressure.
3Function of display low cut
It is a mode that compulsorily sets the indicated value to 0 when the measurement pressure indicated value is
about 0. When setting value is “CT2”(2%FS), the value of less than ±2%FS becomes 0 displays. Please set
CT0 (0%FS) when you do not use the function.
The low cut function applies only to the displayed value and does not affect the digital communication output.
4Function of sign reversal of display measured
The sign of the display of the pressure display mode and the max and the min value display mode is inverted. This
function is used to invert the sign when negative pressure is measured. Please refer to P.8 “4-1 Measured
pressure and connection of piping“for the usage of this function.
Fig.2-(2) Function block diagram
LED display
Digital
communication
RS-485
communication
circuit
Amplifier
Pressure sensor A/D
converting
Value to be
measured processing
Zero correction
Moving
average
for output
Moving
average
for display
5
2-2 Digital communication function (MODBUS)
1Digital communication (input/output)
By means of RS-485 (MODBUS/RTU) communication, it is possible to acquire pressure measurement values,
execute zero adjustment, and change the various settings.
For the items and effective value ranges, refer to P.18 “4-5 MODBUS address map“.
2Output filter
The number of the moving average filter for digital communication output is set in the output filter setting mode.
When the change of the measurement pressure is large, the change of the output value can be reduced by
enlarging the average number of the moving average function. The response is late according to large a set value
of the filter mode. It is possible to independently set the movement average filter for display use and that for
digital communication output use.
When the instrument is shipped from our factory, is set to standard "1.0 sec.".
Output filter mode
Average processing (Response time)
Setting value
F0.2
High speed (0.2 sec.)
F1.0
Standard speed (1.0 sec.)
F2.0
Low speed 1 (2.0 sec.)
F4.0
Low speed 2 (4.0 sec.)
3Function of sign reversal of digital communication output
This function inverts the signs of pressure measurement value, maximum value, and minimum value, and then
outputs them. This function is used to invert the sign when negative pressure is measured. Please refer to P.8
“4-1 Measured pressure and connection of piping“for the usage of this function.
2-3 Max. and min. value memory function
Each value is displayed and the max. value and the min. value of the pressure measurement value can be reset in
the max. value memory display mode or the min. value display mode. the max. value and the min. value memory is
reset once the power supply to this sensor is turned off.
2-4 Function of low power consumption
The electric power consumption is reduced by lowering the display luminance of LED. It is not influenced about
other functions at all. The display luminance only at the pressure display mode falls and other program modes etc.
become usual luminance’s when the function is on.
2-5 Function of test mode
This function tests whether the parameter setting is correctly set when the device is set up and checked. In this
mode, simulative pressure can operate the device without applying actual pressure. This function is used to check
the operation by changing the simulative pressure. The simulative-pressure-value is automatically set to
present-pressure-value at the time of shifting to test-mode. A simulative setting pressure is not preserved. The
display blinks for the test mode recognition when shifting to the test mode. It is recognized that the blinking
display is not a pressure display mode. The pressure display mode by the passage of 15 seconds in the no operation
time doesn't return in this mode automatically.
2-6 Function to clear set value
In the setting clear mode, it is possible to revert the setting values in each mode to the factory default setting
values.
For the factory default setting values, refer to P.12 “Mode table“.
Caution
Performing setting clear deletes the current setting values.
6
2-7 Function of set value protecting
It becomes impossible to change set value by each program mode when set value protecting is set. It prevents a set
mistake by the miss operation etc. etc. Please release protecting only when the setting change is necessary.
INSTALLATION
1Installation conditions
The following places should be avoided for installation of this unit.
・Don't install where there are intense vibration and impact are applied to this unit.
・Don't install where there is sudden fluctuation of surrounding temperature or place where this unit is exposed to
direct sunlight.
・Don't install where high humidity exists, where water or oil splashes over the unit or where there is much dust.
・Don't install where corrosive gas or flammable gas is generated.
