Haiwell PLC User manual

Xiamen Haiwell Technology Co., Ltd. en.haiwell.com
Load Cell Module User Manual & Application Case
Haiwell PLC User Manual
Classic Programmable Logic Controller

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Contents
Load Cell Module User Manual
1. Product Model List and Dimension ..............................................................................................................................................3
2. Indicator Description....................................................................................................................................................................3
3. Power Supply Specification .........................................................................................................................................................3
4. Environmental Specification.........................................................................................................................................................4
5. Module Parameter Table..............................................................................................................................................................4
6. Load Cell Connections.................................................................................................................................................................4
7. Multiple-load-Cell Parallel Connections .......................................................................................................................................4
8. Terminal connection diagram.......................................................................................................................................................5
9. Module Parameter Table..............................................................................................................................................................5
10. Mounting and Installation...........................................................................................................................................................9
Load Cell Module Application Examples
1. Load Cell Modules Power Supply..............................................................................................................................................10
2. Load Cell Module Operation Procedure.....................................................................................................................................10
3. Hardware Configuration.............................................................................................................................................................11
4. Weight 16-bit/32-bit display switching..........................................................................................................................................11
5.Calibration method and program sample....................................................................................................................................11
6. Read Average-Weight and Real-time Weight.............................................................................................................................13
7. Adjustment for weighing stability and response speed...............................................................................................................14
8. Gross Weight and Net Weight....................................................................................................................................................16
9. Automatic peeling 2AH (Judge every 5S) ..................................................................................................................................17
10. Weighing status .......................................................................................................................................................................17
11. Standstill check function...........................................................................................................................................................17
12. Zero point detection function....................................................................................................................................................18
13. Restore factory default parameters..........................................................................................................................................18
Two. Load Cell Module for remote IO
1. Load Cell Module power supply.................................................................................................................................................19
2. Communication interface introduction........................................................................................................................................19
3. Communication protocol and default parameters.......................................................................................................................19
4. When Module is used for remote IO, Module communication parameter configuration method is introduced as folllows .........19
5. Parameter configuration example: configuring the Module through programming software “remote Module tool”. ...................19
6. Examples of remote IO applications: reading Module real-time weight......................................................................................21
7. Examples of remote IO applications: calibration........................................................................................................................21

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Load Cell Module User Manual
1. Product Model List and Dimension
Model
Power (24VDC)
Dimension
Model
Power (24VDC)
Dimension
H01WG
0.2A
30×95×82mm
H02WG
0.3A
30×95×82mm
0 1 2 3
LINK
PWR
LINK
H01WG
⑧
⑨
①
②
③
④
①
⑤
⑥⑦
⑥
EXC+
EXC-
SHD
SIG+
SIG-
A+
B-
GND
24V
0V
RS485
DC IN
0 1 2 3
PWR
LINK
H02WG
①
②
③
④
①
⑤
⑥⑦
⑥
EXC+
EXC-
SHD
SIG+
SIG-
CH2
0 1 2 3
CH1
CH2
EXC+
EXC-
SHD
SIG+
SIG-
CH1
⑧
⑨
1. Terminal definition
6. Pluggable terminal
2. Weighing status indicator
7. Module expansion port
3. Model
8. Transparent cover of Module terminal
4. PWR:power indicator、LINK:Module communication indicator
9. Module nameplate
5. DIN rail mounting slot
10. 35mm DIN rail
2. Indicator Description
(1) PWR：Power indicator. Green, power is normal; No light - power is abnormal.
(2) Weighing Status Indicator: 0:ON-netweight; OFF-gross weight; 1:ON-No load; 2:ON-weight limit exceeded; 3:ON-measuring
stability.
(3) LINK: Multi-status indicator .three colors(Red. Yellow. Green). As follows:
Reference processing mode
Module bus state
LINK indicator state
Normal
No communication of Module
No light
MPU has identified the Module but no
communication
Constant light in green
Serial or parallel port in communication
Green jitter: indicator on 30ms and off 30ms
Parallel power supply insufficient, must
connect to external power supply
Without serial or parallel port in communication
Yellow flicker: indicator on 0.5s and off 0.5s
With serial or parallel port in communication
Yellow indicator off and jitter alternates: indicator off
0.5s and jitter 0.5s
Firmware upgrade failed, re-upgrade
the Module firmware
Without serial or parallel port in communication
Red flicker: indicator on 0.5s and off 0.5s
With serial or parallel port in communication
Red indicator off and jitter alternates: indicator off
0.5s and jitter 0.5s
Hardware failure
Without serial or parallel port in communication
Always on in red
With serial or parallel port in communication
Red jitter quickly: indicator on 30ms and off 30ms
3.Power Supply Specification
Item
DC Power Supply
Power supply voltage
24VDC -15%~+20%
Power supply frequency
——
Instantaneous surge
MAX 20A 1.5ms @24VDC
Permit Power supply loss
10ms or less
Isolation Model
No Electrical isolation
Power Protection
DC input power polarity reverse, over voltage protection

