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KERN 770-12, Руководство по эксплуатации

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770/GS/GJ-BA-defsi-0023 123 

6.6  Synchronisation and Data Output Parameters 

 
 

Definition 

 
During data communication between the balance and an on-line device (computer), 
“telegram-style“ information consisting of ASCII characters is transmitted by the 
interface. 
For error-free data communication, the interface parameters, including the baud rate, 
parity and handshake mode as well as the character format, must be the same for both 
units. 
You can change these parameters in the balance operating menu so that they match 
those of the on-line device.  
If you do not plug a peripheral device into the interface port on the balance, this will not 
generate an error message. In this case, data will be output but not received. 
 

Handshake 

 
The balance interface has a 23-byte transmit buffer and a 40-byte receive buffer. 
You can access the balance operating menu to define various handshake parameters: 
 
Software handshake: 

- controlled by “XOFF“ and “XON“ 

Hardware handshake:  - after “CTS“ send 2 characters 

- after “CTS“ send 1 character 

 

What happens when you define a software handshake ?

 

 
Receiving device: 
“XOFF“ will not be transmitted until the receive buffer has stored the 26th character. 
The enable command “XON“ is given after the buffer has transmitted all characters up 
to the 14th character. If the device addressed does not understand the control 
command, the receiving device continues to operate additionally with a hardware 
handshake after it has received another 6 characters. 
 

Содержание 770-12

Страница 1: ...ng Weight 82 1 4 2 External Adjusting 83 1 4 3 Blocking the Adjusting Functions 83 1 5 DATA INTERFACE 84 1 6 BELOW BALANCE WEIGHING 85 1 7 ANTI THEFT LOCKING DEVICE 85 1 8 TROUBLESHOOTING GUIDE 86 1 9...

Страница 2: ...O GLP COMPLIANT 112 5 2 DATA PRINTOUT RECORD FOR APPLICATION PROGRAMS E G COUNTING 113 6 INTERFACE DESCRIPTION 114 6 1 GENERAL INFORMATION 114 6 2 INTERFACING DEVICES WITH THE BALANCE 114 6 3 GENERAL...

Страница 3: ...logical ID label for verified balances legal measuring instruments approved for use as legal measuring 14 AC jack instruments 15 Manufacturer s label with the CE mark of 4 Menu access switch conformit...

Страница 4: ...with metrological data approved for use as legal measuring for verified balances approved for use as instruments legal measuring instruments 4 Access switch 15 Manufacturer s ID label with the 5 Leve...

Страница 5: ...witch 5 Level indicator 17 Data interface port 6 PRINT key data output 18 Draft shield cover 7 CF key clear function 19 Glass draft shield cylinder 8 Function key F 20 Pan support 9 CAL key 10 ON OFF...

Страница 6: ...mark 3 Shield ring of conformity 4 Levelling foot 13 Lug for attaching an anti theft locking 5 TARE keys device 6 PRINT key data output 14 Level indicator 7 CF key clear function 15 AC jack 8 Function...

Страница 7: ...CE CE mark 4 Levelling foot of conformity 5 TARE key 13 Lug for attaching an anti theft locking 6 PRINT key data output device 7 CF key clear function 14 Level indicator 8 Function key F 15 AC jack 9...

Страница 8: ...e vibrations during weighing Protect the balance from aggressive chemical vapours Do not operate the balance in a hazardous area location Do not expose the balance to extreme moisture over long period...

Страница 9: ...his case the validity of the seal becomes void and you must have your balance re verified For model 770 60 Connecting the Balance to the Electronics Box Plug the cable into the socket of the electroni...

Страница 10: ...n Place the weighing pan on the balance For models GS GJ with a round weighing pan Place the shield disk on the balance Turn the disk counter clockwise until it stops and is secured Place the componen...

Страница 11: ...local line voltage Important Note Use only original AC adapters by KERN Use of AC adapters from other manufacturers even if these units have a registered approval rating from a national testing labor...

