background image

 

 18 

 
 
6.5.2. Calibration Procedure 
PROCEDURE KEY 

OPERATION 

DISPLAY 

Remarks 

 1. Enter calibration mode. 

[REZERO]  [

 DIGIT] 

[TARE] [TARE] 

888888 

Press and hold 

[REZERO]

 key  

while pressing 

[DIGIT]

[TARE],

  

 

 

|           1 

[TARE]

 then release 

[REZERO] 

key.

 

 

 

 

 

2. Enter the minimum display. 

 [

↑↑↑↑

 INCR] 

|           2 

Press  

[

↑↑↑↑

 INCR]

 key.       (Ex. 0.002) 

 

[REZERO] 

 

[

 00.000 

 

 

Press 

[REZERO]

 to 

advance through 

calibration

 

 

 

 

 

3. Enter the capacity weight. 

[

]  [ 

↑↑↑↑

 ] [ 

↑↑↑↑

 ] [ 

↑↑↑↑

 ] [ 

↑↑↑↑

 ] 

↑↑↑↑

 ] [ 

↑↑↑↑

 ] 

 

[

 06.000 

   

 

Press

 

[DIGIT] 

once and

 [

↑↑↑↑

 INCR]

 key 

six times.                          (Ex. 6KG)

 

 

[REZERO] 

 

 06.000 

 

 

Press 

[REZERO]

 to 

advance through 

calibration

 

 

 

 

 

4. Enter weight to be used for 
calibration.   (If other than 
capacity.) 

[

]  [ 

↑↑↑↑

 ] [ 

↑↑↑↑

 ] [ 

↑↑↑↑

 ] [ 

↑↑↑↑

 ] 

↑↑↑↑

 ] [ 

↑↑↑↑

 ] 

 

 02.000 

   

 

Press

 

[DIGIT] 

once and 

[

↑↑↑↑

 INCR]

 key 

six times.                          (Ex. 2KG)

 

 

[REZERO] 

 

CAL    0 

Press

 [REZERO]

 to 

advance through 

calibration

 

 

 

 

 

5. Set zero point. 

[REZERO] 

 

CAL   SP 

 

 

 

 

 

6. Place weight on platter 
from step 4. 

[REZERO] 

 

xxxxxx 

When calibration is complete scale 
shows internal count. 

 

 

 

 

7. Exit internal count mode. 

[TARE]

 

 xx.xxx 

Press 

[TARE]

 key to return to 

weighing mode.

 

 

 

 

 

8. Rezero scale place weight 
on scale to test calibration. 

[REZERO] 

 

 

 

         
          
     

 

 
 
6.6.  Span Enable Switch Check 
        This Mode Is Provided To Check The Status of The Span Switch.  The SPAN SWITCH is  
        on the main board near the pre-amp housing and is labeled JP 1. See Figure on Page 19. 

                   
              Accessing Mode 

                   1.

 Press and hold down the 

[REZERO]

 key. 

                  

 2.

 While holding , press the

[TARE] 

  key, the

[

 DIGIT]

 key, the 

[

 DIGIT]

 key. 

                   3.

 Then

 

release the

 [REZERO]

 key. 

 
When Calibration is enabled  Display Shows :   S-   ON 

DISCONTINUED

Summary of Contents for Digi DI-28

Page 1: ...Op p p pe e e er r r ra a a at t t tii i io o o on n n nM M M Ma a a an n n nu u u ua a a all l l M M M Mii i in n n nii i i B B B Be e e en n n nc c c ch h h h S S S Sc c c ca a a all l le e e e D I S C O N T I N U E D ...

Page 2: ...ii D I S C O N T I N U E D ...

Page 3: ... 1 Power On 12 5 2 Tare Subtraction 12 5 2 1 One Touch Tare 12 5 2 2 Digital Tare 12 5 3 Battery Life Check 12 5 4 Set Point Value Entry 13 5 5 Changing Weight Units 13 6 0 PROGRAMMING 14 6 1 DI 28 Key Function Summery 14 6 2 Internal Count 14 6 3 Set Up And Calibration 15 6 4 Specification List 15 17 6 5 Span Adjustment 17 18 6 6 Span Enable Switch 18 7 0 DI 20 OPTIONS 19 7 1 Battery Option 19 7 ...