2Installation of instrument
Insert EMD8A body into the panel hole and press the flange of EMD8A enough against the panel so that it hits the panel
surface.
Caution
installation position : Vertical only.
3Wiring
External connection diagram is shown in Fig.3- (1). The connection example when an external equipment is connected
is shown in Fig.3- (2).
When using MODBUS communication, it is possible to connect multiple pieces of this sensor to a single master.
(According to RS-485 standard, it is possible to connect 31 pieces of this sensor at maximum.)
While the maximum communication distance is 500 m, it varies depending on the installation conditions (number of
connected products and noise environment).
Connect a terminating resistor at the end of the line as necessary.
Caution
Do not let rating of each terminal go beyond the specifications.
When wiring, be sure to separate the wiring from the wiring of power supply.
Fig.3-(1) External connection diagram EMD8A066type
CN1-1 Power supply +12 to 24 VDC
CN1-2 Power supply -0 V
CN1-3 RS-485 A+
CN1-4 NCunused
CN1-5 NCunused
CN1-6 RS-485 B-
7
Fig.3-(2) Example of connection EMD8A066 type
Accessory
RITS plug connector 6P (produced by TE Connectivity)
Product code
Color of cover
Applied cable
Nominal
cross-sectional areas
O.D of the wire cover
1473562-6
Yellow
0.10.5mm2
1.01.15mm
Caution
For crimping wire to connector, a RITS plug connector must be used.
RITS plug connector is not compatible to other manufacturer's connector because it is not compliant
with the industry standard "e-CON". (The standard "e-CON" is only used in Japan.)
For crimping wire to connector, a specific RITS plug connector (TE Connectivity),
product number 1729940, must be used.
For further inquiry on the detail of RITS plug connector and the other tools, please contact
TE Connectivity directly.
8
4Piping
The instrument, a differential pressure gage, is provided with
taps at the rear side : one for high pressure (HIGH) and the
other for low pressure (LOW).
Depending on the application and use, connect piping as follows.
4-1 Measured pressure and connection of piping
Please connect the piping shown in the table below according
to the measured pressure, and set the function of inverting
sign of measurement display.
Measurement pressure
Differential pressure
Gage pressure
Usage
Differential pressure
measurement
Positive pressure
measurement
Negative pressure
measurement
Piping
High pressure side
tube tap
HIGH
Measurement pressure
(high)
Measurement pressure
(positive pressure)
Open to atmosphere
Low pressure side
tube tap
LOW
Measurement pressure
(low)
Open to atmosphere
Measurement pressure
(negative pressure)
Function sign reversal of
display measured
oFF
oFF
on
Function of sign reversal of
digital communication output
oFF
oFF
on
Caution
For gage pressure measurement with the instrument of zero-center range (+ -) , connect piping to high
pressure tap in order to match symbol on the display (+ , -) and the actual polarity inside the tubing
pressure.
For zero-center range (+−) , unless there is a special reason, set P.4 Function of sign reversal of
display measuredand P.5 Function of sign reversal of digital communication outputto OFF.
Caution
Fig.3-(5)
When one side of tap is open to
atmospheric air, be sure to provide air vent
at the outside of panel, or the port released
and open in the panel (box of device etc.) ,
has been exposed to in-panel pressure
generated by air flow to cool down inside of
panel forcibly by fan, etc.
Fig.3-(4) Layout of tube tap
High pressure
Side tube tap
(HIGH)
Low pressure
side tube tap
(LOW)
9
4-2 Piping material
For tubing material used for taps of this unit, be sure
to use tubing material of I.D 4.
Vinyl or rubber tubes are suitable.
As shown in Fig.3-(6), when inserting the piping into
the tap, be sure to push it in until the piping hit the
bottom of tap.
Caution
Fig.3-(7)
When connecting or disconnecting the piping
to the tube tap, please be sure to grasp the
sides of case (the shaded area in Fig.3-(7))
firmly with your fingers.
Do not apply strong force to either the top or
bottom surfaces of the case.
