Models 6702, 6710, and 6720 User Manual
Contents
1. Models 6702 6710 and 6720 User Manual UNITED STATES This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense CANADA This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus set out in the radio Interference Regulations of the Canadian Department of Communications Le present appareil numerique n emet pas de bruits radioelectroniques depassant les limites applicables aux appareils numeriques de la Class A prescrites dans le Reglement sur le brouillage radioelectrique que edicte par le ministre des Communications du Canada CAUTION Risk of electrical shock Do not remove cover No user serviceable parts inside Refer servicing to qualified service personnel Weigh Tronix reserves the right to change specifications at any time Specifications IMPORTANT Weights amp Measures re2. Select the RS 232 communication protocol from below NCI NCI standard ECR Cash resister compatible 8213 8213 compatible Sharp 2250 2250 compatible Swintec 34 F 34 MF compatible Sweda Mexico 7 ATT A T amp T compatible Configuration Mode Continued Step by Step Instructions fo ConF Mode Follow these steps to access and configure the items in the ConF menu Refer to figure 3 1 From the dIAG display press the ZERO key OR From normal weighing mode move switch 1 to Menu Mode or OPEN position then press the ZERO key 2 Press the TEST key 3 Press the TEST key 4 Use the ZERO key to toggle between the two choices Press the TEST key when the choice you want is displayed 5 Press the ZERO key once 6 Press the TEST key 7 Use the ZERO key to scroll the choices found in Table 1 When the choice you want is displayed press the TEST key 8 Press the ZERO key twice 9 Press the TEST key 10 Press the ZERO key to scroll through the choices When the choice you want is displayed press of the TEST key 11 When you are finished with configuring your scale press the ZERO key three times which displays donE then press the TEST key ConF is displayed FiLt is displayed This stands for filtering The current setting FAST or SLO is displayed Your choice is accepted and the display shows FILt BAUD is displayed
3. or lt LF gt xxxx xxoz lt CR gt Returns lb oz wt in 10X with units lt LF gt hh lt CR gt lt ETX gt plus scale status if required by application or lt LF gt xxxxxx lt CR gt Returns contents of display lt LF gt hh lt CR gt lt ETX gt other than wt amp scale status all else lt LF gt lt CR gt lt ETX gt Unrecognized command 11 Communication Continued Weight Command W Scale Status Command S Zero Command Z Implementation of this command will be mandatory This command causes the scale to return to a WYSIWYG What you see is what you get of its display when it is in normal weighing mode That is the scale will send whatever is showing on its display including any minus sign and or decimal point If it is weight the units of measure will be returned in addition to the displayed weight For decimal weight the length of the weight field will be equal to the length of the scale s display plus two for the units e g Ib Units of measure will appear in their ANSI standard abbreviation form Ib for pounds kg for kilograms etc If the scale is displaying all upper bars over capacity the weight field will be filled with carets If the scale is displaying all lower bars under capacity the weight field will be filled with underscores If the scale is displaying middle bars zeroing error the weight field will be filled with dashes These examp
4. ROM test test w AZT test w o 4 AZT Diagnostics Mode Diagnostic dIAG The diagnostic AIAG mode menu lets you test specific areas of the scale s function Mode These areas are Display dISP RAM rA ROM rO Input Output I O Division Test w AZT divA Division test w o AZT divn Follow these steps to access and the tests in t Step by Step Instructions for 1 dIAG Mode 2 Press the TEST key 3 Press the TEST key to perform the display test described earlier 4 Press the ZERO key From normal weighing mode move switch Ito the Menu Mode or OPEN position See Figures 1 amp 2 Shows the version and revision of the software followed by a display segment test Performs a non destructive test of RAM in the processor Displays pASS or fAIL Performs a checksum of all locations in ROM in the processor Displays pASS or fAIL Data is output by the scale and through the use of a loopback connector the data is immediately read back into the receive channel and verified against what was sent PASS or FAIL is displayed Requires a jumper short between transmit amp receive data lines Weight data is normalized to 120 000 counts of displayed resolution AZT is enabled Weight data is normalized to 120 000 counts of displayed resolution AZT is disabled he dIAG menu Display shows dIAG dISP is displayed This stands for display Display test i
