Savch SMC-W01EN User manual

SAVCH Programmable Logic Controller
Load Cell Module
User Manual & Application Case
User Manual

Contents
Chapter 1 User Manual ............................................................................................................................................1
1. Products receiving.........................................................................................................................................1
2. Model description..........................................................................................................................................1
3. Product model list & dimensions...................................................................................................................1
4. Front / side view............................................................................................................................................2
5. Indicator Description .....................................................................................................................................2
6. Power Supply Specification...........................................................................................................................3
7. Environmental Specifications for Product.....................................................................................................3
8. Module Parameter Table...............................................................................................................................3
9. Load Cell Connections..................................................................................................................................3
10. Multiple-load-Cell Parallel Connections......................................................................................................4
11. Terminal connection diagram ......................................................................................................................4
12. Module parameter table (CR code means the corresponding Modbus register address).........................5
13. Mounting and Installation..........................................................................................................................11
Chapter 2 Application Case....................................................................................................................................12
1. The Module is extended through the parallel port of the host ....................................................................12
1.1 Load Cell Modules Power Supply......................................................................................................12
1.2 Load Cell Module Operation Procedure............................................................................................12
1.3 Hardware Configuration.....................................................................................................................13
1.4 Weight 16-bit/32-bit display switching ...............................................................................................13
1.5. Calibration methods and program examples....................................................................................13
1.6 Read the current weight.....................................................................................................................16
1.7 Adjustment of stability and responsiveness of weighing value..........................................................16
1.8 Gross Weight and Net Weight...........................................................................................................18
1.9 Automatic peeling 2DH (judged every 5S) ........................................................................................19
1.10 Weighing status................................................................................................................................19
1.11 Standstill check function...................................................................................................................19
1.12 Zero point detection function...........................................................................................................20
1.13 Restore factory default parameters.................................................................................................20
2. Load cell module for remote IO...................................................................................................................21
2.1 Load Cell Module power supply ........................................................................................................21
2.2 Communication interface introduction...............................................................................................21
2.3 Communication protocol and default parameters..............................................................................21
2.4 When Module is used for remote IO, Module communication parameter configuration method is
introduced as folllows:..............................................................................................................................21
2.5 Parameter configuration example:configuring the Module through programming software “remote
Module tool”. ............................................................................................................................................21
2.6 Examples of remote IO applications:reading Module real-time weight.............................................23
2.7 Examples of remote IO applications: calibration...............................................................................23

1
Chapter 1 User Manual
1.1 Products receiving
All products have been performed with strict test and inspection. After receiving the inverters, the following
checks shall be performed.
●To check that SAVCH inverter, an instruction manual is inside of the package
●To check whether model number correspond with model your purchase order.
●To check whether there are damaged parts during transportation and delivering. If there are, do not connect
with power supply.
If any of the above checkpoints are not satisfactory, contact your SAVCH ELECTRIC representative for a quick
resolution.
1.2 Model description
Programmable
Logic Controller
Model：SMC-W01EN
Power：DC24V 0.2A
P/N：1605261053011810012
SAVCH ELECTRIC CO.,LTD.
Product name
S M C - W 01 E N
Product Series
W (Load cell)
Output type
N (No digital I/O)
Module type
M (Main)
E (Extension module)
I/O point
1.3 Product model list & dimensions
Model
Power Consumption
Dimension
SMC-W01EN
0.2 A
30×95×82mm
SMC-W02EN
0.3 A
123
LINK
PWR
0
SMC-W01EN
35.0
95.0
30.082.0

2
1.4 Front / side view
0 1 2 3
PWR
LINK
SMC-W02EN
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. Module nameplate
4. PWR:power indicator,
LINK:Module communication indicator
9. 35mm DIN rail
5. DIN rail mounting slot
1.5 Indicator Description
(1) PWR:Power indicator. Green, power is normal; No light - power is abnormal.
(2) 0:ON:gross weight; 1:ON:net weight;
2:ON:tare weight; 3:ON:calibration.
(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
1.6 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
1.7 Environmental Specifications for Product
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
1.8 Module Parameter Table
Item
Specification
Power supply
24VDC±20%,0.2A
A/D conversion method
24Bits △Σ
A/D conversion speed
6.25/12.5/25/50/100/200/500Hz
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
Measurement pulse
0~2000Hz 24VDC
Load Cell form
4- line connection or 6-line connection load Cells
Maximum distance to connect the
sensor
100 meters
1.9 Load Cell Connections
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
4-wire sensor and instrument connection

4
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-
6-wire sensor and instrument connection
1.10 Multiple-load-Cell Parallel Connections
Load cell
Load cell
Load cell
Load cell
SMC-W01EN-
Load cell
Load cell
Load cell
Load cell
SMC-W02EN Load cell
Load cell
Load cell
Load cell
CH2
CH1
1.11 Terminal connection diagram
SMC-W01EN
24V
0V
A+
B-
DC IN
SIG+
SIG-
GND
RS485
EXC+
EXC-
SHD
SMC-W02EN
SIG+
SIG-
EXC+
EXC-
SHD
SIG+
SIG-
EXC+
EXC-
SHD
CH1
CH2

5
1.12 Module parameter table (CR code means the corresponding Modbus
register address)
Note:CR code is corresponding to the Modbus register address.
CR code(Hex)
communication
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 For ASCII
5 - O,7, 1 For ASCII
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

6
CR code(Hex)
communication
address
Function description
Property
Factory
default
Remarks
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
15H:32-bit high byte
R
0
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

7
CR code(Hex)
communication
address
Function description
Property
Factory
default
Remarks
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.
Step 6:CR26H Writes value 2 to end the
calibration process
R/W
0
Before use, the
weight adjustment
should be completed
step by step.
27H
Low bytes of base weight of weights in
channel 1, paragraph 1
R/W
2000

8
CR code(Hex)
communication
address
Function description
Property
Factory
default
Remarks
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 (32
Bit 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