4-3 Caution of piping
Prohibition of common piping
Piping each of pressure detectors and pressure receiving
instruments tube exclusively dedicated for it, and do not
connect the piping commonly with the adjacent system as
shown in Fig.3-(8).
Errors caused by long distance piping
The speed of response is delayed when the product is used
for remote monitoring. In such application, the I.D. of the
connection tube should be as large as possible.
If the piping conditions of the high and low pressure side
are significantly different, the difference in the piping
resistance between high and low pressure side causes the
difference in pressure transmission time, and the
measurement becomes inaccurate.
Prevention of clogging at tubes caused by drain
･If drain remains within the line, it causes measurement error. Be sure to install the pressure receiving instrument
above the pressure outlet port of the pressure detector and arrange the line so that the drain water should not
remain in the slack piping.
･If the arrangement mentioned above in not possible, install a drain tank and clean it once in a while.
･After the cleaning of the tank, check that the air tightness is fully kept.
Fig.3-(6)
Fig.3-(8)
EMD8A body
Vinyl, plastic or
rubber tube
Tube tap
10
OPERATION
1Before trial running
Before supplying power to this unit for the first time after installation, take care of the following matters.
1）Make sure again of the followings and see if they are correct: location of installation, environment and how the
instrument is installed, wiring and piping etc.
Supplying power with wrong wiring and piping may lead to instrument failure and accidents.
2）Before supplying power, take measures on other devices and the machine in which this sensor is incorporated so that
they will not be affected.
2Operation panel
Fig.4-(1) Display and key function
3How to operate
3-1 Change-over procedure of mode
Please switch to each mode one by one by《Mode》key operation as shown in the Fig.4-(2). Holding down 《Mode》
key for two seconds or longer enters the setting mode.
It automatically returns to the pressure display mode when there is no key input even if 15 seconds or more pass
from the last key input. However, it excludes 《Up》《Down》key input waiting state of setting mode.
Even if the power supply is intercepted, a set value of each mode is maintained excluding the max. and the min.
value memory, and the test mode.
Please refer to P.12 “Mode table“for the factory default setting.
Pressure and mode indicator
(31 / 2 digits segment LED)
EnterKey:
Register set value of each mode.
By pressing, the display blinks twice
to notify registration.
DownKey:
To lower the numerical value of
setting value of each mode.
UpKey:
To raise the numerical value of
setting value of each mode.
ModeKey:
To change the mode
One pushing up or down key changes
Figure one by one and continuous pushing
up or down key changes figure continuously.
Comparison output 2 display
(Not in use)
Comparison output 1 display
(Not in use)
11
Fig.4-(2) Change-over of mode (Please refer to P.10 “3How to operate“for a basic operation in each mode.)
Every
one
second
Max. and min. value display Zero adjustment Setting value
protecting Setting mode
Sets the address in MODBUS communication.
Selects the communication speed
in digital communication.
Selects the display filter.
Selects the output filter.
Sets the indication low cut value.
Sets the sign inversion for measurement
indication value.
Sets the sign inversion for digital output value.
Sets the power consumption mode.
Enters the test mode, and sets a simulated
pressure value.
Pressure setting range
Single pressure range-10 to +110%FS
Zero point center range-60 to +60%FS
UnitPa, kPa
This function reverts the setting value
to the factory default.
01 to FE(hexadecimal)
Display mode of
the pressure value
Memory reset
Memory reset
Continuous
pressing
Setting / release
alternate operates
Normal display
Upper limit over range display
Single pressure range+ 110 % FS or more
Zero point center range+ 60 % FS or more
Lower limit over range display
Single pressure Range- 10 % FS or less
Zero point center range- 60 % FS or less
It automatically returns to
the display mode of the
pressure value when a key is
not pressed for 15 seconds.
(exclude it at the time of
and key input waiting of
the setting mode.)
9.6kbps
19.2kbps
0.2 seconds
1.0 second
2.0 seconds
4.0 seconds
0 to 5%FS(in units of 1%FS)
Symbol inversion
Normal
Symbol inversion
Normal
Low power consumption mode
Normal power mode
Does not clear the setting value.
