CAS NT-580A User manual

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1. Introduction
We greatly appreciate for your purchase of the CAS industrial indicator.
These goods have hold excellent performance and splendid properties
through strike Tests as well as devoting ourselves under severe quality
management.
CAS indicator (NT-series) is shaped firmly and delicately designed
a 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-580A, It is recommended to read this manual carefully
and to apply the function application fully.

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Precautions
Observe the following safety precautions :
Warning
When any damage or defect
occurs, contact your CAS
authorized dealer immediately
for proper repair.
Insert plug firmly to wall outlet to
prevent electric shock.
Scale 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.
To prevent from fire occurring,
Do not place or use the scale
near 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 scale near
heather or in direct sunlight.

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Attention
For consistent and accurate
reading, maintain periodical
check by your CAS authorized
dealer.
Avoid sudden shock to the scale.
Internal mechanism could by
damaged.
Attach the rubber pad to the
bottom of the indicator.
Elimination is possible.
Place the scale on firm and
temperature consistent
environment.
Keep the scale away from other electromagnetic generation 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 its Authorized Dealers are highly trained to assist
you with any need regarding CAS products.

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Table of Contents
1. Features .............................................................................10
1-1. Features...................................................................................................... 10
1-2. Main function ............................................................................................ 10
1-3. Analog Part & A/D Conversion ............................................................... 11
1-4. Digital Part................................................................................................. 11
1-5. General Specification................................................................................ 12
1-6. Option Specification ................................................................................. 12
2. Measure of Appearance ..................................................13
2-1. Measure of Appearance ............................................................................ 13
2-2. Front Panel................................................................................................. 14
2-3. Rear Panel.................................................................................................. 18
3. Installation & Connection ..............................................19
3-1. Loadcell connection.................................................................................. 19
4. Calibration Mode.............................................................20
4-1. How to enter Calibration Mode ............................................................... 20
4-2. Available key in the Calibration Mode .................................................... 20
4-3. Calibration Menu ...................................................................................... 20
- Maximum Value Set.................................................................................................. 21
- Setting Minimum division and Dot position .......................................................... 21
- Setting Multi Calibration Range .............................................................................. 22
- Zero Calibration ......................................................................................................... 22
- Setting Weight value.................................................................................................. 23
- Weight Calibration ..................................................................................................... 23
- Zero Adjust ................................................................................................................. 24
- Weight Constant Calibration .................................................................................... 24
4-4. Sealing Method ......................................................................................... 25

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5. Set Mode ........................................................................... 26
5-1. How to enter Set Mode.............................................................................26
5-2. Available key in Calibration Mode ..........................................................26
5-3. Menu of Set Menu(F01 ~ F99) ................................................................27
5-3-1. General function ............................................................................................30
5-3-2. Serial interface ...............................................................................................33
5-3-3. Print function .................................................................................................37
5-3-4. Batching Operation Function.......................................................................41
5-3-5. Option Function.............................................................................................43
5-3-6. Input set point ..............................................................................................44
5-3-7. Initialize set Mode Value ..............................................................................44
6. Test Mode ......................................................................... 45
6-1. Method of enter the Test Mode ................................................................45
6-2. Explain key in the Test Mode...................................................................45
6-3. Test Menu ..................................................................................................46
- Key Test .......................................................................................................................46
- Display Test.................................................................................................................46
- A/D Test .......................................................................................................................47
- RS232(Serial) Test .....................................................................................................47
- Print Test ......................................................................................................................48
- External In/Out Test ...................................................................................................48
- BCD out(Option) Test................................................................................................49
- Analog out (Option) Test ...........................................................................................49
- BCD In(Option) Test .................................................................................................50
- RTC Test......................................................................................................................50