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4. Environmental Specification
Item
Environment Specification
Temperature/humidity
Operating temperature:0~+55℃Storage temperature:-25~+70℃Humidity: 5~95%RH, No condensation
Anti Vibration
10~57 HZ, amplitude=0.075mm, 57HZ~150HZ acceleration=1G, 10 times each for X-axis, Y-axis and Z-axis
Anti Shock
15G, duration=11ms, 6 times each for X-axis, Y-axis and Z-axis
Anti jamming
DC EFT:±2500V Surge:±1000V
Operating environment
Avoid dust, moisture, corrosion, electric shock and external shocks
5. Module Parameter Table
Item
Specification
Power supply
24VDC±20%，0.2A
A/D conversion method
24Bits △Σ
A/D conversion speed
7.5/15/30/60/120/240/480/960Hz
Internal resolution
24bits
linearity error
Static weighing≤ 0.02% FS
Excitation Voltage
5VDC ±5% , 125mA( it can connect with 4 load Cells each 350 Ω )
Sensor sensitivity
1mV/V~5 mV/V
Load Cell form
4- line connection or 6-line connection load Cells
Maximum distance to
connect the sensor
100 meters
6. Load Cell Connections
Wiring Diagram (First generation load cell module)
4-wire sensor and instrument connection 6-wire sensor and instrument connection
Wiring Diagram (Second generation load cell module)
SIG+
EXC+
SIG-
EXC-
EXC+
EXC-
SIG+
SIG-
4芯传感器与仪表接线图
SHD
传感器 屏蔽电缆
激励正
激励负
屏蔽线
信号正
信号负
SIG+
SIG-
EXC+
EXC-
SHD
SIG+
SIG-
6芯传感器与仪表接线图
传感器 屏蔽电缆
激励正
激励负
屏蔽线
信号正
信号负
EXC+
SEN+
EXC-
SEN-
EXC+
EXC-
4-wire sensor and instrument connection 6-wire sensor and instrument connection
7. Multiple-load-Cell Parallel Connections
8. Terminal connection diagram
Load Cell
Load Cell
Load Cell
Load Cell
Load Cell
Load Cell
Load Cell
Load Cell
Load Cell
Load Cell
Load Cell
Load Cell

