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6. InterFace

1. Serial Interface

RS-232C Serial Interface is sensitive/weak for electric Noise.

So, please isolate with AC power cable and use shield cable to reduce the electric noise effect.

1-1. Signal Format

①

. Type : EIA-RS-232C

②

. Communication Method : Half-Duplex, Full Duplex, Asynchronous

③

. Serial Baud Rate : Selectable on

“F-function31”

④

. Data Bit : 8(No Parity mode, only)Bit

–

Refer “F30”

⑤

. Stop Bit : 1

⑥

. Parity Bit : Non, Even, Odd (Selectable on “F-function 30”) -

Refer “F30”

⑦

. Code : ASCII

STX 02H

ETX 03H

CR 0DH

LF 0AH

+9V

LSB

MSB

-9V

Start Bit

Data Bit

Parity

Bit

Stop

Bit

1.2. Standard Data

Format(1) : ID Number will not be transferred. (Refer “F-function 35”)

+/-

Including Decimal

point

Header

Data Byte ( 8 or 9 byte )

(F38 setting)

Unit

①

. Header 1. : OL : Over Load, Under Load

: Display weight “Steady”

US : Display “Un-Steady”

②

. Header 2. : NT : Net-Weight

GS : Net-Weight, under TARE

③

. Data Bit(Number) 2B(H) : “+” Plus

2D(H) : “-“ Minus

Содержание NT-302A

Страница 1: ......

Страница 2: ...1 44 CONTENTS 1 Before Installation 2 Page 2 Introduction 3 Page 3 Specification 4 Page 4 Installation 10 Page 5 Set Up 12 Page 6 Interface 31 Page 7 Error and Treatment 40 Page 8 Warantee 43 Page ...

Страница 3: ...ic Shock or Damage Please do not touch by hand Protective Ground Earth terminal Prohibition of Operation process 1 3 Copy Rights 1 All Right and Authority for this Manual is belonged to CAS co Ltd 2 Any kinds of copy or distribution without CAS co Ltd s permission will be prohibited 1 4 Inquiries If you have any kinds of inquiries for this model please contact with your local agent or Head Office ...

Страница 4: ...t install place where high voltage or heavy electric noise condition 4 When you connect with other devices please turn off the power of item 5 Avoid from water damage 6 For the improvement of function or performance we can change item specification without prior notice or permission 7 Item s performance will be up dated continuously base on previous version s performance 2 3 Features 1 All Modules...

Страница 5: ...esolution Internal 520 000 Count 19bit A D Sampling Rate Max 200times Sec Non Linearity 0 005 FS Display Resolution External 1 20 000 3 2 Digital Part Display Parts Specification Display Main Display 7Segments 7digits Red color LED Size 20 0 H 13 0 W mm Min Division 1 2 5 10 20 50 Max display value 999 950 Under Zero value Minus display Status lamp Steady Zero Tare SP1 SP2 SP3 SP4 RTxD Green color...

Страница 6: ...ing External Dimension 193mm W ｘ100mm H ｘ140mm L Net Weight kg About 1 5kg Gross Weight kg About 2 0kg 3 4 Option Card Option No 1 Analogue Output 0 10V Option No 2 Analogue Output 4 20mA Option No 3 Serial Interface RS422 RS485 Option No 4 BCD Input Option No 5 BCD Output Serial Interface RS 232C or Current Loop is Standard installed 3 5 Front Panel Display Key pad ...

Страница 7: ...communication settings 3 5 2 Key Pad Function Make Weight value as Zero Under F08 you can set the Zero key operation range as 2 5 10 20 or 100 of Max Capacity Under Tare key input Zero key will not be activate within operation range Make Weight value as Zero including Tare Weight Under F09 you can set the Tare key operation range as 10 20 50 or 100 of Max Capacity Whenever pressing Tare key you ca...

Страница 8: ...e Press key and enter new set value with keypad and press enter to save Set the SP3 value or Check the current value Press key and enter new set value with keypad and press enter to save Set the SP4 value or Check the current value Press key and enter new set value with keypad and press enter to save Manual Printer Key input print output Calibration mode Digit setting Whenever pressing 0 key digit...

