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Avery Weigh-Tronix DWS PC-905 User Instructions
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Avery Weigh-Tronix DWS PC-905 User Instructions

Counting scale
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PC-905 Counting Scale
PC-905
User Instructions
ENGLISH
43002-0016 Issue AB
June 2008

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Summary of Contents for Avery Weigh-Tronix DWS PC-905

  • Page 1 PC-905 Counting Scale PC-905 User Instructions ENGLISH 43002-0016 Issue AB June 2008...
  • Page 2 © Avery Weigh-Tronix LLC, 2006. All rights reserved. The information contained herin is the property of Avery Weigh-Tronix LLC and is supplied without liability for errors or omissions. No part may be reproduced or used except as authorised by contract or other written permission.
  • Page 3 Contents page Contents ......................... 3 Introduction........................5 Keyboard and Display ....................6 Scale Setup and Operation .................... 8 Battery Power Option ....................9 Operation as a Scale ....................10 Operation as a Counting Scale ................11 Counting Using a Known Piece Weight..............12 Counting Using Bulk Sampling ................
  • Page 4 PC-905 Counting Scale User Instructions...
  • Page 5 Introduction Contents This manual tells you how to operate the PC-905 high precision counting scale. You can configure your scale for different options and sampling methods. See the PC-905 Service Manual for details on configuration and calibration. This scale also has an RS-232 I/O channel for communication with appropriate remote devices.
  • Page 6 Keyboard and Display Keyboard and Display Figure shows the front panel of the PC-905. This is made up of the keyboard and display. Figure 2.1 PC-905 Front Panel The numeric keypad on the right side of the front panel has two function keys: •...
  • Page 7 There are three keys to the right of the display: • SAMPLE Used to select a sample size and to initiate the calculation of sample piece weight. This key also functions as an ON/STANDBY key for battery powered scales. Press the key to start the scale.
  • Page 8 Scale Setup and Operation Scale Setup and Operation This section of the manual covers getting your scale ready to work and operating the scale. This section is divided into the following: • 3.1 - Unpacking the Scale (page 8) • 3.2 - Installing the Scale (page 8) •...
  • Page 9 3.3 Battery Power Option Battery Power Option The PC-905 has an internal and an external battery option. The battery can be recharged in place by connecting the transformer to a power source and to the scale. The battery will recharge while the scale is being powered by the transformer.
  • Page 10 Scale Setup and Operation Operation as a Scale The PC-905 can be used as a bench scale or as a counting scale. The annunciators indicate when you are in the weigh mode or count mode and when the unit is configured for pounds, kilograms, grams, or ounces. While in weight mode, press the UNITS key to change the unit of measure.
  • Page 11 When you press the SAMPLE key the scale performs an auto-zero or tare. A counting scale needs a minimum amount of weight to calculate counts with accuracy. Avery Weigh-Tronix recommends the sample weight be a minimum of 0.04% of scale capacity for 99% accuracy. The table below shows the minimum sample weights recommended to guarantee the accuracies listed.
  • Page 12 Scale Setup and Operation Counting Using a Known Piece Weight Sampling is just one way to get a piece weight and to count items. You can also key in a known piece weight on the numeric keypad and press the PIECE WEIGHT key.
  • Page 13 3.7 Counting Using Bulk Sampling Counting Using Bulk Sampling Bulk sampling is an automated sampling method. You place all the items to be sampled on the scale at the same time and the scale will automatically calculate the piece weight and display the count, without any further action. Follow these steps for bulk sampling.
  • Page 14 Scale Setup and Operation Counting Using Dribble Sampling Dribble sampling requires one more step than bulk sampling You can count the items to be sampled onto the scale and then press the SAMPLE key to begin the piece weight calculation. This can be handy if the items are more easily counted onto the scale one at a time versus all at once.
  • Page 15 3.9 Using Reverse Sampling for Counting, Method 1 Using Reverse Sampling for Counting, Method 1 Method 1 or 2 are chosen in the Reverse sampling occurs when you place an unknown number of items on Service Menu. See the Service the scale, determine a piece weight (by method 1 or 2), and the scale counts Manual for instructions.