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7. Weighing Mode ................................................................51
7-1. Method of enter the Weighing Mode....................................................... 51
7-2. Explain key in the Weighing Mode ......................................................... 51
7-3. External In/Out control Interface ............................................................. 53
7-4. Item Code .................................................................................................. 55
7-5. Set Point Input ........................................................................................... 56
7-6. Regulation of Input Set Point ................................................................... 57
7-7. Batching Operation ................................................................................... 58
User Program Control Mode .................................................................................. 58
- Normal Batching ........................................................................................ 60
- Loss-in- Weight Batching.......................................................................... 62
Automatic Program Control Mode ........................................................................ 58
- Normal Batching ........................................................................................ 64
- Loss-in- Weight Batching.......................................................................... 66
8. Serial Communication ....................................................68
8-1. RS-232C Connection................................................................................ 68
8-2. Serial communication device connection................................................ 69
8-2-1. Sub display connection ................................................................................69
8-2-2. CAS TOP printer connection .................................................................... 69
8-2-3. CP-7000 Series printer connection............................................................. 69
8-3. RS-232C PROTOCOL............................................................................. 70
8-3-1. 22 Bytes of CAS ........................................................................................... 70
8-3-2. 10 Bytes of CAS ........................................................................................... 71
8-3-3. 18 Bytes of AND ..........................................................................................71
8-4. Simple Interface Program......................................................................... 72

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9.OPTION ............................................................................ 73
9-1. Current Loop Serial Out ...........................................................................73
9-2. RS-485 Serial Interface.............................................................................74
9-3. BCD Out Interface ....................................................................................75
9-4. Analog Out Interface(4~20mA)...............................................................77
9-5. Analog Out Interface(0~10V) ..................................................................80
9-6. BCD IN Interface ......................................................................................82
10. Error Message ............................................................... 84
10-1. Error Message in the Calibration Mode ................................................84
10-2. Error Message in the Weighing Mode...................................................85

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1. Features
1-1. Features
■High speed, High accuracy
■High speed micro processor adoption
■A/D conversion speed : Maximum 200 times/sed
■Appropriate for weight and measurement system
■Easy operation and various options.
■Simple and prompt Full Digital Calibration
(SPACTM: Single pass automatic span Calibration)
■RFI./EMI screened
■Watch Dog circuitry (System restoration)
■Weight Back-up
(Weight memory at sudden power failure)
1-2. Main Functions
■Store date, time and calculated data at sudden power failure.
■Various specification on weight conversion speed.
(Digital filter function)
■Various printer connection. (RS-232C Serial printer)
■Tare weight setting with keys.
■Storage of measured times.
■Set Point input & highest, lowest limit input.
■External input 6 relay.
■External output 8 relay.
■Users can set the desirous max. weight and a division freely.
■Control various external equipment by inner external input/output.
■Print date and time by inner clock.
■Self hardware Test.
■Prompt A/S is available for Test of each part of circuit by module is possible.

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1-3. Analog Part & A/D Conversion
Load Cell Excitation Voltage DC 10V, 8 x 350Ωload cells
Zero Adjustment Range 0.05mV 20mV∼
Input Sensitivity 1.2μV/D (H-44,OIML)
0.6μV/D (Non H-44,OIML)
System Linearity Within 0.01％of F.S.
A/D Internal Resolution 1 / 200,000
A/D External Resolution 1/5,000 (H-44,OIML)
1/20,000 (Non H-44, OIML)
A/D Conversion Speed Maximum 200 times/sec
1-4. Digital Part
Span Calibration Full Digital Calibration : SPAC™
(Single automatic span Calibration)
Display VFD 7Digit
Size of letter 13 mm (Height)
Division ×1, ×2, ×5, ×10, ×20, ×50
Tare Subtraction Full capacity
Display Below Zero “-”Minus

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1-5. General Specification
Power AC 85~264V, 50~60 Hz
Product Size 192(W) x 199(D) x 96 (H)
Temperature Range -10 ~ 40℃℃
Fuse Capacity T2A L250V
Product Weight Approx. 1.8 kg
1-6. Option Specification
Option - 1 Serial Interface : Current Loop
Option - 2 Serial Interface : RS-485
Option - 3 BCD OUT
Option - 4 Analog OUT ( Iout : 4 - 20mA)
Option - 5 Analog OUT ( Vout : 0 - 10V)
Option – 6 BCD IN(Input of Set Point )