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First generation module terminal: Second generation module terminal:
H01WG
24V
0V
A+
B-
DC IN
SIG+
SIG-
GND
RS485
EXC+
EXC-
SHD
H02WG
SIG+
SIG-
EXC+
EXC-
SHD
SIG+
SIG-
EXC+
EXC-
SHD
CH1
CH2
9. Module parameter table (CR code means the corresponding Modbus register address)
Note: CR code is corresponding to the Modbus register address.
CR code(Hex)
communicatio
n address
Function description
Property
Factory
default
Remarks
00H
Low byte for Module code, Higher 3-bit of the High-Byte is ID
number. Lower 5-bit of High-Byte is version number.
R
xxxx
01H
Communication Address
R/W
1
Range：1~247
02H
Communication Protocol
Low byte lower 4-bit：0 - N,8, 2 For RTU
1 - E,8, 1 For RTU
2 - O 8, ,1 For RTU
3 - N,7, 2 For ASCII
4 - E,7, 1 ForASCII
5 - O,7, 1 ForASCII
6 - N,8, 1 For RTU
Low byte higher 4-bit：0 –2400
1 - 4800
2 - 9600
3 - 19200
4 - 38400
5 –57600
6 - 115200
R/W
48
(19200, N,8,
2 RTU）
03H
Module name
R/W
04H
Module name
R/W
05H
Module name
R/W
06H
Module name
R/W
07H
IP Address: default 192.168.1.111
R/W
0x016F
08H
IP Address: default 192.168.1.111
R/W
0xC0A8
09H
Month/date
R
0AH
Year batch number
R
0BH
High byte subnet mask( b3~b0,”1” means 255, “0” means 0, for
example subnet mask 255.255.255.0 b3~b0=1110), low byte
manufacturer code HW
R/W
Low byte code cannot be
modified
0CH
Verification code
R
0DH
Serial number low byte
R
0EH
Serial number high byte
R
0FH
Error Code
0:normal
1: illegal firmware identity
2: firmware incomplete
3:system data access exception
4: No external 24V power supply
R
10H
Channel 1 average weight
R
11H
Channel 1 status code
bit0：No-load( zero point weight)
bit1：exceed the upper limit of weight
bit2：measurement value stable
bit3~15：reserve
R
12H
Channel 1 real-time weight
R
13H
Channel 1 uses 32-bit display flags:
0: 16-bit weight display
1: 32-bit weight display
R/W32
0
14H~15H
Channel 1 Real-time Weight 32 Bit Value:
14H: 32-bit low byte
R
0

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15H: 32-bit high byte
16H~17H
The average weight of channel 1 is 32 bits:
16H: 32-bit low byte
17H: 32-bit high byte
R
0
18H
Channel 1 Skin Weight Low Bytes
R/W
0
16 bits to 18H, 32 bits to
18H19H
19H
Channel 1 Skin Weight High Bytes
R/W
0
1AH
Channel 1 Control Setting
Bit 0: Reservation
Bit 1: Gross/Net Weight Display, 0-Gross Weight, 1-Net Weight
Bit2-15: Reservation
R/W
0
Switch the current display
weight to rough weight or
net weight, us the value of
19H to work as tare weight
1BH
Channel 1 sampling frequency 0-7.5Hz，1-15Hz，2-30Hz，
3-60Hz，4-120Hz,5-240Hz，6-480Hz，7-960Hz
R/W
3
range：0~7
1CH~1DH
Reserve
R
1EH
Channel 1 average number of times
R/W
10
range：1~100
1FH
Channel 1 filter ratio
R/W
2
range：0~5
20H
Channel 1 stability examination times
R/W
5
range：0~500
21H
Channel 1 stability examination range
R/W
10
range：0~10000
22H
Channel 1 zero point tracking intensity
0 :close zero point tracking function
Others: zero-point tracking intensity (absolute value)
R/W
0
Absolute value, range ：
0~200
23H
Channel 1 zero point detection range
R/W
10
Absolute value, range ：
0~10000
24H
Channel 1 upper limit of weight
Set the upper limit value of weight, when measurement value is
over the set value will record error code
R/W
32767
25H
Channel 1 Skin Weight Read (Settings)
At 16-bit display, the current weight value (10H) is read as the
weight value of the leather weight and stored at 18H.
When 32-bit display, read CR16H and CR17H as skin weight Z
value, and store them at 18H and 19H.
R/W
0
0: no operation
1: Read the weight value
as the tare weight and
store it at 18H and 19H.
Others: Invalid
26H
Channel 1 Calibration Weighing Instruction Supports Maximum
3-segment Calibration
Write value 1: Enter calibration mode and zero current average
weight
Write value 2: End the calibration process
-------------------------------------------------------------------------------------
User proofreading steps (16 bits):
Step1: No weights on the weighing unit
Step2: CR26H write value 1, enter calibration mode
Step3: Paragraph 1. Calibration.Add a standard weight to the
weighing unit and write the weight of the current chassis into
CR27H.
Step4: If you need to calibrate the second paragraph, add
another standard weight to the weighing unit and write the weight
on the current chassis to CR29H. If you don't need it, go to
Step6.
Step5: If you need to calibrate paragraph 3, add another
standard weight to the weighing unit and write the weight on the
current chassis into CR2BH. If you don't need it, go to Step6.
Step 6: CR26H Writes value 2 to end the calibration process
-------------------------------------------------------------------------------------
User calibration step (32 bits):
Step1: No weights on the weighing unit
Step2: CR26H write value 1, enter calibration mode
Step3: Paragraph 1. Calibration.Add a standard weight to the
weighing unit and write the weight on the current chassis into
CR27H 28H.
Step4: If the second calibration is needed, add another standard
weight to the weighing unit and write the weight on the current
chassis into CR29H 2AH. If not, go to Step6.
Step5: If you need to calibrate paragraph 3, add another
standard weight to the weighing unit and write the weight on the
current chassis into CR2BH 2CH. If you don't need it, go to
Step6.
R/W
0
Before use, the weight
adjustment should be
completed step by step.

