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Pennsylvania 7100 Series Operation Manual

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Pennsylvania Scale Company
Model 71/72/7300 Series Scales
Operation
&
Calibration
Manual
Pennsylvania Scale Company
1042 New Holland Avenue
Lancaster PA 17601
For online interactive tech support or more information on Pennsylvania
Scale products, visit our website at
www.pascale.com
Part Number UM-12199
Version 4.02
Revised January 31, 2003
1

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  • Page 1 Operation & Calibration Manual Pennsylvania Scale Company 1042 New Holland Avenue Lancaster PA 17601 For online interactive tech support or more information on Pennsylvania Scale products, visit our website at www.pascale.com Part Number UM-12199 Version 4.02 Revised January 31, 2003...

  • Page 2: Table Of Contents

    71/72/7300 SERIES SCALES OPERATIONS MANUAL - SECTION 1 CONTENTS INTRODUCTION INSTALLATION AND SET-UP DIAGNOSTICS OPERATION OPERATIONAL FEATURES 6 EXTERNAL CONNECTORS DISPLAYS AND INDICATORS PUSH-BUTTON FUNCTIONS WEIGHING WEIGHING WITHOUT TARE WEIGHING WITH TARE BI-DIRECTIONAL SERIAL ASCII INTERFACE INTRODUCTION COMMUNICATION CONNECTOR PIN-OUT TYPICAL CABLE WIRING COMMAND FORMATS SCALE COMMANDS...
  • Page 3 71/72/7300 SERIES SCALES PROGRAMMING/CALIBRATION SECTION 2 CONTENTS (cont’d.) INTRODUCTION 7X00 SERIES CALIBRATION DATA ENTRY EXAMPLE 7X00 CALIBRATION PROCEDURE 22 CALIBRATION STEPS BUILDING A FORMATTED PRINT 28 FORMATTED PRINT CODES COMMAND FORMATS RS-232 SCALE COMMANDS RS-232 COMMUNICATION CONFIGURATION RS-232 PRINT CODES RS-232 SERIAL INTERFACE CALIBRATION COMMANDS CALIBRATION EXAMPLE...

  • Page 4: Introduction

    Scale with internal display and zero, unit, and print push-buttons. The Pennsylvania Scale Company 7X00 Series products have been designed to be simple and easy to operate. But they also have many features that make them extremely versatile to use such as: Ø...

  • Page 5: Installation And Set-Up

    INSTALLATION AND SET-UP INSTRUCTIONS The 7X00 Series Scale has been packaged to ensure safe, damage-free arrival. Please use reasonable care when removing the unit from the shipping carton, and retain the original packaging materials in case reshipment is required. NOTE: TO PROTECT THE WARRANTY, FILL OUT AND RETURN THE WARRANTY CARD AND THE SCALE CONDITION REPORT.

  • Page 6: Diagnostics

    DISPLAY DIAGNOSTIC FUNCTION 9.9.9.9.9.9. EPROM Checksum, light all LEDS 8.8.8.8.8.8. RAM check 7.7.7.7.7.7. No test 6.6.6.6.6.6. Check switches not shorted 5.5.5.5.5.5. No Test 4.4.4.4.4.4. Check load cell excitation voltage Analog verify (checks output from analog -digital) 3.3.3.3.3.3. 2.2.2.2.2.2. Load CFG EEPROM, test virgin, checksum, initialize on error 1.1.1.1.1.1.

  • Page 7: Operation

    OPERATION OPERATIONAL FEATURES The following features are available on all 7X00 Series Scales. Overload - If the weight exceeds 105% of full capacity, the scale will read out "OLOLOL", meaning overload. Underload - If the weight is below -3% of full capacity, the scale will read out "ULULUL", meaning system underload.

  • Page 8: Push-Button Functions

    PUSH-BUTTON FUNCTIONS (Refer to Fig. 1 below.) A standard feature on the Model 7300, buttons are also available on the 7100 and 7200 with the optional remote display with push-buttons. ZERO ON/OFF Push-button - Sets meter to zero. It also functions as a CONTINUE switch during the self-diagnostic check (i.e., if the meter stops at a diagnostic check number, the switch may be pressed to resume the countdown).