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2. Measure of Appearance
2-1. Measure of Appearance

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2-2. Front Pannel
(1) Main Display (weight)
A. Weightvaluedisplay
- Displays the Gross weight or the Net weight
-Whenerroroccurred,the display shows error and weight value alternately.
B. Overscaleanderrordisplay
-Over-scale,sequenceerrorsandCalibrationerrorsaredisplayed
Plea※se refer to “ Error Message “ on P.94
C. Settingvaluedisplay
-Variousfinaldischargesetting values and setting values for adjustment are displayed.
(2) Status Display
"Zero"Lamp ▼Current weight is 0 kg
"ST"Lamp ▼Weight is stable.
"Gross"Lamp ▼Current weight is Gross weight
"Net"Lamp ▼Current weight is Net weight
"Tare"Lamp ▼Tare is stored
"Hold"Lamp ▼Lamp is on when moving object is weighed.
"*" Lamp ▼
Lamp is on when “*” key is used.
( Designate in the Set Mode F42)
automatic Print is set

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(3) Keyboard
□▲, ▼, ◀, ▶Key : Available keys instead of numeric keys
▣▲, ▼: Change the set value.
▲key increases the set value and ▼key decreases the set value.
▣◀, ▶: Change the digit of the set value.
▶key moves one digit to right, ◀key moves one digit to left.
▣USAGE 1: Input the tare weight.
▣USAGE 2: Input the Set Point value.
▣USAGE 3: Input the numeral value in the Test, CAL, SET Mode.
□ZERO Key : Return the display to 0.
□TARE Key (Automatic tare weight input)
▣Use a container in weighing.
Current weight is memorized as the tare weight.
▣If you press the TARE key in the unload condition, the tare setting is released.
□KEY TARE Key (Manual tare weight input)
When you already know the tare weight, press the KEY TARE key and
input the tare weight with arrow keys and memorize it by pressing the ENTER key.

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□G/N Key (Gross/Net key)
▣Display the gross and net weight by turn.
G. weight lamp on - gross weight.
N. weight lamp on - net weight.
▣In case the tare weight is registered, the total weight of tare and item is the G. weight
and only the weight of item is N. weight.
▣To use or To prohibit the Front keys.
(The program is converted by pressing G/N key more than 4 sec.)
□“ * ” Key
▣“*” key is used in various ways.
▣Set the Set Point value for the batching operation.
(The program is converted by pressing * key for more than 2 sec.)
▣It is used as the function designated in the SET Mode F17.
0. Do not use.
1.PRINTKey.
2. HOLD Key.
□ENTER Key
▣ENTER key is used in various ways.
▣Set the Set Point "CODE" for the batching operation.(00~49)
(The program is converted by pressing the ENTER key for more than 2 sec.)
▣It is used as the function designated in the SET Mode F18.
0. Do not use.
1. Total print key.
2. Start key for the batching operation.
3. Stop key for the batching operation.
▣In the CALIBRATION, Test, SET Mode : Store current a condition and exit.

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(4) Front slide S/W usage
If you open the front cover of the indicator, you will see the Dip switch.
You can enter the related Mode to the state of the SW.
□DIP Switch : Mode Table
□Test Mode
▣If you turn off all of the DIP swtiches(0,0), you can move into the Test Mode then.
▣If you turn on all of the DIP swtiches(1.1) after the Test, you can return to the Weighing Mode
then.
□Calibration Mode
▣If you turn on only the DIP switch 1 (0, 1), you can move into the Calibration Mode then.
▣If you turn on all of the DIP switches (1,1) after the Calibration, you can return to the
Weighing Mode then..
□Set Mode
▣If you turn on only the DIP switch 2(1, 0), you can move into the Set Mode then.
▣If you turn on all of the DIP switches(1,1) after the Calibration, you can return to the
Weighing Mode then.
DIP S/W Mode
0 0
Test Mode (TEST)
0 1
Calibration Mode (CAL)
1 0
Set Mode(SET)
1 1
Weighing Mode (WEIGHING)