Clears the setting value.
Explanation of mark
Modekey is pushed
Upkey is pushed
Downkey is pushed
Enterkey is pushed
Continuous pressing for
two seconds or more
0.2 seconds
1.0 second
2.0 seconds
4.0 seconds
Continuous
pressing
Every
one
second
Continuous
pressing
Continuous
pressing
Continuous
pressing
12
Mode table
Mode type
Mode name
Mode
display
Factory default setting
Setting range
Display
Set value
Unit
Pressure
display
Normal
―
―
Pa / kPa
―
Upper limit over range
―
―
―
―
Lower limit over range
―
―
―
―
Quick
Zero adjustment
―
No zero corrections
―
―
Seting value protecting
―
Protecting release
―
UnL / LoC
Max. value display
―
―
Pa / kPa
―
Min. value display
―
―
Pa / kPa
―
Setting
MODBUS slave address
01
―
01～FE（hexadecimal）
Communication speed
9.6kbps
bps
9.6k / 19.2k
Filter
Display
Response time 1.0 seconds
seconds
0.2sec/1sec/2sec/4sec
Output
Response time 1.0 seconds
seconds
Display low cut
±2%FS
±%FS
0～5%FS (every 1%FS)
Sign reversal of
display measured
Off
―
on / oFF
Sign reversal of
Digital communication output
Off
―
on / oFF
Low power consumption
Off
―
on / oFF
Test mode
―
―
―
Mono: -10～+110%FS
±：-60～+60%FS
Setting clear mode
（factory default setting）
―
―
*All setting values are set to the factory default setting in the setting clear mode.
13
3-2 Basic operation in each mode
Please refer to P.11 “Fig.4-(2) Change-over of mode“for the order of shifting each mode etc. As for the following
items, it is executable from the pressure display mode according to a quick operation. All basic operations of other
each program mode are united as shown in Fig.4- (3).
Quick operation
LP Zero adjustment
LP Setting value protecting
Max. value display
Min. value display
Continuous pressing for two seconds or more
Fig.4-(3Common setting operations
1Registration of set value
It moves from the pressure display mode to each mode one by one by《Mode》key operation. When《Enter》key is
pressed with becoming the display of a target mode, present value is displayed, and state moves in the state of
value input. Next, after the display value is adjusted to a target set value by operating《Up》《Down》key, 《Enter》
key is pushed. Then, the display blinks twice and registration to the memory is completed. It is not registered
until《Enter》key is pushed even if setting display value is changed.
2Operation of set value
When a set value is changed in each mode, a set value grows if《Up》key is pushed, and if《Down》key is pushed, a
set value becomes small. It becomes a lower bound if《Up》key is pushed when the indicated value is an upper
limit, and if《Down》key is pushed at the lower bound, it becomes an upper limit. The value increases and
decreases continuously when press and hold a key (key repeat operation). The range which can be set is different
depending on each mode.
3Error and command protecting when setting is operated
The display becomes and registration becomes invalid at the time of the command protecting. The
setting and release alternately change into the setting value protecting at each quick operation.
( LP)
MODE
MODE
Explanation of mark
Modekey is pushed
Upkey is pushed
Downkey is pushed
Enterkey is pushed
Set completion
Operation example
Low power consumption mode
Normal power mode
Next setting item
Set completion
Next setting item
One pushing《Up》or《Down》key changes
figure one by one and continuous pushing
up or down key changes figure continuously.
A target setting value is displayed
by operating《Up》or《Down》key. （It is registered in memory）
14
4Clearing of the Max. and Min. value
It becomes the following with 《Enter》key in the following mode.
Max. value display mode : The max.value is reset.
Min. value display mode : The min.value is reset.
5Set value clear mode : A set each value is returned to the state of the factory shipment.
When ”YES”is selected in set value clear mode and《Enter》key is pressed, all set values are restored in the
state of factory shipment. When ”no”is selected, clearness is not executed. Default is ”no”so as not to clear
by mistake.