  • Page 9: Weighing

    WEIGHING The following instructions are for the Model 7300 with or without a remote display option or 7100/7200 Scales with a remote display option with push-buttons. (The 7100 and 7200 scales without the remote display with push buttons require RS-232 communications to operate.

  • Page 10: Bi-Directional Serial Ascii Interface

    BI-DIRECTIONAL SERIAL ASCII INTERFACE INTRODUCTION The 7X00 Scale Series Serial ASCII Interface is an RS-232C, TTL-compatible, asynchronous serial interface capable of bi-directional transmission of scale data. This interface features programmable baud rates, word lengths, stop bits, parity, address number and a formatted print. COMMUNICATION CAPABILITIES The interface provides three basic types of communication with the Model 7X00 Series:...

  • Page 11: Typical Cable Wiring

    RS-232 PIN ASSIGNMENTS and IMPLEMENTED FUNCTIONS Connection to the Serial Port is made via a DB-9 female connector found in the access area on the bottom of the scale. EIA CODE FUNCTION DIRECTION Transmit Data Output Receive Data Input Signal Ground Data-Set Ready (DSR) Output Clear to Send (CTS)

  • Page 12: Command Formats

    COMMAND FORMATS The Model 7X00 Series can be controlled from an external device (such as a computer or terminal) by various commands, each three letters long, which represent related English phrases or words. For example, to tell the scale to zero, type ZRO followed by a carriage return.

  • Page 13: Scale Commands

    MODEL 7X00 SERIES RS-232 SCALE COMMANDS General Commands Acquire Tare Weight Initiate self-diagnostics CHecK LoCK out keypad Power ON Power OFf RESet, clears tare weight UnloCK keypad UNits Primary UNits Secondary ZeRO scale - Commands Which Enter Information into the Unit ITW [ FLOATING POINT NUMBER ] Input Tare Weight Commands Which Request Information...
  • Page 14 Calibrate and Configure Commands CALibrate - Same as pressing SW4 button. ConFigure Communication - To set baud rate etc. ConFigure Print codes - To enter print codes. CaLibration End - To save calibration data. CaLibrate Primary - To set-up primary calibra- tion data.

  • Page 15: Sample Computer Program

    IBM PC or compatible using BASICA, MBASIC or QuickBASIC. 10 ' Terminal Program written for BASIC Programming Language 20 ' Provided by Pennsylvania Scale Company 30 ' 40 DEFINT A-Z 50 FALSE = 0: TRUE = NOT (FALSE) 60 KEY OFF: CLS : LOCATE 25, 1 70 PRINT SPACE$(20);...
  • Page 16 NOTES: Ø Line 90 opens the serial communications port, using 300 baud, Odd parity, 7 data bits, and 1 stop bit. These represent the default settings for the scale, other entries may be used if the scale settings have been changed. Valid entries for baud rate are 300, 600, 2400, 4800, 9600, or 19200.

  • Page 17: Error Message List

    ERROR MESSAGE LIST During Diagnostics Err1.CA Scale Calibration Err2.00 to Err2.63 EEPROM Write Failure Err2.rS Serial Interface Setup Err3.Hd Deadload too High Err3.nS No Sense Line Connected Err3.-d Negative Deadload Err4.Sh Load Cell Excitation Shorted Err6.-1 to Err6.-4 Switch SW1-SW4 Shorted Err8.00 to Err8.FF RAM Test Error Err9.CS...

  • Page 18: Introduction

    RS-232 Interface. The scale employs a digital calibration technique that makes it very versatile when matching the Scale to the require- ments of the application at hand. This manual covers calibration and programming of the following Pennsylvania products: Model Description 7100 Smartbase with no internal display or push-buttons.