Page 4: ...ble to support single load cells that have an output range of 0 4mV V to 4 0mV V and is able to support up to 4 load cells when used with the AC DC adapter This indicator features ON OFF REZERO TARE for both one touch and digital key operation A recharging circuit is incorporated for use with rechargeable NiCAD batteries For a list of platforms sizes and available capacities see page 3 This instru...

Page 5: ... 500 LB 1000 LB S PL floor 30 x 30 36 x 36 1000 lb to 3000 lb S PL floor 48 x 48 48 x 72 60 x 60 60 x 84 2500 lb to 25000 lb Ramps Other Capacities And Stainless Steel Platforms Also Available Choosing A Capacity Decimal Location Minimum Weight Display Resolution Capacity Decimal Location Minimum Weight Display Resolution Available Capacities 0 0000 1 1 2000 1lb 2 5lb 3lb 5lb 6lb 0 000 2 1 2500 10...

Page 6: ...only See 2 2 4 below or 6x 1 5V size C battery alkaline or rechargeable Temperature Range 10 to 40 C Humidity 15 to 85 R H Power Consumption 0 3 to 1 5 Watts 2 2 3 Display Specifications Display Device LCD Liquid Crystal Display Character Height 25mm No of Digits 6 Digits including minus sign digit 2 2 4 AC DC Adapter Specifications a 9 5 0 5mm b Inside 2 1 0 5mm Outside 5 5 0 5mm a b D I S C O N ...

Page 7: ...ter unpacking a visual inspection of the instrument should be performed If any damage has been incurred during transportation the shipper and DIGI MATEX INC should be notified immediately Instructions for assessment of damage and further procedures will then be determined 3 3 Repackaging If at anytime the DI 28 weight indicator must be returned for modification calibration or repair be sure that i...

Page 8: ...6 3 4 1 Unlocking Procedure D I S C O N T I N U E D ...

Page 9: ...7 3 4 2 Unlocking Procedure D I S C O N T I N U E D ...

Page 10: ...8 3 5 1 Mini Grand Assembly D I S C O N T I N U E D ...

Page 11: ...9 3 5 2 DI 28 Adapter Plate D I S C O N T I N U E D ...

Page 12: ...and Display This part of the procedure is used to verify proper operation of various switches and displays The following functions will be tested in this procedure A Tare Entry B Digital Tare Entry 4 2 1 One Touch Tare a Press REZERO key to rezero the scale b Place the empty container on the scale and press the TARE key once The Weight Display should now read zero with the empty container on the s...

Page 13: ... or setpoint weight on selected digit when setting data Manual transmit key for RS 232 output 4 3 2 Lamps Indicators Name Functions BATTERY LAMP On when battery becomes too weak and needs to be replaced recharged O ZERO LAMP On when weight is stable at zero point NET NET LAMP On when tare is subtracted g GRAM LAMP On when grams are used as weighing unit lb kg LB KG LAMP On when pounds are used as ...

Page 14: ... entry When the tare weight is known PROCEDURE KEY OPERATION DISPLAY INDICATOR 0 NET Stand by status 0 000 1 Move cursor to the left two digits t00 0 0 0 2 Set tare value by increasing the value t00 0 2 0 3 Enter the tare value 0 020 Note 1 To clear the tare weight press TARE key Note 2 0 and 2 means that the cursor is blinking 5 3 Battery Life Check The battery life can be checked PROCEDURE KEY O...

Page 15: ...nd keys 04 000 9 Store the data 0 000 Note To exit from setpoint entry mode without storing the data press TARE key instead of RE ZERO key 5 5 Changing Weight Units kg g lb PROCEDURE KEY OPERATION DISPLAY INDICATOR 0 NET g lb Stand by status 0 000 1 Allow user to switch between KG g and lb Assuming scale is calibrated in KG 5 000 Ex 5kg 2 To switch to g Press REZERO key and hold followed by then r...