Страница 9: ...ction Keys Combined Key functions key other keys Time set value check or Change Date set value check or Change Code value check or Change Serial No check or change Sub total Data Delete Grand total Data Delete ...

Страница 10: ...put Digital Input Signal terminal Refer to F function 11 Output Terminal RS 232C CURRENTLOOP Standard Installed GND TXD1 CL1 CL2 RXD GND TXD ISP Digital Lock Pin Insert Lock Pin Header to protect F function data and other settings from Electric Noise effect To change the setting please remove the Lock Pin Header Relay Output 6pcs Relay output terminal According to F21 XX setting relay will be outp...

Страница 11: ...10 44 4 INSTALLATION 4 1 External Dimension Cutting Size External Dimension unit mm Cutting Size ...

Страница 12: ...45 A Plural Load cells use EⅹBⅹD 0 45 AⅹN Example1 Number of Load cell 1pcs Load cell capacity 500kg Load cell Voltage 2mV V Digit 0 05kg Affirmation Voltage of Load cell 5 0V Max Capacity of Weighing System 300kg Then estimation result for this weighing system with formula 5000ⅹ2ⅹ0 05 1 0 45 The calculated value is larger than 0 45 so this system has no problem 500 Example2 Number of Load cell 4p...

Страница 13: ...of Max capacity of your weighing scale Step 1 Enter Calibration Mode Turn on the Power 3 KEY display Press 3 KEY key display Press ENTER key to start Calibration Mode Remarks Go to next step with save ENTER key Back to previous step CLEAR key Step 2 Digit Division setting display Press 0 KEY and stop the optimal Digit value Whenever pressing 0 KEY digit value will be changed like 01 02 05 10 20 50...

Страница 14: ...value calculation Input prepared Test weight value with No keys And press ENTER KEY Then display will show and then load prepared test weight unit on the scale After a few seconds to remove the vibration effect press ENTER KEY Then indicator will calculate Span value and move the next step Caution For the precise Span calibration please prepare Test weight unit at least 10 of Max capacity of Scale...

Страница 15: ...F function No press CLEAR KEY Whenever pressing CLEAR KEY Function No will be changed If you want to move certain function No directly press function No with keypad and press CLEAR KEY Step 3 Change the Set value Input new set value with keypad and press ENTER KEY to save new setting If you don t press ENTER KEY after changing the set value the new set value will not be saved Step 4 Exit from Func...

Страница 16: ...ng Setting range 0 0 9 9sec F23 Weighing Finish Relay ON Duration time setting Setting range 0 0 9 9sec F24 Weighing Judge Relay ON delay time setting Setting range 0 0 9 9sec F25 Weighing Judge Relay ON Duration time setting Setting range 0 0 9 9sec F30 Serial I F Parity Bit setting Port No 1 Setting range 0 2 F31 Serial I F Communication Speed setting Port No 1 Setting range 0 9 F32 Serial I F M...

Страница 17: ...1 F57 Print Language Selection Setting range 0 1 F58 Print Delay time selection Setting range 0 0 9 9 F59 Auto Print Setting Setting range 0 1 F60 BCD output Selection Setting range 0 1 F63 Average Display setting Setting range 0 0 9 9 F64 Steady LED Status Lamp Delay time setting Setting range 0 0 9 9 F65 Tension and Compression setting Setting range 0 1 F77 All function Initialize F80 Empty Rang...

Страница 18: ...ting F04 5 0 9 Due to external causes Temperature wind and dust there are small weight difference indicator will ignore the weight difference and display Zero For this compensation function indicator will estimate the weight difference is over the set range during fixed time period If there is large weight difference over set range within fixed time period the Zero is breaking and will find new ze...

Страница 19: ...vated within 50 of Max Capacity 3 Activated within 100 of Max Capacity Hold Mode selection F10 0 Peak Hold Measure Max weight value and hold on display 1 Sample Hold Hold current weight until Hold Reset 2 Average Hold Make average during 8sec and hold display External Input Selection F11 Set Value Input 1 Input 2 Input 3 Input 4 0 Zero Tare Reset Hold Reset Print 1 Run Stop Tare Reset Zero Print 2...