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Step 6: CR26H Writes value 2 to end the calibration process
27H
Low bytes of base weight of weights in channel 1, paragraph 1
R/W
2000
28H
High bytes of base weight of weights in channel 1, paragraph 1
R/W
0
29H
Low bytes of base weight of weights in channel 1, paragraph 2
R/W
0
2AH
High bytes of base weight of weights in channel 1, paragraph 2
R/W
0
2BH
Low bytes of base weight of weights in channel 1, paragraph 3
R/W
0
2CH
High bytes of base weight of weights in channel 1, paragraph 3
R/W
0
2DH
Automatic peeling range of channel 1
R/W
0
2EH
Channel 1 Weight Upper Limit Low Bytes (32 Bit Display)
R/W
32767
2FH
Channel 1 Weight Upper Limit High Bytes (32Bit Display)
R/W
32767
30H~4FH
Reserve
R
0
50H
Channel 2 average weight
R
51H
Channel 2 status code:
bit0：no-load（zero point weight）
bit1：exceed the weight upper limit
bit2：stability of measurement value
bit3~15：reserved
R
52H
Channel 2 Real-time weight
R
53H
Channel 2 uses 32-bit display flags:
0: 16-bit weight display
1: 32-bit weight display
R/W32
54H~55H
Channel 2 Real-time Weight 32 Bit Value:
54H: 32-bit low byte
55H: 32-bit high byte
R
56H~57H
The average weight of channel 2 is 32 bits:
56H: 32-bit low byte
57H:32-bit high byte
58H
Channel 2 Skin Weight Low Bytes
R/W
0
16 bits only use 58H, 32
bits use 58H 59H.
59H
Channel 2 Skin Weight High Bytes
R/W
0
5AH
Channel 2 Control Setting
Bit 0: Reservation
Bit 1: Gross/Net Weight Display, 0-Gross Weight, 1-Net Weight
Bit2-15: Reservation
R/W
0
Switch the current
display weight to wool
Weight or net weight,
used in calculation the
value of 58H and 59H as
tare weight
5BH
Channel 2 sampling frequency 0-7.5Hz，1-15Hz，2-30Hz，
3-60Hz，4-120Hz,5-240Hz，6-480Hz，7-960Hz
R/W
3
range：0~7
5CH-5DH
Reserved
R
5EH
Channel 2 average number of times
R/W
10
range：1~100
5FH
Channel 2 filter ratio
R/W
2
range：0~5
60H
Channel 2 standstill checking times
R/W
5
range：0~500
61H
Channel 2 standtill checking range
R/W
2
range：0~10000
62H
Channel 2 zero tracking intensity
0 :close zero tracking function
others: show zero tracking intensity(absolute value)
R/W
0
Abolute vaule,range ：
0~200
63H
Channel 2 zero-point detection range
R/W
10
Abolute vaule,range ：
0~10000
64H
Channel 2 weight upper limit
Set the upper limit value of weight, when measurement value is
over the set value will record error code
R/W
32767
65H
Channel 2 Skin Weight Read (Settings)
When 16-bit display, read the current weight value (50H) as the
weight value of the leather weight and store it at 58H.
When 32-bit display, read CR56H and CR57H as skin weight Z
value and store them at 58H and 59H.
R/W
0
0: no operation
1: Read the weight value
as the tare weight and
store it at 58H 59H.
Others: Invalid

