CAS WEIGHING SOLUTION NT-200 Series User manual

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TableofContents
0. Precaution............................................................................ 4
1. Introduction......................................................................... 5
2. Features & Main Function............................................... 6
3. Specification ........................................................................ 7
4. Dimensions .......................................................................... 8
5. Front Panel.......................................................................... 9
6. Rear Panel .........................................................................12
7. Installation.........................................................................13
8. Test Mode........................................................................... 14
9. System Mode.....................................................................17
10. Calibration Mode...........................................................22
11. Function Mode................................................................31
12. How to use .......................................................................43
13. Communication..............................................................47
14.CAS & Command Mode Protocol..............................49
15. ErrorMessage & Trouble Shooting...........................53

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0. Precaution
Observe the following safety precautions:
Do not disassemble the indicator.
Indicator must be grounded to minimize electricity static.
This will minimize defect or electric shock.
Do not pull the plug by its cord when unplugging. Damaged cord could cause
electric shock or fire.
Do not place or use the indicatornear flammable or corrosive gas.
To reduce electric shock or incorrect reading, do not spill water on the scale or
place it in humid condition.
Avoid placing the indicator near heater or direct sunlight.
Insert plug firmly to wall outlet to prevent electric shock.
For consistent and accurate reading, maintain periodical check by your CAS
authorized dealer.
Avoid sudden shock to the indicator. Internal mechanism could be damaged.
Place the indicator on firm and temperature consistent environment.
Keep the indicator away from other electromagnetic generating devices.
This may interfere with accurate reading.
Our Dealers: CAS feels that each of its valued customers should get the best service
available. Whether it’s the initial installation of our product, maintenance/
repair work, or simply answering questions about our products, CAS Corporation and
all of it’sAuthorized Dealers are highly trained to assist you with any need regarding
CAS products.

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1. Introduction
Congratulations on you’re purchasing the NT-200 Series weighing indicator.
These goods are the product of years of research, during the manufacturing
process of this indicator to endure that it is a reliable instrument that perform accurately.
Each indicator is subjected to several levels of quality control before it leaves the factory.
CAS indicator is shaped firmly and delicately designed to coincide with the special
requirements of several industrial fields and includes many functions and various external
interfaces.Also, it is programmed on the basic of the user's convenience and contains help
display functions to be used easily.
Before using NT-200 Series, It is recommended to read this manual carefully and to apply
the function application fully.

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2. Features & Main Function
Features
( Appropriate for Weight and Measurement System
( Easy Operation
( Full Digital Calibration
( Weight Back-Up [ Weight Memory at Sudden Power Failure ]
( 4 Multi-Point Calibration
( Command Mode Function (Control by PC – Request and Set the Data)
( Kg/lb Conversion & kg/lb Calibration
( Lock Function of Front Key
( User Message Print Function
( Output the signal of Hi & Low limit, Zero, OK with serial comm.
( Count, Limit, Accumulation and Percent Function
( Set Point ( 20 of tare ), (Hi-limit, Low-limit, Count unit each )
( Preset Tare
( Gravity Compensation
Main Function
( ( Various Printer Connection [ Roll DEP & Label DLP Printer Support ]
( ( Users can Set the Desirous Max. weight and a Division Freely
( ( Independent Zero Calibration
( ( Self Hard Ware Test
* State Mark
- Only LED Version [ NT-200A / NT-200S ]
- Only LCD Version [ NT-201A / NT-201S ]
Nothing – Common Function

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3. Specification
Load Cell & A/D Conversion
Load Cell Excitation Voltage DC 5V (Connectable up to 6 EA)
Zero Adjustment Range 0.05 mV ~ 5 mV
Input Sensitivity 2 Uv / D (OIML, Ntep, KS)
0.5 uV / D (Non OIML, Ntep, KS)
Non-linearity 0.01% Full Scale
A/D Internal Resolution 1 / 200,000
A/D External Resolution 1 / 5,000 (NTEP, OIML, KS)
1 / 20,000 (Non NTEP, OIML, KS)
(It is recommended using full capacity of 2mV/V L/C )
A/D internal resolution
60 times/sec
Calibration Full Digital Calibration : SPACTM
(Single pass automatic span calibration)
*It is possible to set communication speed and a use of RS 232, RS422.
Digital Part
NT-200A, NT-200S LED (6 digit)
Display NT-201A, NT-201S LCD (6 digit + Sign)
NT-200A, NT-200S 25 mm (Height)
Character Size NT-201A, NT-201S 24 mm (height)
Display below zero "-" minus sign
Lamp ZERO, TARE, GROSS, NET, STABLE, HOLD,
UNIT(kg, lb)
AC Adapter AC 230 V (DC 9V, 600mA)
Operating Temperature -10℃~ 40℃
Product Size 96mm(H) x 200mm(L) x 52mm(W)
Product Weight Approx. 0.5Kg
Communication Part
Standard COM1 (RS-232 Printer & PC Interface )
RTC (Real Time Clock)
Option COM2 (RS-422 Multi Drop Interface)
* You can use COM2 for connecting printer (RS-232)

