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DPI-500

Technical Manual

Appendix C: Specifications

Analog Specifications

Full Scale Input Signal

30 mV, including dead load

Minimum Sensitivity

0.4 V / grad

Input Impedance

30 M

Ω

, typical

Internal Resolution

260,000 counts

Display Resolution

30,000 dd

Measurement Rate

10 Meas / sec, nominal

System Linearity

Within 0.02% of FS

Calibration Method

Software Calibration

Exitation Voltage

+10 VDC, 8 x 350

Ω

load cells

Digital Specifications

Microcomputer

Intel 80C32

Program Memory

32K x 8

EEPROM

64 x 16

Digital Filtering

selectable from software

Serial Communications

Serial Port

Full Duplex, 1200, 2400, 4800, 9600 Baud
8 data bits, no parity
7 data bits, even parity
7 data bits, odd parity

User Interface

Display

0.56" (14 mm) 7-segment, LED, 6 digit

Additional Markings

Net, Gross, Stable, Tare, lb, kg, Zero

Keyboard

5-key flat membrane panel

Power

AC Adaptor

12 VDC @ 650 mA

Power Consumption

200 mA + 30 mA per LC

Environmental

Operating Temperature

-10° to 40° C

Storage Temperature

-25° to 70° C

Mechanical

Dimensions

5.5" x 8.9" x 2.8" (140mm x 225mm x 72mm)

Содержание DPI-500

Страница 1: ...ION YAMATOTECHCORPORATION P O Box 15070 112 19425 Langley By Pass Colorado Springs CO 80935 5070 Surrey B C V3S 6K1 U S A Canada Phone 719 591 1500 Fax 719 591 1045 Phone 604 533 2338 Fax 604 533 0827 OM90 4 01 OPERATING AND SETUP INSTRUCTIONS ...

Страница 2: ...ns 13 Appendix B Error Codes 14 Appendix C Specifications 15 Figure 1 CPU Board Layout 3 Figure 2 Front Panel 4 Figure 3 System Keyword Setup Mode Menu 4 Figure 4 User Keyword Setup Mode Menu 5 Figure 5 Connection to PC 9 Figure 6 Serial Data Format for Continuous Mode 10 Figure 7 Serial Data Format for Demand Mode 10 Figure 8 Print Ticket 11 Figure 9 Connection to Printer 11 Table 1 Span Gain Tab...

Страница 3: ...has two RS 232C communication modes full duplex and Gross Net Tare Place the indicator in full duplex mode for communicating with a computer or a remote display The unit can transmit on demand or continuously Place the indicator in Gross Net Tare mode for connecting directly to a printer A crude layout of the DPI 500 circuit board is shown in Figure 1 This layout shows the major compo nents as wel...

Страница 4: ...ff Do not place the shunt block across both pins of JP2 2 While holding down the lb kg key turn the power back on SET Figure 2 Front Panel F1 Grads F2 Span Gain F3 Zero Band F4 Zero Range F5 Mot Band F6 Dig Filter F7 Ovld Limit F8 Calib Unit F9 Disp Div F10 Dec Pt F16 Zero Cal F17 Span Cal F18 Cal View F19 Key Zero F19 Key span 500 1000 1500 2000 2500 3000 4000 5000 6000 8000 10000 12000 20000 300...

Страница 5: ...the front keypad directional keys as shown in Figure 2 on page 4 to change the displayed value to the proper zerocalibrationvalue 4 After setting the value press the NET GROSS key to save the value 5 The display will momentarily show E CAL 0 and then return to keyword F19 To Key in the Span Calibration Value Please note that this procedure is intended for emergency use only in the case of nonvolat...

Страница 6: ...nput these calibration values at keywords F19 and F20 This eliminates the use of using test weights to recalibrate the weighing system To Set the Zero Point 1 If the DPI 500 is not in the System Keyword Setup Mode enter it following the procedure on the top of page 4 2 Once in this mode scroll to keyword F16 please refer to Figure 3 on page 4 3 At F16 scroll down once using the ZERO key The displa...