Страница 12: ...data interface is also electrically connected to the balance housing ground 1 2 4 Connecting Electronic Peripheral Devices Make absolutely sure to unplug the balance from AC power before you connect...

Страница 13: ...age Only after this time will the balance have reached the required operating temperature 1 3 2 Turning the Balance On and Off Standby Mode Press the ON OFF key to turn the display on and off 1 3 3 Se...

Страница 14: ...he balance that symbol will be displayed until you press a key During operation this symbol indicates that the balance processor is still busy processing a function and will not accept another command...

Страница 15: ...ting the appropriate menu codes For more information refer to part 2 Balance Operating Menu Each adjusting function can be interrupted by pressing the CAL key 1 4 1 Internal Adjusting for Balances wit...

Страница 16: ...weight in grams is then displayed Errors or interference at the start of the adjusting routine are indicated by the error code Err 02 If this is the case tare and press the CAL key again when a zero r...

Страница 17: ...absolutely sure to unplug the balance from AC power before you connect or disconnect a peripheral device printer or PC to or from the interface port To print or output data press the PRINT key For inf...

Страница 18: ...e the cover plate from the bottom of the balance To hook a sample on the hanger open the below balance port by removing the cover plate Important Note When you use below balance weighing hangers you m...

Страница 19: ...ance The special code remains displayed None of the keys has been pressed since the balance was turned on Press a key The weight readout changes constantly Unstable ambient conditions Too much vibrati...

Страница 20: ...ion that safe operation of the balance with the AC adapter is no longer guaranteed turn off the power and disconnect the equipment in a secure place to ensure that it cannot be used for the time being...

Страница 21: ...KERN GJ 6100 1M are conform to the requirements of the following EC guideline EC Council Directive on Electromagnetic Compatibility EMC Version 89 336 EEC Generic standards particularly Generic Emissi...

Страница 22: ...00 GJ 4103M BD BC 200 GJ 610 2M BA BC 200 MD BC 200 GJ 3100 2M BA BC 200 MA BC 200 GJ 4100 2M BD BC 200 GJ 6100 1M BA BC 200 correspond to the production model described in the EC type approval certif...

Страница 23: ...codes in the section entitled Balance Operating Parameters If you need to change any of the factory settings we recommend that you enter these changes along with the date in the column headed by Chan...

Страница 24: ...on the right next to the AC jack Press CAL until 8 appears Press PRINT until the 2nd number of the code appears Press CAL until 5 appears Press PRINT until the 3rd number appears when you move to the...

Страница 25: ...ote By turning of the access switch an accidental alteration of the menu settings can be avoided You can make this setting anytime you wish once you have accessed it However it is best if you wait to...

Страница 26: ...nual Filling Mode You can optimally adapt your balance to meet either of these requirements In the manual filling mode the display compensates for fluctuations of the load on the balance giving you es...

Страница 27: ...ction is activated any slight changes of the zero readout are automatically tared Code Auto Zero on 1 6 1 Auto Zero off 1 6 2 3 2 6 Adjusting and Linearisation Functions Using CAL Code external adjust...

Страница 28: ...1 2 Kilograms kg 0 001 1 7 3 3 1 3 Carats ct 5 1 7 4 3 1 4 Pounds lb 0 0022046226 1 7 5 3 1 5 Ounces oz 0 035273962 1 7 6 3 1 6 Troy Ounces ozt 0 032150747 1 7 7 3 1 7 Hong Kong taels tl 0 02671725 1...

Страница 29: ...ace Parameter Settings 3 4 1 Baud Rate 150 Baud 5 1 1 300 Baud 5 1 2 600 Baud 5 1 3 1 200 Baud 5 1 4 2 400 Baud 5 1 5 4 800 Baud 5 1 6 9 600 Baud 5 1 7 19 200 Baud 5 1 8 3 4 2 Parity Mark Parity 5 2 1...

Страница 30: ...put Parameter Coupling with the stability parameter Print on request data output only by pressed key or software command Auto print continuous automatic data output Code Print on request regardless of...