3-3 Operation of test mode
The measurement pressure value immediately before is set as simulative pressure value immediately after the shift
of the test mode. And, the state becomes a test mode at once. Even if《Enter》key is not pressed, the increase and
decrease of value with《Up》《Down》key becomes effective at once.
3-4 Calibration for zero adjustment
To set the current pressure indication value to 0% FS, adjust the offset between the indicated value and the digital
communication output value.
As the zero adjustment processes internal data whose accuracy is higher than the indicated pressure, this function
works even when the pressure indication is “0.”
[Operation procedure]
1）Leaving pressure tubes open to atmospheric air on the H side as well as L side, let this unit have no pressure
applied.
2）In accordance with P.10 “3-1 Change-over procedure of mode“,return to the pressure display mode.
3）Press《Up》key and《Down》key at the same time for two seconds or more. The display informs of zero adjustment
completion by the display's becoming ”000”and blinking twice.
4）Reconnect tubes back to normal and this puts an end to operation.
Note)
When the pressure display value shifts by ±20% or more to the factory shipment, zero adjustment can not to be
done. At this time, the display shows .
Caution
Before conducting zero adjustment, perform a warm-up operation for 15 minutes or longer after turning
on of the power supply.
Be sure to conduct zero adjustment with the product in a correct installation orientation by surely
avoiding application of pressure to both the H and L side bases (open to atmosphere) or stopping the
machine operation and reducing the residual pressure to zero.
After zero adjustment has completed, be sure to put the pipes back.
15
4MODBUS communication
4-1 Communication specifications
Communication method EIA-485（RS-485）
Protocol MODBUS/RTU
Communication speed 9.6kbps ,19.2kbps
Data length 8 bits (fixed)
Parity None (fixed)
Stop bit 1 bit (fixed)
Address setting range 1 to 254 (01 to FE)
4-2 Communication setting
Set the slave address and communication speed in accordance with P.11 “Fig.4-(2) Change-over of mode“.
*The factory default settings are “slave address: 01”and “communication speed: 9.6 kbps.”
4-3 Structure of message frame
The message frame of MODBUS/RTU is as follows.
Start
Slave address
Function code
Data
CRC
End
Non-communication
time
(For 3.5 characters)
1 byte
1 byte
n bytes
2 bytes
Non-communication
time
(For 3.5 characters)
When “FF”is set to the slave address, broadcast communication is enabled, and writing is performed in all pieces of
this sensor on the same bus.
*Function codes 05 and 16 only.
4-4 Message examples
address 01.
Query
01 03 00 04 00 01 C5 CB
Start
Slave
address
Function
code
Data
CRC
End
Start address
Number of registers
-
01
03
00
04
00
01
C5
CB
-
Caution
Items cannot be continuously read.
Except in
Response *
01 03 02 00 06 38 46
Start
Slave
address
Function
code
Data
CRC
End
Number
of bytes
Description
-
01
03
02
00
06
38
46
-
16
Query
01 04 00 00 00 01 31 CA
Start
Slave
address
Function
code
Data
CRC
End
Start address
Number of registers
-
01
04
00
00
00
01
31
CA
-
Caution
Items cannot be continuously read. Set “00 01”to “Number of registers.”
Response *
01 04 02 00 64 B8 DB
Start
Slave
address
Function
code
Data
CRC
End
Number
of bytes
Acquired data
-
01
04
02
00
64
B8
DB
-
Query
01 05 00 00 00 01 0C 0A
Start
Slave
address
Function
code
Data
CRC
End
Start address
Changed data
-
01
05
00
00
00
01
0C
0A
-
*When “FF” is set to the slave address, broadcast communication is enabled.
Response
01 05 00 00 00 01 0C 0A
Start
Slave
address
Function
code
Data
CRC
End
Start address
Changed data
-
01
05
00
00
00
01
0C
0A
-
*In broadcast communication, there is no response.