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66H
Channel 1 Calibration Weighing Instruction Supports Maximum
3-segment Calibration
Write value 1: Enter calibration mode and zero current average
weight
Write value 2: End the calibration process
-------------------------------------------------------------------------------------
User proofreading steps (16 bits):
Step1: No weights on the weighing unit
Step2: CR66H write value 1, enter calibration mode
Step3: Paragraph 1. Calibration.Add a standard weight to the
weighing unit and write the weight on the current chassis into
CR67H.
Step4: If you need to calibrate the second paragraph, add
another standard weight to the weighing unit and write the
weight on the current chassis to CR69H. If you don't need it, go
to Step6.
Step5: If you need to calibrate paragraph 3, add another
standard weight to the weighing unit and write the weight on the
current chassis into CR6BH. If you don't need it, go to Step6.
Step 6: CR66H write value 2, end calibration process
-------------------------------------------------------------------------------------
User calibration step (32 bits):
Step1: No weights on the weighing unit
Step2: CR66H write value 1, enter calibration mode
Step3: Paragraph 1: Calibration.Add a standard weight to the
weighing unit and write the weight on the current chassis into
CR67H 68H.
Step4: If the second calibration is needed, add another standard
weight to the weighing unit and write the weight on the current
chassis into CR69H 6AH. If not, go to Step6.
Step5: If the calibration of paragraph 3 is required, add another
standard weight to the weighing unit and write the weight on the
current chassis into CR6BH 6CH. If not, go to Step6.
Step 6: CR66H write value 2, end calibration process
R/W
0
Before use, the weight
adjustment should be
completed step by step.
67H
Low bytes of base weight of weights in channel 2, paragraph 1
R/W
2000
68H
High bytes of base weight of weights in channel 2, paragraph 1
R/W
0
69H
Low bytes of base weight of weights in channel 2, paragraph 2
R/W
0
6AH
High bytes of base weight of weights in channel 2, paragraph 2
RW
0
6BH
Low bytes of base weight of weights in channel 2, paragraph 3
RW
0
6CH
High bytes of base weight of channel 2, paragraph 3
RW
0
6DH
Automatic peeling range of channel 2
RW
0
6EH
Channel 2 Weight Upper Limit Low Bytes (32Bit Display)
RW
32767
6FH
Channel 2 Weight Upper Limit High Bytes (32Bit Display)
RW
32767
70H-9EH
Reserved
R
0
9FH
Restoring factory parameters of configurable CR
RW
1
The default value is 1 and
0 is written to the CR to
restore the factory
parameters of the
configurable CR.

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10. Mounting and Installation
The PLC should be secured to an enclosed cabinet while mounting. For heat dissipation, make sure to provide a minimum
clearance of 50mm between the unit and all sides of the
cabinet.
Rail mounting: Use standard 35 mm rail.
Screw mounting: Each MPU or extension Module has two
positioning screw holes, the diameter of the hole is 4.5mm.
Please refer to the dimension figure for the location of the
positioning holes and their spacing.
To avoid over temperature and for a better heat dissipation,
do not mount PLC to a position near to the bottom/top of the
cabinet. Do not mount PLC in vertical direction.
Extension Module wiring: Connections between extension Modules and connections between Module and MPU are achieved
through bus.A extension cable will be configured to every extension Module, for the connection between two different
Modules.Connection methods: turn the right side of extended interface(the last MPU or extension Module) over, plug the
extension cable in the extended interface, then press down the cover of the extended interface to reset the interface, the extended
interface at the right side of the Module will be reserved for extension of the next Module. Connect all extension Modules in turn in
the same way.

