Excell 120S User manual

User Manual
120S
© Excell Precision Limited 2021. All rights reserved worldwide.
The information contained herein is the property of Excell Precision Limited and is supplied
without liability for errors or omissions. No part may be reproduced or used except as
authorised by contract or other written permission. The copyright and the foregoing restriction
on reproduction and use extend to all media in which the information may be embodied.

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TABLE OF CONTENTS
Safety...........................................................................................................................................3
Features.......................................................................................................................................3
Chapter1 FrontandRearPanelSpecifications..................................................................................4
1-1 Front panel......................................................................................................................4
1-2 Rear panel......................................................................................................................4
1-3 Keypad Description.........................................................................................................5
1-4 Specification ...................................................................................................................5
1-5 Display Firmware Version...............................................................................................6
Chapter 2 General Function Guide..............................................................................................7
2-1 Function Setup and Operation Procedures.....................................................................7
2-2 Error Messages (Display in General Function setting)....................................................8
2-3 Function Setting .................................................................................10
2-4 Set internal calibration password (FNC-16)..................................................................13
Chapter 3 Calibration.................................................................................................................14
3-1 Load Cell Connection ...................................................................................................14
3-2 Parameter Setting and Calibration Flow Chart..............................................................15
3-3 MODBUS Calibration....................................................................................................17
3-4 Specification calibration ......................................................................18
3-5 General Calibration ............................................................................20
3-6 Linearity calibration ............................................................................21
3-7 Digital calibration ............................................................................23
Chapter 4 Weight Comparison Procedures................................................................................24
4-1 Function Configuration Menu........................................................................................24
4-2 Check Weighing Configuration .....................................................................................27
4-3 Batching Signal Outputs...............................................................................................30
4-4 Normal batching flow chart (SQ-01=1)..........................................................................31
4-5 Loss-in Weight flow chart (SQ1=2)...............................................................................32
4-6 Hi, OK, Lo output flowchart...........................................................................................33
4-7 Normal batching (built-in program) flowchart (SQ-01=4) ..............................................34
4-8 Loss-in Weight (built in program) (SQ-01=5)................................................................35
4-9 Hold mode (SQ-01 = 6).................................................................................................36
4-9-1 Hold mode flow chart..........................................................................................37
4-9-2 Hi, OK, Lo comparison .......................................................................................38
4-10 Totalizing (ACCU.) Auto / Transmit .............................................................................38
Chapter 5 Interface....................................................................................................................39

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5-1 Serial Input / Output Interface (default OP-01) .............................................................39
5-2 BCD parallel output interface (OP-02) ..............................................48
5-3 Analogue Current / Voltage Output Interface (OP-03)...................................................50
5-4 External Parallel Input / Output Interface......................................................................52
Chapter 6 Maintenance..............................................................................................................57
6-1 Restore All Parameters to Their Default Factory Values...............................................57
6-2 Maintenance Function Parameters...............................................................................57
6-2-1 Restore the function parameter back to its default value....................................58
6-2-2 Clear zero compensation and TARE values.......................................................58
6-2-3 Clear batch setting .............................................................................................58
6-2-4 Display zero voltage (mV/V)...............................................................................58
6-2-5 Clear batch setting .............................................................................................58
6-3 Test mode.....................................................................................................................59
6-3-1 7-Segment display testing..................................................................................60
6-3-2 Keypad and calibration SW testing.....................................................................60
6-3-3 Display A/D internal value display ......................................................................60
6-3-4 RS-232 serial loop back testing..........................................................................60
6-3-5 EEPROM memory testing ..................................................................................60
6-3-6 Option interface card testing...............................................................................60
Appendix 1 Description of 7-Segment Characters.....................................................................62
Appendix 2 Function Table.........................................................................................................63
Appendix 3 MODBUS Data Address Table I ..............................................................................72
Appendix 4 MODBUS Data Address Table II .............................................................................73
Appendix 5 Examples for Input and Output of Modbus..............................................................74
Check Firmware Version
During power-on countdown, press key to display firmware version
040112XX, where XX is maintenance number.