17
Query
01 10 00 00 00 01 02 00 01 67 90
Start
Slave
address
Function
code
Data
CRC
End
Start address
Number of
registers
Number
of bytes
Changed data
-
01
10
00
00
00
01
02
00
01
67
90
-
*When “FF” is set to the slave address, broadcast communication is enabled.
Caution
Items cannot be continuously written.
Response
01 10 00 00 00 01 01 C9
Start
Slave
address
Function
code
Data
CRC
End
Start address
Number of
registers
-
01
10
00
00
00
01
01
C9
-
*In broadcast communication, there is no response.
18
4-5 MODBUS address map
The details of addresses are as shown in the table below.
MODBUS address map
Read
/
Write
Function
code
Address
Data
type
Data
size
Item
Effective data range
Reference
Initial
value
R
04
0
Signed
integer
2 bytes
Pressure value
Same as pressure range indication
--1100)
* The decimal point in the indicated value is omitted.
-
-
R
04
1
Signed
integer
2 bytes
Pressure ratio
Mono
-
-
R
04
2
Signed
integer
2 bytes
Maximum pressurization
value
Same as
-
-
R
04
3
Signed
integer
2 bytes
Minimum pressurization
value
-
-
R
04
4
Unsigned
integer
2 bytes
Communication error
history
Refer to 4-7 List of communication error history
P.19
00
R
04
5
Unsigned
integer
2 bytes
Status history
Refer to 4-6 Status history list
P.19
00
W
05
0
Boolean
1 bit
Zero adjustment
1: Execute zero adjustment.
P.14
0
W
05
1
Boolean
1 bit
Clearing of maximum
value/minimum value
1: Clear maximum value/minimum value.
P.5
0
W
05
2
Boolean
1 bit
Clearing of maximum
value
1: Clear maximum value.
P.5
0
W
05
3
Boolean
1 bit
Clearing of minimum value
1: Clear minimum value.
P.5
0
W
05
4
Boolean
1 bit
Clearing of error
1: Clear information on error that has occurred.
-
0
W
05
100
Boolean
1 bit
Restart
1: Restart the device.
-
0
W
05
200
Boolean
1 bit
Factory default setting
1: Reset the setting values in each mode to the factory
default setting values.
* Setting of slave address is also reset.
P.12
0
R/W
03 / 16
0
Unsigned
integer
1 byte
Low power consumption
mode
0: disable 1: enable
P.5
0
R/W
03 / 16
1
Unsigned
integer
1 byte
Setting value protection
0: disable 1: enable
P.6
0
R
03
2
Unsigned
integer
4 bytes
Manufacturing number
-
-
-
R
03
4
Unsigned
integer
1 byte
Pressure range code
06: D50 08: D100 11: D200
12: D300 13: D500 16: D1000
21: D+-50 22: D+-100 23: D+-200
24: D+-300 25: D+-500
-
-
R/W
03 / 16
5
Unsigned
integer
1 byte
Display low cut
0 to 5 (0 to 5%)
P.4
02
R/W
03 / 16
7
Unsigned
integer
1 byte
Function of sign reversal
of display measured
0: disable 1: enable
P.4
0
R/W
03 / 16
8
Unsigned
integer
1 byte
Display filter
0: 200 ms 1: 1000 ms 2: 2000 ms 3: 4000 ms
P.4
1
R/W
03 / 16
10
Unsigned
integer
1 byte
Output filter
0: 200 ms 1: 1000 ms 2: 2000 ms 3: 4000 ms
P.5
1
R/W
03 / 16
11
Unsigned
integer
1 byte
Function of sign reversal
of digital communication
output
0: disable 1: enable
P.5
0
R/W
03 / 16
13
Unsigned
integer
4 bytes
Slave address
1 to 254 (01 to FE)
-
01
R/W
03 / 16
15
Unsigned
integer
1 byte
Communication speed
03: 9.6 kbps 05: 19.2 kbps
-
03
Caution
Continuous reading”and “continuous writing”of items are impossible.
Do not perform writing to other than writable address. Failure to follow this instruction may cause a failure.
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