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Application example of load Cell Module
One. The Module is extended through the parallel port of the host
(The sample program is H01WG and H02WG 1 channel program, the method of using 1, 2 channels is the same, as long as the
CR number is changed to the corresponding value of the second channel.)
1. Load Cell Modules Power Supply
All expansion Modules of Haiwell do not require external power supply, can be directly powered by the parallel port of the host.
If the PLC is 24VDC power supply, the external switching power supply is supplied to the host, and the extensions are powered by
the parallel port from the host plc. The Module power supply is essentially from the external switch power supply, so the Module
needs no additional external power supply. If the expansion Module has insufficient power supply (the PWR light on the Module is
not bright), the external switching power supply capacity is not enough. The correct approach is to enlarge the power supply of the
external switch power.
If the host PLC is 220VAC power supply, the extension Modules are powered by the parallel port from the host plc, the expansion
Module does not need to connect the external power supply; if the expansion Module is in insufficient power supply (the PWR
lamp on the Module is not bright), the correct approach is to supply the power supply Module only by a single switch power supply.
(This case happens when the number of expansion Modules is too big and external loads are too much).
Haiwell extension Module can be used as remote IO, so it will not be restricted by the number of system I/O points, and can be
installed distributively, reducing cable wiring and solving the problem of interference caused by the long distance of traditional
wiring. When Modules are used as remote IO, they need power to be supplied externally The external power supply of the Module
is optional with 24VDC and 220VAC.
2. Load Cell Module Operation Procedure
When we get the weighing Module.
The first step: Calibration. The weight can be read directly after calibration.

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The second step: Read the weight. One is average weight and the other is real-time weight. We usually read average weight.
The third step: Adjust the stability and responsiveness of weighing. The above two factors affect the sampling frequency, average
number and filtering rate. Therefore, we can adjust the above three parameters get proper stability and responsiveness .
The fourth step: In order to make the usage more convenient, we also provide the status-value for the load Cell Module,if the
current status is like no-load, exceeding the upper limit, or value measurement with stability. We can achieve the automatic
judgment control of weighing. At the same time, it also has the functions of gross weight setting, zero-point tracking, automatic
tare-removing, and so on.
To introduce the weighing Module programming and practical use.
3. Hardware Configuration
In this case, the host is N40S2T, with a load Cell Module, so the hardware configuration is as follows:
4.Weight 16-bit/32-bit display switching
Module weight 16-bit display and 32-bit weight display are two modes. Take Channel One as an example, 16-bit/32-bit weight
switching can be realized by CR13H, 16-bit display for 13H writing 0 and 32-bit display for writing 1. The program example is as
follows.
5.Calibration methods and program examples
The weighing module supports three-stage calibration and can realize multi-range and one-time scale calibration. Taking Channel
1 as an example, the calibration steps are as follows:
User operation steps:
Step1: No weight is put on the weighing unit.
Step2: CR26H write value 1, enter the calibration mode;
Step3: In the first paragraph, a standard weight is added to the weighing unit, 16-bit scale writes the weight on the current chassis
into CR27H, 32-bit scale writes into CR27H and CR28H, if no multi-stage calibration criteria are needed to Step6;
Step4: If the second calibration is needed, add another standard weight to the weighing unit, 16-bit scales will write the weight on
the current chassis into CR29H, 32-bit scales will write into CR29H and CR2AH, if there is no need for multi-stage calibration
criteria to Step6;
Step5: If you need the calibration in paragraph 3, add another standard weight to the weighing unit, 6-bit scales will write the
weight on the current chassis into CR2BH, 32-bit scales will write into CR2BH and CR2CH, if not to Step6;
Step6: CR26H writes value 2 to end the calibration process.
Examples of multi-section calibration procedures are as follows:

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An example of 32-bit multi-segment calibration program is as follows:

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6. Read the current weight
The weight read by module is divided into average weight and real-time weight. Usually we read average weight. The
average weight CR of 16 bits is 10H, and the real-time weight CR of 16 bits is 12H. The program example is shown below.

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The average weight CR of 32 bits is 16-17 H, and the real-time weight CR of 32 bits is 14-15 H. The sample program is as
follows.
7. Adjustment of stability and responsiveness of weighing value
The stability and responsiveness of the weight read by the module will be adjusted according to different requirements in practical
applications. The two factors that affect the stability and responsiveness of the module are sampling frequency, average number
of times and filtering ratio. So we can adjust the above three parameters to achieve the adjustment of stability and
responsiveness.
1BH: Sampling Frequency
Sampling frequency, that is, the number of sampling times in one second, such as 1BH = 3, that is, 60 times of weight in one
second. The quicker the sampling times are, the faster the average calculation is, so the quicker the average and real-time
weights of weighing are updated. But the stability decreases with the increase of sampling times.