5. of the scale s display plus three or four and for pounds ounce it will be the display length plus five or six depending on the presence of a decimal point When the scale receives an unrecognised or unsupported command it returns a question mark The ECR serial communication protocol adheres to the pre existing standard for ECR scales It also includes optional commands and the new scale status bit definitions described in the general protocol as extensions which do no affect backwards compatibility This standard will be used by all other products other than ECR scales Symbol Key lt ETX gt End of Text character 03 hex lt LF gt Line Feed character OA hex lt CR gt Carriage Return character OD hex lt SP gt Space 20 hex x Weight numeric digit hh Two status bytes uu Units of measure LB KG OZ G etc all upper case Mandatory Commands Command Scale Response Results W lt CR gt lt LF gt xxx xxuu lt CR gt Returns decimal weight with units lt LF gt Shh lt CR gt lt ETX gt plus scale status or lt LF gt Shh lt CR gt lt ETX gt Scale status only if wt lt 0 in motion or out of capacity or zero error S lt CR gt lt LF gt Shh lt CR gt lt ETX gt Returns to scale status Z lt CR gt lt LF gt Shh lt CR gt lt ETX gt Scale is zeroed returns status all else lt LF gt lt CR gt lt ETX gt Unrecognized command Scale bits will be the same as for the general protocol 13 Communication Continue
6. Mode used when calibrating the scale The structure for these menus is shown in Figure 3 The following page is specific information about each mode and following that are the step by step instructions for accessing them Internal amp External Display Selection The 6720 remote display is used for weight only the ZERO and TEST keys are inoperable when the internal display is in use Dip switch 3 select internal or external display keypad operation Normal Weighing Mode Press the ZERO key to move in the menu Press the TEST key to move l in the menu Set switch 1 to the OPEN position After making a selection the display generally Figure 3 returns to the first parameter in the list 67XX Menu Structure After choosing donE the display shows dIAG l 7 002 9 995 15 005 30 01 60 02 9 995 15 005 29 99 30 01 60 02 99 95 120 05 Load 0 Load What is displayed here depends on what 4 capacity and unit of measure you ve chosen 10 above You may choose alternate calibration points by pressing the ZERO key paca Feat a from l a list of 15 baud ATT and parity options Fast 4 If scale is placed in a noisy environment set slow filter to minimize the effects jase ex o jH oo aa an a Performs Performs Performs Performs Performs Performs Returns to a display a test a test an input output a division a division dIAG mode test of RAM
7. The current baud and parity choice is displayed Your choice is accepted and the display FILt PROT is displayed This stands for protocol The current RS 232 communication protocol is displayed Your choice is accepted and the display shows FILt dIAG is displayed Calibration Mode Step by Step Instructions for CAL Mode The calibration CAL mode menu lets you calibrate your scale The items in the calibration menu are as follows Line Frequency 50 or 60H Pounds Kilograms LB or KILO Capacity 9 995 etc Select the AC line frequency you are using Selects the unit of measure of your calibra tion test weights Select the capacity of your scale Follow these steps to calibrate your scale refer to Figure 3 1 From the dIAG display press the ZERO key twice OR From normal weighing mode move switch 1 to the Menu Mode or OPEN position then press the ZERO key twice Press the TEST key Press the ZERO key to toggle between the choices When the choice you want is displayed press the TEST key Press the ZERO key to toggle between the choices When the choice you want is displayed press the TEST key Press the ZERO key to toggle between the choices When the choice you want is displayed press the TEST key Clear all weight from the scale platter and press the TEST key CAL is displayed This stands for calibration 50 hor 60 H is displ
8. Weigh Tronix distributor for service divA is displayed This stands for the high resolution test with AZT enabled The display shows the weight on the scale at a resolution of 120 000 counts the test dISP is displayed Press the ZERO key five times Press the TEST key to perform this test divn is displayed This stands for the high resolution test without AZT enabled The display shows the weight on the scale at a resolution of 120 000 counts 6 Diagnostics continued 15 Press the TEST key to stop the the test 16 When you are finished with the test press the ZERO key six times which displays donE and press the TEST key or place switch 1 back to normal mode to return back to normal weighing mode dISP is displayed dIAG is displayed Configuration Mode The configuration ConF mode menu lets you configure your scale to your specific application needs The items you can configure are as follows Filtering FiLt Choose between FAST and SLO filtering Slow should be chosen in area susceptible to vibration Choose FAST filtering for more stable conditions Baud bA Ud Choose a baud and parity from table 1 DISPLAY BAUD PARITY 12e 1200 Even 24e 2400 Even 48 e 4800 Even 96e 9600 Even 19 2 e 19 200 Even 120 1200 Odd 240 2400 Odd 48 0 4800 Odd 960 9600 Odd 19 20 19 200 Odd 12n 1200 None 24n 2400 None 48 n 4800 None 96 n 9600 None 19 2 n 19 200 none Protocol Prot