Страница 7: ... 4 After the value is set press the NET GROSS key to save the value 5 If the procedure was a success the display will show EndC1 momentarily and then revert to F 17 Please record the calibration value at this time for future use 6 If the calibration was not successful an error message will appear on the display Take the shown action to correct the error and then recalibrate the system Err0 The cal...

Страница 8: ...the Initial Span Gain Value 1 Determine the number of desired external graduations and choose the corresponding value under the number closest to your full scale input range in mV 2 Enter the System Keyword Setup Mode and save this number at keyword F2 3 Perform the calibration procedure If the calibration is unsuccessful or you wish to view the internalcounts completethenextprocedure To View the ...

Страница 9: ...ble RS 232 terminal There are two modes of operation which can be changed via user keyword A6 Full Duplex Mode and Gross Net Tare Print Mode Full Duplex Mode The Full Duplex Mode provides both Continuous and Demand serial transmission The Continu ous Mode is used to interface computers scoreboards and other remote devices requir ing constant data updates Transmission occurs at the end of each disp...

Страница 10: ...ure 6 Serial Data Format for Continuous Mode STX POL xxxxx xx SP LB KG SP GR NT CR LF Start Transmission Polarity SP positive negative Weight Data Units lb pound kg kilogram Gross Net GR Gross N T Net Carriage Return Line Feed Space Space Figure 7 Serial Data Format for Demand Mode 1 Recognized host commands P Print Z Zero the scale T Tare the scale G Change to Gross Mode N Change to Net Mode C Ch...

Страница 11: ...oss Net Tare Print Mode is designed for use with a printer Figure 8 shows the fixed format of the print ticket For printers with limited buffers this mode supports the DTR pin hand shaking which can be wired to the indicator s RXD pin which then functions as a CTS pin This mode allows the printout of a 6 digit ID number which can be entered via the User Menu Figure 9 shows a suggested cable diagra...

Страница 12: ... value 6 If the ID number entry was a success the display will show SET and then return to keyword A8 To Enter Line Feeds 1 While in the User Keyword Setup Mode scroll to keyword A9 2 At keyword A9 scroll down once by pressing the ZERO key 3 The display will momentarily show LF followed by the current value with one flashing digit 4 Use the front keypad to change the value 5 Press the NET GROSS ke...

Страница 13: ...sspeedisontheessence Selectsthedesiredoverloadlimit AllselectionsarebasedontheunitchoseninkeywordF8 Selectstheunitsinwhichthescaleistobecalibrated Theselectedunitisalsothedefaultunitin normal weighing operation 1 lb 2 kg Determinesthedesiredweightincrements Determinesthedecimalpointposition Placesindicatorintozerocalibration Scrolldownbypressingthe ZEROkeytostartcalibration Placestheindicatorintos...

Страница 14: ... entry of a new ID No Valid only when A6is set to 1 PressingtheZEROkeytoscrolldownoncestartsthesequence Actuatesthefunctionwhichallowsentryofthedesirednumberoflinefeedstobeprintedafterthe Gross Net Tare printout Valid only when A6 is set to 1 Pressing the ZERO key to scroll downoncestartsthesequence Value 1200 2400 4800 9600 8n 7O 7E C d Press ZERO key to beginsequence 0 1 0 1 0 1 0 199999 0 99 Er...

Страница 15: ...al Specifications Microcomputer Intel80C32 ProgramMemory 32K x 8 EEPROM 64 x 16 Digital Filtering selectablefromsoftware Serial Communications Serial Port Full Duplex 1200 2400 4800 9600 Baud 8 data bits no parity 7 data bits even parity 7 data bits odd parity User Interface Display 0 56 14 mm 7 segment LED 6 digit Additional Markings Net Gross Stable Tare lb kg Zero Keyboard 5 keyflatmembranepane...

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