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1FH: Filtering Ratio
The larger the register value is, the larger the filtering ratio is, the more stable the average weight value (10H), but the delay will
increase and the sensitivity will decrease. The function of filtering is to filter the abrupt change so that the average value of the
filter can not be affected by the abrupt change. The filtering scale ranges from 10% to 50%. The default is 2, that is, 20%,
assuming the average number of times is 10, then the system will arrange the 10 data collected from large to small, and the
filtering ratio is 20%. That is to say, two data will be screened out, that is, one maximum value will be removed, another minimum
value will be removed, and finally an average value will be obtained.
1EH: Average Number
The larger the register value, the more the number of samples, the more accurate the average weight (10H), but the slower the
update speed. The default is 10, that is, every 10 weight data collected, the average value is calculated once and the average
weight is updated.

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8. Gross Weight and Net Weight
1. When the value of 25H is written to 1 and the weight value is 16-bit display, the current 16-bit weight value (10H) is read as the
weight value of the leather weight, and the weight value is read as the weight value of the leather weight; when stored in 18H and
the weight value is 32-bit display, the current 32-bit weight value (16H 17H) is read as the weight value of the leather weight, and
stored in 18H and 19H.
2, 18H, 19H store the skin weight value.
3. Enable control settings. It is controlled by Bit1 bit of 1AH. Bit1 = 0 - Gross weight, Bit1 = 1 - net weight. Switching the current
display weight to gross or net weight, the calculation uses the value of 18H (16 bits)/18H19H (32 bits) as the tare weight.
Value is written
to 18H as tare
Current net weight, net weight =
real weight - gross weight
IAH Bit1=1
Write 1 to 25
IAH Bit1=0
Current gross weight, gross
weight = real weight

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9.Automatic peeling 2DH (judged every 5S)
The weighing platform or equipment will cause dust or residue scattering during weighing process, which will cause the platform to
peel automatically when the current weight is not zero without placing any weighing items. If the automatic peeling function is
used, as long as the current weight is less than the set automatic peeling weight 2DH value, the weighing module will peel
automatically the current value.
10. Weighing status
The module weighing block can also determine the status of the scale and record the special CR register 11H. The status code of
11H is as follows:
Bit0: When the bit is 1, it means that the weighing unit is in no-load state, and the judgment range of no-load is set on CR 23H.
Bit1: When this bit is 1, it means that the upper load of the weighing unit exceeds the set upper weight limit, and the upper weight
limit CR is 24H.
Bit2: When this bit is 1, it means that the measurement of weighing unit reaches a stable state, and the range value of stability
judgment and the number of checks are on 20H and 21H.
Each state can convert the value of register into place with wtob instruction for quick check.
11.Standstill check function
When the item is placed on the load Cell to measure weight, the standstill check function can be used to know whether the current
measurement is stable.
if the amplitude of the measured value is within the checking range set by CR 21H, the relevant Bit of CR11H will be set to 1.
If the measured value exceeds the set range of standstill, the relevant stable-Bit of the CR 11H will be set to 0, until the standstill
check number 20H is within the checking range, and the relevant stable-Bit of the CR 11H will be then set to 1.
For example, the measurement time is 10ms, the standstill check times is set to 10 times, the checking range is 1000, when the
variation range exceeds 1000, the measurement value is unstable, that is, the relevant stable-Bit of CR 11H will be set to 0, when