Page 16: ...EXIT SELECT DIGIT INCREASE NUMBER SPAN SWITCH STATUS REZERO T D D BATTERY LIFE CHECK REZERO T D T EXIT D DIGIT I INCR T TARE 6 2 Internal Count This function is provided to check the internal count value from the A D pre amp To Enter Internal AD Count Mode 1 Press and hold down the REZERO key 2 While holding press the DIGIT key two times the TARE key once 3 Then release the REZERO key In This Mode...

Page 17: ...ey Used to exit from specification mode THE SLEEP TIMER IS LOCATED IN OPERATIONAL SPECS Spec 50 sleep timer 0000 none to 1111 15 min 6 3 2 Specification Change Continued Function key for spec change Accessing Weights Measures Specs 00 09 20 29 1 Press and hold down the REZERO key 2 While holding press the DIGIT key the TARE key the DIGIT key 3 Then release the REZERO key In This Mode Each Key Func...

Page 18: ...Not Used Digital Tare 0 no 1 yes Tare Limit 0 50 1 100 Spec 21 One Touch Tare Clear 0 no 1 yes Rezero In Tare 0 no 1 yes Not Used Not Used Spec 22 23 Not Used Spec 24 load cell sensitivity mv V 0000 4 00mV V 0001 3 75mV V 0010 3 50mV V 0011 3 25mV V 0100 3 00mV V 0101 2 75mV V 0110 2 50mV V 0111 2 25mV V 1000 2 00mV V 1001 1 75mV V 1010 1 50mV V 1011 1 25mV V 1100 1 00mV V 1101 0 80mV V 1110 0 70m...

Page 19: ...put 0 no 1 yes Send Header As Text 0 no 1 yes Spec 54 RS 232 Output 0 Disable 1 Enable 0 0 0 1200 bps 0 1 1 9600 bps Baud Rate 0 0 1 2400 bps 1 0 0 19200 bps 0 1 0 4800 bps Spec 55 Parity 0 0 no parity 0 1 odd 1 0 even Stop Bit 0 1 bit 1 2 bits Data Length 0 7 bits 1 8 bits Spec 56 58 Not Used Spec 59 Remote Trigger 0 Disable 1 Enable Communication Mode 0 stream 1 manual RS 232 Time Out 0 0 1 sec ...

Page 20: ... six times Ex 2KG REZERO CAL 0 Press REZERO to advance through calibration 5 Set zero point REZERO CAL SP 6 Place weight on platter from step 4 REZERO xxxxxx When calibration is complete scale shows internal count 7 Exit internal count mode TARE xx xxx Press TARE key to return to weighing mode 8 Rezero scale place weight on scale to test calibration REZERO 6 6 Span Enable Switch Check This Mode Is...

Page 21: ...V size C battery Alkaline or rechargeable batteries may be used There is a built in charging circuit controlled by a jumper JP 2 which is located on the main board near the power connector The jumper must be set for the type of battery being used and is normally set for alkaline See figure below for switch position FIGURE 1 D I S C O N T I N U E D ...

Page 22: ...llowing mounting options desk top wall mount DI pole kit 7 4 RS 232C Interface RS 232C serial data output Mini DIN 8 PIN The data transaction method can be set for continuous output manual by key entry or command Inquiry from an external device Protocol Baud Rate 1200 2400 4800 9600 19200 Start Bit 1 bit Stop Bit 1 2 bit Data Bit 7 8 bit Parity Bit Even Odd None Text Command CR 0DH The end of data...

Page 23: ...ce requirements or a Vcc voltage 5V DC can be used on PIN 8 as an external voltage 7 2 2 Spec Setting SPEC 52 Bit 0 Set point control 0 Disable 1 Enable SPEC 52 Bit 1 Set point output 0 Active high 1 Active low 7 2 3 How Set Points Work _ _ The state where no set point is reached When set point 1 is reached the relay at set point 1 will be on eg 1 kg When set point 2 is reached the relays at set p...