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!
Safety
When the instrument is installed, connect an earth bonding conductor from FG to the earth
connection marked “ ”.
Disconnect the mains power supply before opening the instrument housing.
To install the optional interface cards, it is necessary to disconnect the mains power supply
and fit a yellow/green earth bonding cable to the rear panel.
Before turning the power on ensure the supply voltage is within the acceptable range,
AC100V ~ 240V 50/60HZ.
The operating ambient temperature range is 0 oC ~ 40 oC (32 °F ~ 104 °F).
Features
120S has a wide range of applications from batching to simple weighing.
Features:
Stand alone batching mode or connect to PLC for external system control
Built in batching / dosing functions
Manual / automatic discharge operation
Set cycle times in a batch
Totalise weight and number of cycles
Key in the signal voltage value (mV / V) directly via the keypad, no need to apply
any weight to the bottom work to calibrate the weigher
Display load cell output voltage (mV / V) for future maintenance
Adjustable filter
RS232C bi-directional and RS485 communication
Built in MODBUS
Interface options:
OP-01 RS-422 / RS-485 / RS-232 serial interface
OP-02-1 BCD parallel output interface (Open collector output)
OP-02-2 BCD parallel output interface (TTL output)
OP-03 16 Bit Analogue current/voltage output interface
(4 ~ 20 mA / 0 ~ 10 V)
OP-04 Control I/O (4 In / 4 Out) + Setpoint In (BCD code)
OP-05 Control I/O (8 In / 8 Out)

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Chapter 1 Front and Rear Panel Specifications
1-1 Front panel
Display
6 digits, bright red, 7 segment LED display, character height 16mm (0.63”).
Display can be switched between Gross Weight / Net Weight / Totalised Weight /
Number of transactions in the total.
Indication icons “◄”
ZERO
◄
:
Zero Indication
MD
◄
:
Unstable weight Indication
GROSS
◄
:
Gross weight Indication
NET
◄
:
Net weight Indication
The indicator is supplied with suitable labels to customise the icon displays.
Refer to FNC-06 ~ FNC-09 for the various options available.
Weighing Units
Weighing Units kg / g / t / lb.
1-2 Rear panel
Calibration Switch set to the left is “OFF” and to the right is “ON”
Terminal Block
Calibration Switch
13 Way Terminal Block
1st
FG
2nd
AC IN
3rd
AC IN
4th
NC
5th
TX
6th
RX
7th
SG
8th
EXC+
9th
SEN+
10th
SEN-
11th
EXC-
12th
SIG +
13th
SIG -
重量單位
數字顯示區
指示符號
Display Area
Weight Unit
Indication

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1-3 Keypad Description
:
When entering data or reference setting, it means “ESC”.
In the normal operation, it puts the indicator in standby mode or escape.
Entering standby mode: All of the display (except ZERO “” symbol)
and serial data output are disabled.
Escape from standby mode: Re-power on mains for normal operation.
Function FNC-03 can be used to selectively disable individual keys.
Zero operation, will be limited by functions CSP-05 and CSP-10.
Zero operation, will be limited by functions CSP-10 and CSP-11.
1-4 Specification
A/D Conversion
* Input Sensitivity
* Internal Resolution
* Max. Sampling Speed
* Application Range
* Load Cell Excitation Voltage
: Over 0.12μV/d
: 1 / 1 000 000
: 120 times/s.
: - 0.1 ~ 4.0 mV / V
: 5 V DC ±5%, 120 mA
(Up to eight (8) 350 Ω load cells can be connected)
Power supply
AC 100V ~ 240V 50/60Hz
Power consumption is about 10 VA
:
When parameter setting, it moves the flashing digit left.
In the normal mode, it performs a Zero operation.
:
When parameter setting, it moves the flashing digit right.
In the normal mode, it performs a semi-auto Tare operation.
:
When parameter setting, it increments the flashing digit or steps up the
select item.
In the normal mode, it accesses the FNC-05 setting.
During power-on countdown, press this key to display firmware version.
:
When parameter setting, it decrements the flashing digit or steps down
the select item.
In the normal mode, it accesses the FNC-04 setting.
:
Confirm / enter key.