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the 100ms (10*10ms) variation range is within the checking range 1000, the relevant stability-Bit will be reset to 1 again. It is
recommended to judge the stability before controlling it.
12.Zero point detection function
Zero point tracking is related to address CR22H and CR23H.
Zero tracking density for CR 22H Channel 1. 0: close zero point tracking function; other values (absolute value) for zero tracking.
Under normal circumstances, it shows 0 after calibration. Sometimes, however, there is a small fluctuation due to equipment jitter
and other reasons. This fluctuation range is defined as 0 if it is in the tolerable range set by CR22H.
13.Restore factory default parameters
The default parameter to restore the factory is CR 9FH register.The CR will remain at 1 during normal operation. When the factory
value is restored, write CR to CR[159], and then restore the factory value after re-powering.
Recoverable CR include:
1.32-bit display [CR19/CR83] (0/16-bit display)
2. Skin weight [CR24 25/CR88 89] (0)
3. Gross/Net Weight Display [CR26/CR90] (0/Gross Weight)
4. Automatic peeling range [CR45/CR109] (0)
5. Sampling frequency [CR27/CR91] (2/30Hz)
6. Average number of times [CR30/CR94] (10)
7. Filtering Proportion [CR31/CR95] (2)
8. Number of stability checks [CR32/CR96] (5)
9. Stability check range [CR33/CR97] (2)
10. Zero Judgment Scope [CR35/CR99] (10)
11. Weight upper limit [CR36/CR100] (32767)
12. Zero tracking strength [CR34/CR98] (0)
13. Channel 1 and 2 base point weights 1 low byte [CR39/CR103] (2000)
14. Channel 1 and 2 base weight 1 high byte [CR40/CR104] (0)
15. Channel 1 and 2 base weight 2 high and low bytes [CR41 42/CR105 106] (0)
16. Channel 1 and 2 base weight 2 high and low bytes [CR43 44/CR107 108] (0)
Two. Load Cell Module for remote IO
Haiwell extension Module has a RS485 communication port (part models with additional Ethernet communication interface),
which supports parallel bus (the parallel interface with PLC host by extending the extension bus) and the serial bus (using the
RS485 communication port with the communication port of the PLC, the host plc using the communication instruction to control
the remote Module). When you use the serial connection, then the remote IO Module is not limited by system IO points, and can
be distributively installed.
It is very important for Distributed installation to collect or monitor a large number of discrete DI/DO or analog signals

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(temperature, humidity, pressure, air volume, flow, fan speed, valve opening and so on). The Distributed installation control and
unrestricted expansion are easily realized, which greatly improves the control system. It reduces the wiring cost of all kinds of
signals, and reduces the interference caused by the over-length of the analog signal line.
Next, we will introduce remote IO usage.
1. Load Cell Module power supply
When load Cell Module is used for remote IO，24VDC external switch power supply, PWR indicator light is on.
2. Communication interface introduction
H01WG has the RS485 interface.
3. Communication protocol and default parameters
RS485：
It supports standard Modbus RTU/ASCII protocol, and it can communicate with any third-party devices, such as PC scada, touch
screen, text display and PLC, which support Modbus protocol.
Soft address: by programming software, the address set by remote tool, the address range 1-254, the default value is 1;
Baud rate: 2400, 4800, 9600, 19200, 38400, 57600, 115200 optional;
Data format: N，8，2 RTU、E，8，1 RTU、O，8，1 RTU、N，8，1 RTU、E，7，1 ASCII、O，7，1 ASCII、N，7，2
ASCII
RS485 default parameters: 19200, N 82 RTU, station number 1.
4.When Module is used for remote IO, Module communication parameter configuration method is introduced as
folllows：
There are three methods for remote IO parameter configuration:
①It can be configured by programming software tool remote Module (recommended).
②The Module can be connected to the host plc by parallel port and configured by hardware configuration and TO instruction.
③The Module can be configured by MODW instruction through serial communication
5.Parameter configuration example: configuring the Module through programming software “remote Module tool”.
Hardware connection
①.through the RS485 (A+ B- terminal) connection: the computer with the serial port, can use 232 to 485 converter, if the PC with
USB interface, you can use USB to 485 converter.
②.connect via Ethernet + communication interface: the Module can connect directly to the computer network port with standard
network cable, or the computer and Module will be connected to the Ethernet switch.
Software operation steps
Click on the software menu bar - "remote Module":

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The default address of the Module is 1 with format 19200, N 82 RTU, and the online success is as follows:
If there is only one plc on the 485 port, then you can use “find standalone”. If there are many, set the start address and stop
address, so that all the machines on the 485 port can be found and the parameters are configured. Click exit to enter the
configuration interface.
In the communication parameter area, we can change the Module's name, address, baud rate and data format and other