Страница 31: ...y update 6 3 1 2 display updates 6 3 2 3 5 4 Automatic Taring after Data Output This convenient setting allows you to check weigh a series of samples or products without having to unload the balance t...

Страница 32: ...n program listed in the corresponding description The ID code increases the data output format for each weight readout from 16 to 22 characters ID code for data output Code Without 7 2 1 With 7 2 2 3...

Страница 33: ...have indicated all factory set codes with an One thing you should do when you want to set the code for a different program or when someone else has already operated the balance is Select the reset fun...

Страница 34: ...n the end Net Total i e without the tare container s weight Net Total Weighing Balance Readout 1 Place tare container on weighing pan 0 0 g tare by pressing the TARE key 2 Weigh in 1st component e g 5...

Страница 35: ...F 100 appears on the display To change the setting Briefly press the F key To store the percentage Hold down the F key for more than 2 seconds When you exit the reference storage mode Err 22 may brief...

Страница 36: ...2 1 5 Quick determination of the dry weight of a sample Balance Readout Place container on weighing pan 22 65 g CF TARE 0 00 g Add prepared sample to container 4 61 g F 100 0 For moisture analysis pr...

Страница 37: ...nce sample quantity can be changed in cycles by you Choose from the following settings 5 10 20 50 and 100 To activate this function Hold down the F key for more than 2 seconds until rEF pcs appears on...

Страница 38: ...nting 2 1 4 Counting bulk quantities of items with the same weight Balance Readout Place container on weighing pan 22 65 g CF TARE 0 00 g Add 10 counted parts Confirm reference sample quantity by F 10...

Страница 39: ...is indicated as a stable readout on the weight display Manual or Automatic Start Mode Manual Start Automatic Start Mode Averaging is always started by pressing the F key The symbol or AUTO flashes du...

Страница 40: ...wn mode Changing the Number of Sub weighing Operations The number of sub weighing operations used to average a weight can be changed in cycles by you You can choose from the following settings 5 10 20...

Страница 41: ...weighing operations Balance Readout Place animal weighing bowl on balance CF TARE 0 00 g Change number of sub weighing operations e g set number to 20 Hold down F for more than 2 seconds rEF 10 Press...

Страница 42: ...hing operations is changeable If you do not enter a number averaging will be done based on the number shown on the display factory setting 10 sub weighing operations Simple weighing of animals Balance...

Страница 43: ...d mode by setting the respective code in the balance operating menu ISO GLP compliant printout or record mode Code Off 8 10 1 Only for adjusting and linearisation functions 8 10 2 Always on e g adjust...

Страница 44: ...or entering a workstation or operator ID Date 30 May 94 Current date Start 10 05 30 Start of application Cal Extern Adjusting mode in this case external adjusting Set 200 00000g Adjusting weight value...

Страница 45: ...rding of data press CF Generation of an ISO GLP compliant printout or record is also ended when an adjusting operation is started The printout can consist of the following lines Model 770 Balance mode...

Страница 46: ...an ISO GLP record has started the printout heading and the reference data will automatically be printed once you press PRINT Then the measured value will be output Press PRINT to output weighing data...

Страница 47: ...s can be connected to the data interface port on the balance 6 2 Interfacing Devices with the Balance Please note that the interface port is electrically connected to the protective grounding conducto...

Страница 48: ...hardware handshake lines with Clear To Send CTS and Data Terminal Ready DTR Transmission rates 150 300 600 1 200 2 400 4 800 9 600 19 200 baud Character coding 7 bit ASCII Parity Mark space odd even...

Страница 49: ...r ID precedes the 16 characters reserved for the weight or other value Data Output Format with 16 Characters Display segments that are not activated or sign leading zeros other than zeros before the d...

Страница 50: ...Space 3rd 10th Weight with a decimal point leading zeros space 11th Space 12th 14th Unit symbol or space 15th Carriage Return CR 16th Line Feed LF If the weighing system has not been stabilised no uni...