9. an ECR device The 67XX 15 pin style is configured as a 4 Bit Parallel standard from the factory To configure the 67XX_ to the RS 232 interface operation there is a dip shunt jumper located at JMP 2 on the main PCB that needs to be positioned with shortening pins placed away from the DE 15 connector or to the inside of the PCB The second uses a DE 9 connector and is only capable of communicating in the EJA Standard RS 232 method NCI Serial This standard will be used by all products other than ECR scales Communications Symbol Key lt ETX gt End of Text character 03 hex Protocol lt LF gt Line Feed character OA hex lt CR gt Carriage Return character OD hex lt SP gt Space 20 hex x Character from display including minus sign hh Two or more status bytes uu Units of measure lb kg oz g etc using ANSI standard abbreviations Mandatory Commands Command Scale Response Results W lt CR gt lt LF gt xxxx xxuu lt CR gt Returns decimal weight with units lt LF gt hh lt CR gt lt ETX gt plus scale status or lt LF gt xxxxxx lt CR gt Returns contents of display lt LF gt hh lt CR gt lt ETX gt other than wt amp scale status S lt CR gt lt LF gt hh lt CR gt lt ETX gt Returns to scale status Z lt CR gt lt LF gt hh lt CR gt lt ETX gt Scale is zeroed returns status H lt CR gt lt LF gt xxxx xxuu lt CR gt Returns decimal wt in 10x with lt LR gt hh lt CR gt lt ETX gt units plus scale status
10. ayed This is the AC line frequency That choice is accepted and LB or KILO is displayed This is the unit of measure of your test weights That choice is accepted and a scale capacity is displayed Example 9 995 That choice is accepted and LOAD 0 is displayed After a brief wait LOAD 10 is displayed 10 is used only as an example here Calibration Mode Continued 7 Place ten pounds of test weights on the scale and press the TEST key After a brief wait DONE is displayed 8 Press the TEST key DIAG is displayed or 9 Return switch 1 to the closed position The scale returns to normal weighing mode The scale is now tested configured and calibrated It is ready for use in your application Any system errors detected by the scale will be displayed as the letter E followed by a two digit error code Press the TEST key to continue operation If a calibration error occurs the only way to clear it is by recalibrating the scale The error codes are broken down into two hexadecimal numbers with each bit defining a single error condition The error codes are defined as follows Most Significant Least Significant Digit Digit 8421 8421 Reserved Calibration error For _ ROM error Future RAM error Use Serial EE PROM error 10 Communication The 67XX is capable of interfacing with an EJA Standard RS 232 full duplex asynchronous smart device or 4 bit parallel interface for output of weight data to
11. d Serial Data Transmission Modem control lines will not be supported for RS 232 4 Bit Parallel ECR Interface Baud Rates 1200 2400 4800 9600 or 19 2K Word Length 10 Bits 1 Start 7 Data 1 Parity 1 Stop Parity Even Odd or None The scale is DTE The 15 pin version of the 67XX is shipped configured to function as a 4 Bit Parallel interface device Follow these steps to configure the scale to serial RS 232 interface operation 1 Locate the dip shunt jumper at JMP2 on the main PC board 2 Place the jumper so the shorting pins are located away from the DE 15 connector at end of the PC board See figure 4 below O00 4 Pasilion of sharing jumpers for 4 bt poralel operation ar ae TT ai E Connectar M ETTA JMP2 reverse for lt AT gt R 232 lt LI OO O O EL Figure 4 Partial view of the main PC Board 14 Communication Continued Interface Cable The scale end of the interface cable plug is a DA 15 pin socket The other end is as required by your application Below is a pin and signal list for the DA 15 pin interface cable Co I AHA WHE ee e e e e nan A UU N e O RS 232 RXD TXD Sig Gnd Data 4 Data 8 DSR DTR BHZ In Motion Sig Gnd Enable Sig Gnd Clock Sig Gnd Sig Gnd 4 Bit Parallel Data 1 Data 2 Sig Gnd Data 4 Data 8 Over Capacity NC BHZ In Motion Sig Gnd Enable Sig Gnd Clock Sig Gnd Sig Gnd T
12. display limit is exceeded About This Manual This manual covers the service needs of the model 6702 6710 and 6720 Point of Sale POS bench scales This maul is divided into these general areas e About This Manual e Modes of operation Diagnostics Mode Configuration Mode Calibration Mode e Error Codes Communications Major section headings of the manual appear in a black bar as shown above Subsection headings appear in the left column of each page with corresponding information in the wider right column Notes and tips about operation of the scale will appear in italized text in the left column where appropriate If you have any questions about your scale please contact your local dealer Modes of Operation A ing the Men The 6702 6710 6720 powers up in normal weighing mode ready for weighing opera ccessiie tne rene tions You can access the MENU Mode by setting switch 1 shown in figure 1 Mode Model 6702 amp 6710 or figure 2 Model 6720 to the OPEN or Menu Mode position Bottom view of 6710 scale Figure 1 6702 amp 6710 Switch location Modes of Operation Continued Top view of 6720 scale with platter removed Figure 2 6720 Switch Location With switch 1 in the Menu Mode or Open position there are three modes available to you They are as follows Diagnostic Mode used to test areas of the scale s function Configuration Mode used to configure your scale for your application Calibration