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2-3. Rear Pannel
□LOAD CELL : Port for connection. 4Wires, 6Wires Loadcell
□COM 1 : Serial Interface Com Port (Option - RS485)
□COM 2 : Serial Interface Com Port
□Control I/O
External Input : Zero, Tare, Start, Stop , *, Enter key.
External Output : External Output for Batching operation.
□OPTION : When Option in Use, please connect.
□AC INPUT : AC 100 ~ 240V(50/60Hz) ara available.
FUSE - T2A L250V

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3. Installation & Connection
3-1. Loadcell Connection
Connect the load cell connector to the load cell port which is in the backside of the
indicator.
* Connection method
Note . In case of the 4 wires load cell, connect EX+ with SEN+, and connect EX- with SEN-.
Note . Fix a loadcell wire as above picture by using cable tie.
PIN 6 Wires 4 Wires
1(Red) EXC+
5 (Brown) SEN+
EXC+
(Connect to
1,5 pin)
2 (White) EXC-
6 (Black) SEN-
EXC+
(Connect to
1,5 pin)
3 (Green) SIG+ SIG+
4 (Blue) SIG- SIG-
7 (Black) SHIELD SHIELD

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4. Calibration Mode
4-1. How to enter Calibration Mode
If you open the front cover of the indicator and turn on the DIP S/W2, the Calibration Mode is
started.
At this time, CAL message is displayed on VFD and CAL 1 runs automatically.
If you turn on all of the DIP switches(1,1) after the Calibration, you can return to the Weighing
Mode then.
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4-2. Available Keys in Calibration Mode
▲, ▼Key : Change the set value
▲Key : increase set value
▼Key : decrease set value
, Key : Change the digit of set value▶◀
Key : moves one digit to right▶
Key : moves one digit to left◀
”* ” Key : Cancel of input value
ENTER Key : The program is moved into the next menu after saving the set value.
4-3. Calibration Menu(CAL1 ~ CAL9)
CAL 1 : Maximum Value Set
CAL 2 : Minimum Division & Dot Position Set
CAL 3 : Weight Calibration
3-1. Set Range of Multi Calibration
3-2. Zero Calibration
3-3. Set Weight
3-4. Span Calibration
CAL 8 : Zero Adjust
CAL 9 : Weight Constant Calibration

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CAL 1 (CAL 1 Start automatically)
Function : Maximum Capacity(range: 1 ~ 99,999)
KEY VFD SCREEN DESCRIPTION
C = 10 Maximum capacity is 10
C = 100 Maximum capacity is 100
C = 1000 Maximum capacity is 1000
▲,▼: increase or
decrease of no.
, : Shift of digit▶◀
”* " : Cancel and
move to CAL-1
Enter : Store and move
Into next menu C = 10000 Maximum capacity is 10000
Ref 1. The maximum value means the maximum weight that a scale can measure.
CAL 2
Function : Setting Minimum division and Dot position
Setting value range : 0.001 ~ 50
USED KEY VFD SCREEN DESCRIPTION
div = 0.001 Minimum division : 0.001 kg
div = 0.01 Minimum division : 0.01kg
div = 0.1 Minimum division : 0.1 kg
▲,▼: increase or decrease of
no.
▶,◀: Shift of digit
”* " : Cancel and
move to CAL-1
Enter : Store and move
intonextmenu div = 1 Minimum division : 1kg
Ref 1. Minimum division means mininum change(one division value) of unit of weighing change.
Ref 2. External resolution is the value dividing maximum weight into minimum devision, and its setting range
should be less than 1/10,000.
Ref 3. Dot position is decided by dot position of minimum devision set in CAL2 mode.