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Dimensions
1-5 Display Firmware Version
During power-on countdown, press to display firmware version.

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Chapter 2 General Function Guide
2-1 Function Setup and Operation Procedures
Function
Operation
Display
Description
Enter calibration mode
Turn the calibration switch to “ON”
See 3-2 for details
Enter function setting
Press not release,
then press key
after the power is turned on
See 2-2 for details
Reset all parameters
back to default
Turn the power on then turn the
calibration switch to “ON” then
press and hold the
and keys during the
self-testing sequence
.
See 6-1 for details
Reset general function
parameters back to
default
Turn the power on and
press and keys
during self-testing sequence
See 6-2-1 for details
Clear zero point
compensation and tare
value
Turn the power on and
press and keys
during self-testing sequence, and
then press key
See 6-2-2 for details
Clear setpoint parameter
setting
Turn the power on and
press and keys
during self-testing sequence, and
then press two times
See 6-2-3 for details
Value of zero point
voltage(mV / V)
Turn the power on and
Press and ,then
press key three times
See 6-2-4 for details
Value of Span voltage
(mV / V)
Turn the power on and
Press and , then
Press key
See 6-2-5 for details
Entering to test mode
Turn the power on and
press and keys
during self-testing sequence
.
See 6-3 for details

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Function
Operation
Display
Description
Check weighing setpoint
parameter setting
Press the key to set
the parameter of FUNC.4 to 1 in
the normal mode
.
or
.
See 4-2 for details
Key actions in function set up mode
Increases the number of the flashing digit
Decreases the number of the flashing digit
Moves the flashing digit one space to the left
Moves the flashing digit one space to the right
Saves the configuration
Quits set up mode / Escape
2-2 Error Messages (Display in General Function setting)
. Load Cell output voltage - 0.1m V / V or 4mV / V
. Weight value previous weight value
. Actual measured weight value previous weight value
. Setting value 0
. mV / V value entered measuring range
. mV / V value entered is too small (SPAN –Zero 0 mV / V)
. Displayed resolution is less than 0.12 V / division

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Function Setting
First Serial Port Interface
Second Serial Port
Interface
BCD Parallel Port output
interface
Analogue current / voltage
output interface
External parallel control
input interface
External parallel trip output
interface
Function Setting Procedures
With weight displayed press and hold the key. Then, press key
See 5-1 for details
See 5-2 for details
See 5-3 for details
See 5-1 for details
See Function Setting 2-2
for details
See Chapter 4 for details
See 5-4 for details
See 5-4 for details
Set Point Procedure

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2-3 Function Setting
Press key
Input desired
Parameter code
Press key
Display shows the
previous parameter
code. Input the new
code as required
Press key
To continue the next function setting
or press key to escape
Increment flashing digit
Decrement flashing digit
Move flashing point left
Move flashing point right
Store data in memory
Exit / Escape
*Function Parameter code
Digital Filter I
Digital Filter II
Lock keypad function
“F” function setting
“F1” function setting
Front panel indication “◄” setting (first)
Front panel indication “◄” setting (second)
Front panel indication “◄” setting (third)
Front panel indication “◄” setting (fourth)
Terms of back to zero
Hold
Rate for display rewrite
Turn-on zero setting
Stand-by mode setting
Zero function record setting
Internal calibration password setting
Turn on/off watchdog

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FNC Group function setting
Item
Function
Setting value
Default
Parameter
Description
FNC-01
Digital Filter I
0
5 Hz
4
1
4.17 Hz
2
2.5 Hz
3
2.08 Hz
4
1.25 Hz
5
1.04 Hz
6
0.63 Hz
7
0.52 Hz
8
0.31 Hz
9
0.26 Hz
FNC-02
Digital Filter II
0
Disabled
2
1
Less filter
Greater
2
3
4
5
FNC-03
Key –Locked
000000