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4. Dimension
NT-200A, NT-201A
NT-200S, NT-201S

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5. Front Panel
NT-201A
Display Lamp
STABLE Measured Weight is stable
NET On : Net OFF : Gross
ZERO Current Weight is 0 kg
HOLD Hold function is activated
◁TARE Tare is activated
ACCUMULATION This state is in accumulation mode
COUNT MODE It is in count mode & displayed the unit of count
PERCENT MODE It is in percent mode & displayed the unit of percent

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NT-200A
Display Lamp
STABLE Measured Weight is stable
ZERO Current Weight is 0 kg
TARE Used to weigh an item by using the container
NET Toggles the display between gross & net weight
HOLD Hold Function is activated
Key Board
Used to enter setting value in TEST, CAL, and SET mode instead of Numeric keys
▲Increase setting value of first digit by one
▼decrease setting value of first digit by one
◀Moves one digit to left
ZERO Reset the Current Value

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ZERO KEY
Used to remove small variations in the indicator’s zero
If pressed for 2~3 sec, you can go to SYSTEM Mode
TARE KEY
Used to weigh an item by using the container
Current weight is memorized as tare weight
If pressed in unload condition, tare setting is released
If pressed for 2~3 sec, you can go to KeyTare Mode
When you know the tare weight, you can enter the tare weight
GROSS / NET KEY
It means NET lamp is on for Net & off for Gross weight
If pressed for 2~3sec, you can see “On” and input Product ID
If pressed for 2~3 sec, you can “CodE=Z lim=t”. Then you can Input
Product ID with ZERO, Limit value with TARE key.
PRINT KEY
If you print, current weight is added to total weight
If pressed for 2~3 sec, you can see "SUB = Z GrAn = T".
You can print out the sub total weight with ZERO key and
total sum weight with TARE key
After the sub total weight and grand total weight is printed out, it is set
to zero(0)
ENTER KEY - Used as HOLD key
If pressed for 2~3 sec, you can see “dEvi = Z Set = t”.
You can go to DEVIDE with ZERO, SET Mode with TARE key
UNIT KEY
You can change the unit of weight ( kg/lb ) (USA Version)
All functions are used with the unit of weight is selected
in weight calibration in CAL MODE.
If you press UNIT key for 2~3 sec, power is turned on or off

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6. Rear Panel
NT-200A, NT-201A
NT-200S, NT-201S
xCAL S/W Calibration Switch Bolt
xPOWER Port for Power
xLOAD CELL Port for connecting Load Cell
xRS-232C Serial Interface COM1, COM2 Port
[connect to PC, Printer]
xF/G Ground Terminal [ Frame Ground ]
If it is not connected, it may cause trouble

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7. lnstallation
Load Cell Connection
Connect load cell connector to load cell port which is in the backside of indicator.
Note: Wire color can be different depending on the manufacturer or Load cell’s model
PIN COLOR PIN COLOR
1 (EXC+) RED 5(SHIELD) SHIELD
2 (EXC-) WHITE 6 (SEN+) BROWN
3 (SIG+) GREEN 7 (SEN-) BLACK
4 (SIG-) BLUE

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8. Test Mode
( How to Go to Test Mode
To go to Test mode, press the [TARE]+[UNIT] key in starting mode until being displayed
the message of “tESt” .
In Test mode, Back-light is On.
( Test Menu(TEST1 – TEST6)
Test 1 : Key test
Test 2 : A/D conversion test
Test 3 : Serial interface(Com1) test (RS-232)
Test 4 : Serial interface(Com2) test (RS-422/485: Option)
Test 5 : Printer test
TEST 1
KEY TEST
KEY FUNCTION DISPLAY DESCRIPTION
UNIT Go to TEST2 tESt 1 TEST 1 Condition
Press any key to test then the
OTHERS Testing
Key Codes 1 Code of that key is shown below
KEY
ZERO TARE GROSS/NET PRINT * UNIT
CODE 0 1 2 4 8 Go to TEST2