Страница 51: ...3 14 15 16 A B CR LF The following status codes are output for A B Tare H Overload C Adjust L Underload All numerals indicated in stable readout Special error dependent codes 1 2 3 4 5 6 7 8 9 10 11 1...

Страница 52: ...C C C V x x x x x x x x U U U CR LF V Plus or minus sign Space x Digit U Unit Decimal point C Letter for an ID comment CR Carriage Return LF Line Feed When special data codes are output the letters S...

Страница 53: ...up to 13 characters Each character must be transmitted with a start bit a 7 bit ASCII coded character a parity bit and one or two stop bits You can define the parity baud rate handshake mode and the...

Страница 54: ...he balance off and back on again The balances will operate according to the commands available up until the processor is reinitialised Once the balance has been turned on the processor will always rec...

Страница 55: ...commands ESC f 0 CR LF Function key F ESC f 1 CR LF Function key CAL ESC s 3 CR LF Clear Function CF ESC x 0 CR LF Perform sensitivity test ESC x 1 CR LF Output balance model ESC x 2 CR LF Output seri...

Страница 56: ...ill not generate an error message In this case data will be output but not received Handshake The balance interface has a 23 byte transmit buffer and a 40 byte receive buffer You can access the balanc...

Страница 57: ...omatic data output parameter is defined when data output is controlled by application programs Once XOFF has been received it prevents further transmission of characters When XON is received it re ena...

Страница 58: ...ontrol to the balance interface port print function see part 2 For the switch use pins 8 and 15 of this port and a cable up to 1 5 m or 5 ft long RS 232C If data output is requested by a software comm...

Страница 59: ...6 1 3 19 200 Baud 5 1 8 Auto print without stability 6 1 4 Parity Code Changes Auto print Mark Parity 5 2 1 at stability 6 1 5 Space Parity 5 2 2 Odd Parity 5 2 3 Print Interval after Code Changes Ev...

Страница 60: ...hart below and disconnect any lines that are assigned as Internally Connected e g Pin 6 Failure to do so can result in malfunctioning or may even completely ruin your balance and or on line peripheral...

Страница 61: ...128 770 GS GJ BA defsi 0023 Cabling Diagram Diagram for interfacing a computer or a peripheral device to the balance using the RS 232 C V24 standard and interface cables up to 15 m 50ft long...

Страница 62: ...mg 0 1 mg 0 1 mg 0 1 mg Linearity 0 2 mg 0 2 mg 0 2 mg 0 2 mg 0 2 mg Stabilisation time 3 sec 3 sec 3 sec 3 sec 12 3 sec Adjusting weight 100 g E2 200 g E2 internal internal internal Technical Data U...

Страница 63: ...ty 0 001 g 0 01 g 0 01 g 0 1 g Linearity 0 002 g 0 01 g 0 02 g 0 1 g Stabilisation time 2 sec 2 sec 2 sec 2 sec Adjusting weight 200 g F1 500 g F1 2000 g F1 5000 g F2 Common Characteristics Permissibl...

Страница 64: ...n 0 02 g 0 5 g 0 5 g 5 g Reproducibility 0 001 g 0 005 g 0 01 g 0 05 g Linearity 0 002 g 0 01 g 0 02 g 0 1 g Stabilisation time 2 sec 2 sec 2 sec 2 sec Adjusting weight internal Common Characteristics...

Страница 65: ...git 1 3 1 Austrian carats 1 7 17 3 1 17 0 5 digit 1 3 2 factory setting partly Tola 1 7 18 3 1 18 1 digit 1 3 3 depends on balance Baht 1 7 19 3 1 19 2 digits 1 3 4 model Mesghal 1 7 20 3 1 20 4 digit...

Страница 66: ...al code 7 2 2 Auto print Code Code stoppable by PRINT key 6 2 1 Universal switch Code off 8 10 1 not stoppable 6 2 2 PRINT 8 4 1 on 8 10 3 TARE 8 4 2 Data output after Code Calibr Lin CAL 8 4 3 Reset...

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