111111
0
Normal
(lock disable)
The bits and front
panel key
positions are
related to each
other
000000
1
Close
(lock enable)
FNC-04
“F” function setting
Parameter Description
0Display Net / Gross weight
1Setpoint parameter setting
2Tare reset
3Manual serial, parallel print output
4Start load
5Stop load
6Start comparison
7Unload command
8Totalise weight and counts
command
9Clear totalised weight and counts
10 Hold mode
11 Escape Hold mode(I / O DSP)
12 Convert to Gross / Net / totalised
weight / totalised Count
1
FNC-05
“F1” function setting
0

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Item
Function
Setting value
Default
Parameter
Description
FNC-06
Front panel indication “◄”
setting (top)
Parameter Description
0Zero
1MD
2Gross
3Net
4Totalised weight (Accu. V)
5Totalised transactions (Accu. C)
6SP1
7SP2
8SP3
9Hi
10 OK
11 Lo
12 Under
13 Over
14 Discharge
15 Running
16 Hold
0
FNC-07
Front panel indication “◄”
setting (next to top)
1
FNC-08
Front panel indication “◄”
setting (next to bottom)
2
FNC-09
Front panel indication “◄”
setting (bottom)
3
FNC-10
Return to zero band
(d: refer to CSP-03)
0
5 d
0
1
10 d
2
20 d
3
40 d
4
60 d
5
80 d
6
100 d
7
150 d
8
200 d
9
250 d
FNC-11
Hold
0
Hold
0
1
Peak hold (positive 1)
2
Peak hold (negative)
3
Peak hold (absolute value)
4
Peak hold (positive 2)
FNC-12
Rate for display rewrite
0
No limitation
0
1
20 times/s
2
10 times/s
3
5 times/s
4
1 time/s

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Item
Function
Setting value
Default
Parameter
Description
FNC-13
Turn-on zero setting
0
Disable
0
1
Enable
FNC-14
Stand-by mode setting
0
Disable all the functions under
stand-by mode
0
1
Only turn off display but not
disable other functions under
stand-by mode
FNC-15
Zero function record
setting
0
Zero point record not saved into
EEPROM
0
1
Zero point record saved into
EEPROM
FNC-16
Internal calibration
password setting
0000
No password
0000
0001
Password is set
FNC-17
Turn on/off watchdog
1
Turn on watchdog
1
0
Turn off watchdog
2-4 Set internal calibration password (FNC-16)
The default value of FNC-16 is 0000, which means internal calibration without password. To
set a password, enter 4-digit numbers (other than 0001, 0000) and press confirm key to
complete. If password is set to 0001, error message “UN.VALI”will appear.
If password has been set, FNC-16 will display 0001. To change password, it must enter
the previously set password first. If entered password is wrong, it displays “PW ERR”. If entered
password is correct, it displays “NEW PW”and then enters 4-digit numbers (other than 0001) for
new password or enters 0000 to remove password. If password is forgotten, it must reset to
factory setting.

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Chapter 3 Calibration
3-1 Load Cell Connection

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Specification
Calibration
Linearity Calibration
Digital Calibration
MODBUS
Calibration
3-2 Parameter Setting and Calibration Flow Chart
FNC-16= 0000 ? N
Y
wrong
reset
Calibration
Switch ON
Calibration Switch
OFF
Calibration
Completed
Enter 4 digits
password
Zero point
Calibration
Weight Calibration
Select 1 Point for
Weight Calibration
(1P~5P)
Zero Point Voltage
Calibration
Span Voltage
Calibration
correct
General Calibration

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Entering the MODBUS
calibration, see 3.3 for
details
Calibration process
Before the Linearity Calibration, the General Calibration should be completed.
Calibration Switch set to ON
MODBUS
Calibration
Entering the Digital
calibration, see 3.7 for
details
Entering the linearity
calibration, see 3.6 for
details
Entering the General
calibration, see 3.5 for
details
Entering the specification
calibration, see 3.4 for
details
General Calibration
Linearity Calibration
Digital calibration
Spec. Calibration