Страница 20: ...mit Mode Weighing mode 1 2 Packer Mode Weighing mode 2 3 Checker 1 Mode Weighing mode 3 4 Checker 2 Mode Weighing mode 4 Weighing Mode Selection Relay Output Out 1 Out 2 Out 3 Out 4 Out 5 Out 6 1 Limit SP1 SP2 SP3 SP4 Finish Empty 2 Packer SP1 SP2 SP3 SP4 Finish Empty 3 Checker 1 Empty SP1 SP1 SP2 SP2 SP3 SP3 SP4 SP4 Empty 4 Checker 2 Empty SP1 SP1 SP2 SP2 SP3 SP3 SP4 SP4 Empty ...

Страница 21: ...OFF after t2 time set or weight is under Empty Range 4 Output Relay Relay Contents Relay Contents SP 1 Current weight SP1 ON Current weight SP1 OFF SP4 Current weight SP4 ON Current weight SP4 OFF SP 2 Current weight SP2 ON Current weight SP2 OFF FINISH After t1 time On during t2 time SP3 Current weight SP3 ON Current weight SP3 OFF Near Zero Within EMPTY range ON Sp1 Sp2 Sp3 Sp4 t1 Weight Near Ze...

Страница 22: ...nction 23 4 Relay Output Relay Contents Relay Contents SP 1 RUN input ON Current weight SP1 OFF SP4 RUN input ON Current weight SP4 OFF SP 2 RUN input ON Current weight SP2 OFF FINISH After t1 time On during t2 time SP3 RUN input ON Current weight SP3 OFF NEAR ZERO Within EMPTY range ON Sp1 t1 Weight Near Zero TARE IN SP1 SP2 SP3 FINISH Near Zero Sp2 Sp3 Sp4 t2 SP4 RUN Output 6 Output 1 Output 2 O...

Страница 23: ... Output Relay Contents Relay Contents SP 1 Near Zero Steady weight SP1 ON SP4 SP3 Steady weight SP4 ON SP 2 SP1 Steady weight SP2 ON OVER SP4 Steady weight ON SP3 SP2 Steady weight SP3 ON NEAR ZERO Within EMPTY range ON Sp1 Weight Near Zero TARE IN Near Zero Sp2 Sp3 Sp4 Near Zero Steady weight SP1 SP1 Steady weight SP2 SP2 Steady weight SP3 SP3 Steady weight SP4 SP4 Steady weight t3 t4 t3 t4 t3 t4...

Страница 24: ... time 3 Relay Output Relay Contents Relay Contents SP 1 Near Zero Steady weight SP1 ON SP4 SP3 Steady weight SP4 ON SP 2 SP1 Steady weight SP2 ON OVER SP4 Steady weight ON SP3 SP2 Steady weight SP3 ON NEAR ZERO Within EMPTY range ON Weight Near Zero TARE IN Near Zero Near Zero Steady weight SP1 SP1 Steady weight SP2 SP2 Steady weight SP3 SP3 Steady weight SP4 SP4 Steady weight Sp1 Sp2 Sp3 Sp4 Outp...

Страница 25: ...N during 2 0sec STEADY Judging delay time t3 setting Only for F21 03 Check mode1 F24 10 00 99 After current weight is reached to each set point you can set some delay time of STEADY 00 setting At Steady point FINISH relay output 20 setting During 2 0sec hold Steady relay 99 setting During 9 9sec hold Steady relay STEADY Judging ON time t4 setting Only for F21 03 Check mode1 F25 10 00 99 After curr...

Страница 26: ...800bps 9 2 400bps Serial I F Mode setting Under F33 00 setting only Port No 1 Standard F32 0 Steam Mode Continuous Data transfer 1 Finish Mode Single time data transfer after Finish relay ON When Finish Relay output Data will be output 2 Print Mode Single time data transfer when print key input Serial I F Transference method setting Port No 1 Standard F33 0 Simplex Mode 1 Duplex Mode Command Mode ...