  • Page 19: 7X00 Series Calibration

    7X00 SERIES CALIBRATION The following calibration data entry applies to the Model 7300 or a 7200 and 7100 with a remote display with push-buttons interfaced. For calibration of models without push-buttons, please refer to the RS-232 Interface command section. Before attempting to calibrate the scale, a thorough understanding of the method of data entry is required.
  • Page 20 FUNCTION BUTTONS (cont’d.) ADV (Advance) The advance switch multiplies any number keyed into the scale by 10, (The number is shifted one digit to the left each time the button is pressed). If this switch is pressed when the display shows "0", the digit will not shift. If it is pressed when the display is filled, the display will be cleared and the input procedure can be restarted.

  • Page 21: Data Entry Example

    DATA ENTRY EXAMPLE The following example describes the switch-closure sequence needed to enter the number 320.0. While the display is alternately flashing the calibration step number and the data stored, press the INC button to start the data input sequence. The display will stop flashing and show "0".

  • Page 22: 7X00 Calibration Procedure

    7x00 CALIBRATION PROCEDURE The calibration of the 7100, 7200 and 7300 scales is divided into six major categories. The entry point for these categories are the calibration steps that are evenly divisible by ten. STEP DESCRIPTION Cal 20 Entry point (20) = Manual CAL (input operational features) (30)

  • Page 23: Calibration Procedure

    CALIBRATION PROCEDURE To begin calibration: Ø First remove the weighing platform from the scale. The calibration switch access plate is located at the top, front, center of the scale. Ø Set the scale on it's side to reveal the sealing screw on the bottom of the scale that holds the calibration access plate in place.

  • Page 24: Calibration Steps

    CALIBRATION STEPS NOTE: During the calibration procedure each calibration step will be printed to any device interfaced to the RS-232 port. (Refer to page 23 for a sample print out.) STEP DESCRIPTION (Press ENTER after each entry) CAL 20 Manual Calibration entry point CAP 21 Full capacity - Input full capacity of scale in the primary weighing unit.
  • Page 25 CALIBRATION STEPS (cont’d.) Stt 28 Stable threshold, enter as a percent of one display resolution (1.00*) CAL 30 Secondary Weighing Unit 2Un 31 Select secondary weighing unit using the INC button. 1 = lb 5 = lb t 9 = c 13 = tons 2 = kg 6 = gr...
  • Page 26 CALIBRATION STEPS (cont’d.) WARNING!!! When using a substitute weight for ½ and full capacity, you must use weights which meet the specifications in either 1 or 2 below, or the scale may not calibrate properly. Two weights (one for 1/2 capacity, one for full capacity) that are greater than 25% of full capacity and differ by at least 50% of full capacity.
  • Page 27 CALIBRATION STEPS (cont’d.) SPb 63 STOP BITS: Select the stop bits from the table below using the SCROLL (INC) push-button to view the options; press ENTER when you reach the required stop bits. 1 stop bit* 2 stop bits PAr 64 PARITY: Select the parity from the table below using the SCROLL (INC) push-button to view the options;...

  • Page 28: Building A Formatted Print

    CALIBRATION STEPS (cont’d.) CAL 70 Setting of time and date (Steps 71 -73 will only come up if the Time and Date option is installed.) StF 71 Select type of clock. 0 = 24 hour clock 1 = 12 hour clock, currently AM 2 = 12 hour clock, currently PM td1 72 Enter the current time as HHMMSS.
  • Page 29 BUILDING A FORMATTED PRINT (cont’d.) To build a formatted print, refer to "Formatted Print Codes" following this section. Select the desired code for the current slot and key it in using the INC and ADV buttons. Press ENTER to move to the next print slot. (If a print code is entered that is not legal, the message "Illegal Print Code"...

  • Page 30: Formatted Print Codes

    See Page 13 for a list and definition of the characters sent.) 53 = ABO Checksum (May be used in building a continuous output compatible with other Pennsylvania Scales.) 54 = Select Leading Zeros 59 = No Operation...
  • Page 31 FORMATTED PRINT CODES (cont’d.) Print Special ASCII Characters Formatted Print Codes 60 = Print an ASCII space (SP) 61 = Print an ASCII horizontal tab (HT) 62 = Print an ASCII line-feed (LF) 63 = Print an ASCII start of header (SOH) 64 = Print an ASCII carriage return (CR) 65 = Print an ASCII carriage return and line feed (CR LF) 66 = Print an ASCII form-feed (FF)

  • Page 32: Command Formats

    COMMAND FORMATS All Model 7100, 7200 and 7300 scales may be calibrated and programmed through the RS-232 Interface using a terminal or computer. These scales are controlled by various commands, each three letters long, that represent related English phrases or words. When the scale receives command strings, they are first placed in a 125-character buffer.