13. here is one 9 pin DE type female connector accessible at the rear of the unit The functional pinout of this cable is that of a standard PC which is as follows F 0 oo uoua A U Ne DE 9 Female Name JMP 1 TXD Scale Direction OUT DE 9 Male Host Name Direction DCD IN RXD IN TXD OUT DTR OUT GRD DSR IN RTS OUT CTS IN RI IN 15 01 20 98 PN 7424 14787C Printed in USA WEIC H t Rows 3990 Brickway Blvd Santa Rosa CA 95403 Telephone 1 707 527 5555 1 800 982 6622 Facsimile 1 707 579 0180 1 800 847 6743
14. les are for scale with a 6 digit display Implementation of this command will be mandatory There will be at least two status bytes If bit 6 of the second status byte is set then there will be a third byte Bit 6 of each byte will indicate whether or not another status byte follows The bit will be clear 0 in the last status byte At this time only the first three bytes are defined Others may be added in the future The status bits are defined as follows Bit First Status Byte 0 1 Scale in motion 0 Stable 1 1 Scale at zero 0 Not at zero 2 1 RAM error 0 No RAM error 3 1 EEPROM error 0 No EEPROM error 4 Always 1 5 Always 1 6 Always 0 7 Parity Second Status Byte 1 Under capacity 0 Not under capacity 1 Over capacity 0 Not over capacity 1 ROM error 0 No ROM error 1 Faulty calibration data 0 caliobration data okay Always 1 Always 1 1 Byte follows 0 Last byte Parity Implementation of this command will be mandatory If zeroing criteria are met the scale will is zeroed In any case scale status is returned 12 Communication Continued High Resolution Command H Undefined Commands ECR Serial Communicatio Protocol This command will be optional It is the same as the W command except that when weight is returned it is returned with ten times the scale s displayed resolution Thus for decimal weight the length of the weight field is equal to the length
15. quires inspection of scale before scale is placed into operation Capacity Model Capacity Ib Resolution 6702 7 10 x 005 15 x 005 6702 15 30 x 01 6710 7 10 x 005 15 x 005 6710 15 30 x 01 6720 7 10 x 005 15 x 005 6720 15 30 x 01 6720 30 60 x 02 6720 60 100 x 05 120 x 05 These capacities require a 6 digit display Model 6702 US amp Canada Approved Legal for trade Agency NTEP approval COC 95 070A3 Requirements Canada COC AM 5076 Zero window Transformer voltage Frequency Power Requirements Over Capacity limits Model 6710 US amp Canada Approved Legal for trade NTEP approval COC 92 051A2 95 070A3 Canada COC AM 5076 Model 6720 US amp Canada Approved Legal for trade NTEP approval COC 95 070 Canada COC AM 5076 Capacity kg 7x 002 15 x 005 7x 002 15 x 005 7x 002 15 x 005 30 x 01 60 x 02 Divisions 2000 3500d 3500d 3000d 2000 3500d 3500d 3000d 2000 3500d 3500d 3000d 3000d 2000 3000d 3000d Initial automatic zero setting is 10 of maximum capacity active at power up Manual zero setting range is 2 of maximum capacity active using the ZERO key Input Output 15 VDC 3 Amps DC minimum 50 60 Hz Standard 0 1 amp maximum 120 VAC 10 15 Standard 3 wire w ground Over capacity indication will be given with upper dashes on the display whenever 9d over maximum capacity is exceeded or the four digit
16. s performed and the shows dISP after the test is completed rA is displayed This stands for the RAM test Diagnostics Mode continued Step by Step Instructions for dIAG Mode Press the ZERO key to scroll through lists of selections Press the TEST key to make a selection If you want to skip a test press the ZERO key to scroll to the next test dIAG will flash every 15 seconds during the high resolution test to remind you that you are doing a test and not seeing normal weight readings 11 12 13 14 Press the TEST key to perform the RAM test Press the ZERO key twice to scroll to the ROM test Press the TEST key to perform the ROM test Press the ZERO key three times PASS or FAIL is displayed briefly then dISP If the test fails contact your local Weigh Tronix distributor for service rO is displayed This stands for the ROM test PASS or FAIL is displayed briefly then dISP If the test fails contact your local Weigh Tronix distributor for service to scroll to the I O test I O is displayed This stands for the With a loopback connector in place press the TEST key to perform the I O test Press the ZERO key four times Press the TEST key to perform this test Press the TEST key to stop Input Output test PASS or FAIL is displayed briefly then dISP If the test fails check your connections and or contact your local
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