Страница 27: ... F37 0 About 40times sec 1 About 30times sec 2 About 20times sec 3 About 15times sec 4 About 10times sec 5 About 5times sec 6 About 3times sec Parity Bit selection Mode Port 2 Option F40 0 No Parity 1 Odd Parity 2 Even Parity Serial Communication Speed selection Port 2 Option F41 0 115 200bps 1 76 800bps 2 57 600bps 3 38 400bps 4 28 800bps 5 19 200bps 6 14 400bps 7 9 600bps 8 4 800bps 9 2 400bps ...

Страница 28: ...ommand Mode 2 LCD Mode Transferred Data Format Port 2 Option F45 0 Format 1 1 Format 2 Format 1 time 2 Format 3 Data Transference count setting Port 2 Option F47 0 About 40times sec 1 About 30times sec 2 About 20times sec 3 About 15times sec 4 About 10times sec 5 About 5times sec 6 About 3times sec Serial Printer Setting Weight Unit selection Printer F50 0 kg 1 g 2 t AUTO Print Selection F51 0 Whe...

Страница 29: ... Mode After SUB GRAND Total Print Automatically Deleted Paper Withdraw Rate setting After Finish Printing process F54 3 1 9 Whenever set value increased 1line will be added Printer Line Interval Selection Only for Continuous Printer format F55 3 1 9 Whenever set value increased 1line will be added SUB Total Print Mode Selection F56 0 Normal Mode 1 Normal Mode Average total value print Printing Lan...

Страница 30: ...0 99 00 setting Average Display mode not use 99 setting make average every 99pcs display data and display Steady LED Status Lamp Delay time setting F64 00 00 99 00 setting No delay for the Steady LED lamp 99 setting Delay during 9 9sec and LED lamp will be ON Tension and Compression setting F65 0 Not Use 1 Use All function Initialize Only for authorized personnel F77 Press ENTER KEY all function w...

Страница 31: ...play value with deduction as much as set value Ex Set 1000 actual weight 3000 then display 2000 only Analogue Output Setting only for the analogue option installation F83 XXXXXX At the set weight value analogue output will be maximized Ex Set 5000 then weight 5000 20mA or 10V will be output Span Value Check F89 XXXXXX At this function you can check the Calculated Span value If you have difficulty ...

Страница 32: ...rity mode only Bit Refer F30 Stop Bit 1 Parity Bit Non Even Odd Selectable on F function 30 Refer F30 Code ASCII STX 02H ETX 03H CR 0DH LF 0AH 1 9V LSB 0 1 2 3 4 5 MSB 6 0 9V Start Bit Data Bit Parity Bit Stop Bit 1 2 Standard Data Format 1 ID Number will not be transferred Refer F function 35 Including Decimal point k g CR LF Header 1 Header 2 Data Byte 8 or 9 byte F38 setting Unit Header 1 OL Ov...

Страница 33: ...splay Un Steady Header 2 NT Net Weight GS Net Weight under TARE Lamp Display Current Lamp Condition ON Off Data Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 1 Steady 1 Hold Print Gross Weight Tare Zero Data Bit Number 2B H Plus 2D H Minus 2D H Space 2E H Decimal Point Unit kg g t 1 4 Communication with PC Personal Computer or Other devices NT 302A 2 RxD TxD 3 3 TxD RxD 2 5 SG SG 5 Personal Comp...

Страница 34: ...for better performance Recommendable communication distance is about 1 2km 2 1 Signal Format Type RS 422 485 Format Baud Rate Refer F function 31 Data Bit 7 or 8 No Parity Stop 1 Parity Bit Even Odd No Parity Selectable Code ASCII STX 02H ETX 03H CR 0DH LF 0AH 1 LSB 0 1 2 3 4 5 MSB 6 0 2 2 Data Format Same as RS 232C Refer 6 1 Serial Interface 2 3 RS 422 Circuit Connection Start 1 Bit Data Bit Par...

Страница 35: ...ore than 1 1 000 Temperature Co efficiency 0 01 Max Loaded Impedance Max 500Ω When Weight display is Zero 4mA current will be output when Weight display is Full Capacity 20mA current will be output 3 3 Circuit LO terminal is not a GND so this LO terminal do not be connected with other GND terminal on other devices 1 Out 2 Com 4 N A 3 N A No 1 No 2 ...