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3-3 MODBUS Calibration
RS1-02 set as “4” (MODBUS RTU mode)
RS1-07 set as “01” (scale’s address)
a. CAL Switch set to ON and set 00 CCP = CCP, or
b. CAL Switch set to OFF
Eg:
Zero calibration
Input 01050423FF007CC0 ← zero calibration
Reading calibration status
1. Command: Input 010100410005AC1D
First 01 is scale’s address. Second 01 is command. 00 41 (decimal number 65)
is MODBUS address. 00 05 means continuously inquire 5 addresses, i.e. 65,
66, 67, 68, 69.
2. Scale’s reply: 01010105919B
First 01 is scale’s address. Second 01 is command. Third 01 means reply with
1 byte, i.e. the subsequent 05 is binary 0000 0101 –if first bit is 1, that means
Address 65 (decimal) is set to 1 performing zero calibration, and so on. If
second bit is zero, then span calibration has no action. Please refer to
“Appendix 3: MODBUS Data Address Table”. After zero calibration has finished
without Err message, zero calibration is completed.
Span calibration
Input weight calibration value 3000
Input 0110044C0001020BB8EADE ← Input weight calibration value 3000
Put 3kg on the platter
Span calibration
Input 01050424FF00CD01 ← Span calibration
Reading calibration status
1. Command: Input 0101004200015DDE
2. Scale’s reply: 010101019048
First 01 is scale’s address. Second 01 is command. Third 01 is scale’s reply
byte count. Fourth 01 is binary 0000 0001, which means address –if first bit
Press key
Keep flashing

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is 1, that means Address 66 (decimal) is set to 1, i.e performing span
calibration. Please refer to “Appendix 3: MODBUS Data Address Table”. After
zero calibration has finished without Err message, zero calibration is completed.
9048 is CRC error detecting code.
3-4 Specification calibration
Press key
Key in calibration
code
Press key
Display shows the
previous parameter
code. Input the new
code as required
Press key
To continue the next function setting
or press key to escape
Increment flashing digit
Decrement flashing digit
Move flashing point left
Move flashing point right
Store data in memory
Exit / Escape
*Calibration parameter code
Unit
Decimal Point
Min. Division
Max. Capacity
Zero Range
Time of Zero tracking
Range of Zero tracking
Investigate period of unstable
Investigate range of unstable
Function Zero and Tare when
the weight is unstable
Tare function availability when
gross weight is negative

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Item
Function
Setting value
Default
Parameter
Description
CSP-01
Unit
0
None
2
1
g
2
Kg
3
t
4
lb
CSP-02
Decimal
Point
0
None
0
1
1 Decimal Point
2
2 Decimal Point
3
3 Decimal Point
CSP-03
Division
1
Division size
1
2
5
10
20
50
CSP-04
Max.
Capacity
999999

000000
Max. capacity
999999
CSP-05
Zero range
0 =full range
(1%~30%)
Zero range = calibration zero point (Max.
capacitysetting value %)
0
CSP-06
Time of
zero
tracking
0.0 ~ 5.0
(sec)
Time and range of zero tracking should be
use at the same time. If the time is set to 0.0,
the zero tracking function is disabled
1.0
CSP-07
Range of
zero
tracking
0 ~ 9
Range of zero tracking = (setting value½)D ,
D=min. division
Range and time of zero tracking should be
use at the same time. If the range is set to 0,
the zero tracking function is disabled
2
CSP-08
Investigate
time in stable
0.0 ~ 5.0
(sec)
Investigate time and range should be use at
the same time. If the time is set to 0.0, the
investigate time is disabled
1.0
CSP-09
Investigate
range in stable
0 ~ 9
Investigate time and range should be use at
the same time. If the range is set to 0, the
investigate range is disabled
2
CSP-10
Weight
unstable,
function ZERO
and TARE
0
Action
0
1
None
CSP-11
Gross Weight
is negative,
function TARE
0
Action
0
1
None