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TEST 2
A/D Conversion TEST (Load Cell Test)
KEY FUNCTION DISPLAY DESCRIPTION
UNIT Go to TEST3 tESt 2 TEST 2 Condition
TEST 2 is performed automatically
24750 This value can be changed
Note 1. Check the numeric by loading and unloading a weight.
If the numeric is not changed or it is o, check the connection of the load cell.
TEST 3
RS - 232 TEST with Computer (RS - 232C)
KEY FUNCTION DISPLAY DESCRIPTION
ZERO Transmit ‘0
TARE Transmit ‘1
NET/GRS Transmit ‘2
tESt 3 TEST 3 Condition
PRINT Transmit ‘4 ----- Waiting for Transmission & reception
ENTER Transmit ‘8’ 0 ----- 1 Receive : 1 Transmit : 0
UNIT Go to TEST4 2 ----- 1 Receive : 1 Transmit : 2
Note 1. Before testing, connect RS-232C of PC to COM1 port of Indicator.
Note 2. If you send ASCII code 0 ~ 9 in PC keyboard, Indicator receives this data.
If you press “1(ZERO key)” of indicator, you can check it in PC.
* INDICATOR TEST (If PC is not connected)
1. Connect No.2(TxD) and No.3(RxD) of Indicator Serial Port.
2. Press any key of the indicator and check the received data whether it is same or not.

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TEST 4
RS - 422/485 TEST with Computer (RS - 422/485 : Option)
KEY FUNCTION DISPLAY DESCRIPTION
ZERO Transmit ‘0’
TARE Transmit ‘1’
NET/GRS Transmit ‘2’
tESt 4 TEST 4 Condition
PRINT Transmit ‘4’ ----- Waiting for Transmission & reception
ENTER Transmit ‘8’ 0 ----- 1 Receive : 1 Transmit : 0
UNIT Go to TEST5 2 ----- 1 Receive : 1 Transmit : 2
Note 1. Before testing, connect RS-422/485 of PC to COM2 port of Indicator and
run the communication program of PC.
Note 2. Before testing, connect COM2 port of Indicator.
Note 3. If you send ASCII code 0 ~ 9, Indicator receives this data.
If you press “1(ZERO key)” of indicator, you can check it in connected device.
TEST 5
PRINTER TEST
KEY FUNCTION DISPLAY DESCRIPTION
UNIT Go to Normal Mode
ENTER Testing the Printer tESt 5 TEST 5 Condition
Note 1. You should set the use of printer and printer in Device mode.
Note 2. If printer connection and setting is done successfully, the display shows “good”
and if not, the displays shows error message.
Note 3. Test Output Form of Printer is as follows.
And see " TEST OK " in the Hyper Terminal also.
TEST OK

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9. System Mode
How to Go to System Mode
If you press the [ZERO] key for 2~3 seconds in weighing mode.
you can see the “SyS” on the display after showing “on”. And then
you can move to any mode where you want to go using the G/N key.
SYSTEM MODE
MODE [G/N] key DISPLAY [ENTER] key ACTION
Weight MODE ( )Ⅰ↓WEiGht END Weighing Mode
Count MODE ( )Ⅱ↓CoUnt END Count Mode
Percent MODE ( )Ⅲ↓PEr END Percent Mode
Accumulation
MODE ( )Ⅳ↓
Circulation
Key
ACC END
Accumulation
Mode
ENTER WEiGht END Weighing Mode
WEIGHT MODE( )Ⅰ
INITIAL DISPLAY DESCRIPTION
Weighing Mode