Страница 36: ...m long distance Current Loop Interface supports up to 9 600 Communication Speed only 1 Signal Format As same as RS 232C Interface 1 20mA 0 0mA Only this power part is different 2 Data Format As same as RS 232C Interface 3 Communication with Other Devices Remote Display External Display 4 Current Loop Circuit NT 302A 1 RxD C L 2 RxD C L Remote Display External Display ...

Страница 37: ...A1 BCC ETX STX ID NO RSUB BCC ETX Sub Total Data STX ID NO RSUB P N 2 CODE_BUF 6 COOUNT 6 S T W 8 UNIT BCC ETX STX ID NO RGRD BCC ETX Grand Total Data STX ID NO RGRD P N 2 CODE 6 G T W 8 UNIT BCC ETX STX ID NO RFIN BCC ETX Weighing Condition STX ID NO RFIN FN Finished weight 6byte BCC ETX STX ID NO RFIN RN Under processing BCC ETX STX ID NO RCWD BCC ETX Memorized Data STX ID NO RCWD DATA2 BCC ETX ...

Страница 38: ... NO WDAT DATE BCC ETX ex STX ID NO WDAT 00000000 BCC ETX Date setting STX ID NO WDAT ACK BCC ETX or STX ID NO WDAT NAK BCC ETX STX ID NO WTIM TIME BCC ETX ex STX ID NO WTIM 000000 BCC ETX Time setting STX ID NO WTIM ACK BCC ETX or STX ID NO WTIM NAK BCC ETX STX ID NO WSNO S N 6 BCC ETX ex STX ID NO WSNO 000000 BCC ETX Serial No Change STX ID NO WSNO ACK BCC ETX or STX ID NO WSNO NAK BCC ETX STX ID...

Страница 39: ...STO ACK BCC ETX or STX ID NO WSTO NAK BCC ETX STX ID NO WSP1 SP1 6 BCC ETX ex STX ID NO WSP1 000000 BCC ETX SP1 set value change STX ID NO WSP1 ACK BCC ETX or STX ID NO WSP1 NAK BCC ETX STX ID NO WSP2 SP2 6 BCC ETX ex STX ID NO WSP2 000000 BCC ETX SP2 set value change STX ID NO WSP2 ACK BCC ETX or STX ID NO WSP2 NAK BCC ETX STX ID NO WSP3 SP3 6 BCC ETX ex STX ID NO WSP3 000000 BCC ETX SP3 set valu...

Страница 40: ...39 44 6 Serial Print Format Single Print Format Continuous Print Format Sub Total Print Format Grand Total Print Format ...

Страница 41: ... TEST 6 External input Digital Input TEST Mode TEST 7 Un Calibrated Analogue TEST Mode TEST 8 Function DATA setting Print Mode Enter to TEST Mode Turn on the power with pressing 3 KEY Then display will show then press No key and move to the certain TEST mode Exit from TEST Mode Press CLEAR KEY to exit from each TEST mode Then display will show Under TEST 3 mode press 3 KEY to exit TEST TEST SET CA...

Страница 42: ...about 350Ω 3 Isolate Resistance is more than 100Ω Weight Value is increased regular rate but not return to Zero 1 Load cell Error 2 Load cell connection Error 1 Check Load cell connection 2 Measure Load cell Resistance Weight Value is increased to under Zero Load cell Output wire SIG SIG is switched Make wire correction UN PASS display Load cell broken or Indicator connection Error Load cell Check...

Страница 43: ...ht is not loaded Check standard weight s weight with set value If there is difference between set value and real weight please re input the value set value is too small Err 07 1 Amp Gain is too small 2 Sig and Sig wire connection error 3 Test weight is not loaded Check standard weight s weight with set value If there is difference between set value and real weight please re input the value set val...

Страница 44: ...nction or defection caused by Modification or Repair without CAS permission Any kinds of Mal function Defection or External damage caused by operator Any kinds of Mal function Defection caused by using spare part from Non Authorized Distributor or Agent Any kinds of Mal function Defection caused by not following Warnings or Cautions mentioned on this manual Any kinds of Mal function Defection caus...

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