  • Page 33: Rs-232 Scale Commands

    MODEL 7X00 SERIES RS-232 SCALE COMMANDS General Commands Acquire Tare Weight - Same as ZRO Initiate self-diagnostics CHecK LoCK out keypad Power ON Power OFf RESet, clears tare weight UnloCK keypad UNits Primary UNits Secondary ZeRO scale - Same as ATW Commands Which Enter Information into the Unit ITW [ FLOATING POINT NUMBER ] Input Tare Weight...
  • Page 34 MODEL 7X00 SERIES RS-232 SCALE COMMANDS (cont’d.) Calibrate and Configure Commands (* requires SW4 to be pressed) CAL* CALibrate - Scale will follow push button cal. ConFigure Communication - To set baud rate etc. ConFigure Print codes - To enter print formatting. CaLibration End - To save calibration data.
  • Page 35 CONFIGURATION OF RS-232 COMMUNICATION PARAMETERS The unit leaves the factory with the following default communication settings : BAUD WORD LENGTH 7 bits STOP BITS PARITY These settings may be changed using the local or remote display keyboard as described above, or RS-232 interface commands. If the RS-232 interface is used, initial communication with the users computer or terminal must be established using the above set- tings.

  • Page 36: Rs-232 Print Codes

    CONFIGURATION OF RS-232 PRINT CODES These print code settings may be changed using either the local or remote display push-buttons, or through RS-232 Interface commands. When communication with the unit has been established, the CFP (ConFigure Print code) command may be used as follows: COMMAND FORMAT DESCRIPTION...
  • Page 37 CALIBRATION USING RS-232 SERIAL INTERFACE (cont’d) To begin calibration, enter any of the calibration commands. The Model 7X00 Series product will prompt to the terminal one of the following messages: RESPONSE TO TERMINAL (parenthesis indicate scale display message): "Push CALIBRATION SELECT Switch" Push the Calibrate Button now.

  • Page 38: Calibration Commands

    CALIBRATION COMMANDS NOTE: Spaces must separate the command and settings. And each command string must be terminated with a carriage return. CLP - CaLibration Primary COMMAND: CLP 10.0 0.002 5.0 1 Enters the Calibration Factors for the Primary weighing mode. The example shown selects: 10.0 = Full scale Capacity 5.0 = Zero Range...
  • Page 39 Calibration points will default to one half, and one, times the full scale primary weighing range. RESPONSE TO TERMINAL (parenthesis indicate local display message): "Internal A/D Calibration.- Please Wait (------) Place the following weights on the platform, press ENTER (either on terminal or scale) after each: 0.000 lb* (LoAd 0.000)

  • Page 40: Calibration Example

    CALIBRATION EXAMPLE Using the example commands from page 22, a typical sequence of calibration commands might be: CLP 10.0 0.002 5.0 1 Enters the Primary Calibration Factors CLU 0 Selects print while Unstable for non-NTEP CLW 3 Enters the Weight Calibration Mode Ends the calibration process, stores results.
  • Page 41 USING THE "CAL" COMMAND The "CAL" command may also be used to calibrate the scale. This command will cause the scale to enter the same calibration routine as the push button calibration process. After the "CAL" command is sent to the scale it will prompt the operator to press the calibration select key (SW4).

  • Page 42: Cal" Command

    USING THE "CAL" COMMAND (cont’d.) Configuration Step (60)? 60* 61 Baud Rate ( 300)? 0 {Selections on p. 8 } 62 Parity ( nonE)? 0 {0 = none, 1 = odd, 2 = even} 63 Word Length (8 bit)? 1 {0 = 7 bit, 1 = 8 bit} 64 Stop Bit ( 1)? 1 {1 or 2}...

This manual is also suitable for:

7300 series7200 series

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