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COUNT MODE( )Ⅱ
INITIAL DISPLAY DESCRIPTION
Counting Mode
( ) Press the [TARE] key long to set the Count Mode in detailⅡ
DISPLAY KEY DESCRIPTION
ZERO Input the weight of unit with sample,
and go to count weighing mode
on
SAMP = Z
In=t
TARE Input the weight of unit with key value,
and go to count weighing mode
End ENTER Go to the count weighing mode
(Ⅱ- 1) In the case of pressing the [ZERO] key
DISPLAY KEY DESCRIPTION
SAMPLE Sample weight input state.
UnLoAd Unload display
A/D (24750) ENTER Display unload value
LoAd
A/D (24750) ENTER After put a sample weight on the platform,
press [ENTER] key
Good /nUMbEr
10 pcs
After checking the message “Good” “nUMbEr”
10 Input the number what you want
(Ex) 10kg(sample) 10 , weight of unit is 1kg
Good ENTER After saving, go to initial display of count mode
ENTER It is displayed and then go to counter mode
(Ⅱ- 2) In the case of pressing the [TARE] key
DISPLAY KEY DESCRIPTION
Input the weight of sample with key
For example, set the 0.5kg to count ‘1’
WEiGht
0.500 kg
ENTER After saving, go to initial display of count mode
If the weight of sample is over the maximum
Err 08 Err 32
Capacity(Err08) or small(Err32), return
ENTER It is displayed and then go to counter mode

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PERCENT MODE(Ⅲ)
INITIAL DISPLAY DESCRIPTION
Percent Mode
(Ⅲ) Press the [TARE] key long to set the Percent Mode in detail
DISPLAY KEY DESCRIPTION
ZERO After weighing the weight of 100%,
go to the percent weighing mode
on
SAMP = Z
In=t
TARE After weighing the weight of 100% with key,
go to the percent weighing mode
End ENTER Go to the percent weighing mode
(Ⅲ- 1) In the case of pressing the [ZERO] key
DISPLAY KEY DESCRIPTION
SAMPLE Sample weight input state
UnLoAd Unload display
A/D (24750) ENTER Display unload value
LoAd
A/D (24750) ENTER After put a sample weight on the platform,
press [ENTER] key
Good / Per
10 %
After checking the message “Good” “Per”
10 Input the number what you want
(Ex) 10kg(sample) 10 , the weight of 1% is 1kg
Good ENTER After save, go to initial display of percent mode
ENTER It is displayed and then go to percent mode
(Ⅲ- 2) In the case of pressing the [TARE] key
DISPLAY KEY DESCRIPTION
Input the weight of sample with key.
Set the 20.00kg to 100%
WEiGht
20.00 kg
ENTER After saving, go to initial display of percent mode
If the weight of sample is over the maximum
Err 08
Capacity(Err08) or small(Err32), return
ENTER It is displayed and then go to percent mode

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■The use of key in the Counter & Percent Weighing Mode
KEY DESCRIPTION
Short The current value of counter or
percent set to zero
ZERO
Long Move to System mode
Short Save the value of tare
TARE
Long Enter the count or percent mode to set value
Short Display the weight of Gross or Net in turn
GROSS/NET
Long Move to Code mode (Product ID)
Short Print the current value
PRINT
Long Print the total value
Short Display the current weight for 3 seconds and
Return to the counter or percent mode
ENTER
Long Move to the Function mode
Short
Display the weight of 10-pcs(count) or the weight
of 100 % for 3 seconds and return to the
counter or percent mode
UNIT
Long Power off
Ref. User can set by 2.5times of external resolution in count and percent mode(unit:0.1%).

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ACCUMULATION MODE(Ⅳ)
INITIAL DISPLAY DESCRIPTION
Accumulation Mode
■The use of key in the Accumulation Mode
KEY DESCRIPTION
Short The current value sets to zero
ZERO
Long Move to System mode
Short Save the value of tare
TARE
Long Refer to the 12 - 4.
HOW to INPUT the VALUE OF TARE with ID
Short Display the weight of Gross or Net in turn
GROSS/NET
Long Move to Code mode (Product ID)
Short Add the current weight
Print the sub total or sum total weight
(After printing, the total weight is clear)
PRINT Long
If not connected with the printer, display
err 12 and then clear the total of sub & sum
In the case of pressing the [PRINT] key long
DISPLAY KEY DESCRIPTION
SUB = Z ZERO After printing the sub total weight, it is clear
GrAn = t TARE After printing the sum total weight, it is clear
Short
Times of Adding and Total weight are
displayed for 5 seconds ( C = 003, 20.5kg)
If you press [ZERO] key, All data is cleared
ENTER
Long Go to the Function mode
UNIT Long Power Off