Page 24: ... TXD TXD 3 4 RXD GND 5 8 GND DTR 4 DSR 6 RTS 7 CTS 8 25 PIN D SUB FEMALE 8 PIN MINI DIN MALE PC DI 28 Signal Pin Pin Signal RXD 3 2 TXD TXD 2 4 RXD GND 7 8 GND RTS 4 CTS 5 DSR 6 DTR 20 7 4 2 RS232C Configuration Baud rate 1200 2400 4800 9600 19200 bps Data bit 7 bits or 8 bits Parity bit None Odd Even Stop bit 1 bit or 2 bits D I S C O N T I N U E D ...

Page 25: ... 0 Without stable flag 1 With stable flag SPEC 54 Bit 0 1 and 2 RS232C baud rate 0 0 0 1200 0 1 0 4800 1 0 0 19200 0 0 1 2400 0 1 1 9600 SPEC 54 Bit 3 RS232C output 0 Disable 1 Enable SPEC 55 Bit 0 RS232C data length 0 7 bit 1 8 bit SPEC 55 Bit 1 RS232C stop bit 0 1 bit 1 2 bits SPEC 55 Bit 2 and 3 RS232C parity bit 0 0 No parity 0 1 Odd 1 0 Even SPEC 59 Bit 0 and 1 RS232C time out error 0 0 1 sec...

Page 26: ...ght 1 20 lb Tare Weight 0 45lb a Header Send As Code STX SOH CR 0 0 1 2 3 0 CR 4 0 0 0 4 5 0 CR LF a Header Send As Text STX SOH CR N E T W E I G H T 0 1 2 3 0 CR T A R E W E I G H T 0 0 0 4 5 0 CR LF NOTE Net Weight and Tare Weight excluding a sign are transmitted shifting to the right When it is minus data 0x2D or plus data 0x30 net and tare weight data are transmitted setting 2DH or 30H into th...

Page 27: ...andshaking or no handshaking protocol iii Command Send data when ACK code is received from remote system using handshaking or no handshaking protocol i Stream method SPEC 59 Bit 2 is 0 This method will sending the data immediately PC DI 28 ii Manual method SPEC 59 Bit 2 is 1 No handshaking SEPC 52 bit 3 is 0 Press key to send data PC DI 28 TEXT TEXT D I S C O N T I N U E D ...

Page 28: ...ed With handshaking SPEC 52 bit 3 is 1 Press key to send data PC DP 122 DI 28 iii Command Method SPEC 59 Bit 3 is 1 No handshaking SPEC 52 bit 3 is 0 PC DI 28 ACK DC1 ACK NO RESP DC3 TEXT ACK NO RESP DC3 EOT CAN NAK Normal end Response time out Error Error DC1 D I S C O N T I N U E D ...

Page 29: ...n error Weight unstable after time out DC1 ACK NO RESP DC3 TEXT ACK NO RESP DC3 EOT CAN NAK Normal end Response time out Error Error ENQ Options continued With handshaking SPEC 52 bit 3 is 1 PC DP 122 DI 28 D I S C O N T I N U E D ...

Page 30: ...me caution should be used so that there is no possibility of water penetration into the scale electrical or mechanical sections A damp cloth or sponge is suggested NEVER USE ACETONE MEK OR SIMILAR SOLVENTS ON THE PLASTIC HOUSING AS THEY WILL ETCH THESE SURFACES For grease or other difficult spots a chlorothane or naphtha based cleaner may be used Never use any solvents on the front or rear panels ...

Page 31: ...able weights available to him it is suggested that the customer call their authorized DIGI dealer 8 2 Service Repair No service or repair should be attempted except by qualified personnel and not until it has been positively determined that the weighing scale requires such service All service should be done in a clean dry dust proof area 8 3 Load Cell Wiring Connector Amphenol 14 Pin 57 Series Cab...

Page 32: ...misuse neglect alteration improper installation improper repair or improper testing RLWS shall be the sole judge of all alleged non conformities Such equipment has not been modified altered or changed by any person other than RLWS or its duly authorized repair agents RLWS will have a reasonable time to repair or replace the defective equipment Buyer is responsible for shipping charges both ways In...

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