  • Page 16 Scale Setup and Operation 3.10 Using Reverse Sampling for Counting, Method 2 Method 1 or 2 are chosen in the Reverse sampling, method 2, is independent of the bulk or dribble modes. It Service Menu. See the Service does not matter which of those you have enabled. Manual for instructions.
  • Page 17 3.11 Recalling a Piece Weight 3.11 Recalling a Piece Weight The PC-905 lets you view the active piece weight by using the RCL/. key. The active piece weight is one you have keyed in or one that has resulted from doing a sample. This is useful if you want to record a piece weight for a part.
  • Page 18 Scale Setup and Operation 3.16 Using the BASE Key Press the BASE key to switch between using the local scale and a remote scale base. This assumes you have a remote base option installed. If Automatic Base Switching is enabled (see the Service Manual for instructions on enabling this function), use the local base for all sampling and when the sampling is done, the remote base becomes the active scale automatically.
  • Page 19 Serial Communications This section covers the serial communications capabilities of the PC-905. In this section you will find: Default serial settings are: • 4.1 - Cable Pinouts (page 19) 9600 Baud, 8 databits, No parity, • 4.2 - Preset Print Formats (page 21) and 1 stop bit •...
  • Page 20 Serial Communications The functional pinout is as follows: DB-9F Scale Serial I/O Connector Signal Description Reserved Reserved SIG GND Reserved Reserved Reserved The scale has a remote base option. If this is installed, the connector will show up in the position shown in Figure 4.1. If the remote base is analog the connector will be a DB-9 male.
  • Page 21 4.2 Preset Print Formats Preset Print Formats Imp Printer Formats 8 Formats are available with the Imp printer selected. LEGEND: CR = carriage return LF = line feed SP = space U = units character W = net weight character C = count character T = Tare character G = gross weight character...
  • Page 22 Serial Communications Ft 4 = Displayed count or weight with identifier- In COUNT MODE, <SP> CCCCCCC<SP>PCS<CR><LF> In WEIGH MODE, I<SP>WWWW.WW<CR><LF> Ft 5 = Displayed weight with identifier and units- In COUNT MODE, <SP> CCCCCCC<SP>PCS<CR><LF> In WEIGH MODE, I<SP>WWWW.WW<SP>UU<CR><LF> Ft 6 = Net weight with units, count and piece weight- = WWWW.WW<SP>UU<CR><LF>(Net = or Gross = ) Count = CCCCCCC<CR><LF>...
  • Page 23 4.2 Preset Print Formats Ft 8 = Count only with a fixed field format- COUNT:<SP>CCCCCCC<SP>PCS<CR><LF> PC-905 Counting Scale User Instructions...
  • Page 24 Serial Communications Dymo Label Writer Setra 300 Formats PC-905 Counting Scale User Instructions...
  • Page 25 4.2 Preset Print Formats Zebra 2844 Printer Formats Time and date will appear only if the printer has this option installed. PC-905 Counting Scale User Instructions...
  • Page 26 Serial Communications PC Protocol The scale's RS-232 bidirectional communication works in a master/slave protocol. A computer or master sends a command code to the scale (slave) which will return a response to the master device or perform a scale function. Commands to the scale are in uppercase, terminated with a carriage return.
  • Page 27 4.2 Preset Print Formats Status Bytes PC-905 Counting Scale User Instructions...
  • Page 28 Serial Communications NCI Protocol Key to symbols used: <STX> Start of Text <ETX> End of Text character <LF> Line Feed character <CR> Carriage Return character <SP> Space Weight characters from display including minus sign and out- of-range characters HML... Three status bytes Units of measure (lb, kg, oz, g, etc.
  • Page 29 4.2 Preset Print Formats The NCI protocol may have three status bytes. The status bits are defined as follows: PC-905 Counting Scale User Instructions...
  • Page 30 Serial Communications Broadcast Protocol Broadcast protocol will support the use of the RD-4100, RD-6100 and Evolution series indicators as remote displays. The broadcast protocol will output this display string: G<SP>00000<SP>lb<CR><LF> PC-905 Counting Scale User Instructions...
  • Page 31 Error Messages The error messages you might see on the display are shown below. Error message Error condition no CAL Scale has not yet been calibrated Lo bAt Low Battery voltage SPL Err - Abort Sampling error, aborting process. Use next available sample size.
  • Page 32 Specifications Specifications Capacity (lb) Available Countby Values 5,000d NTEP 25,000d 50,000d 100,000d (Default) .002 .001 .0005 .0002 .0001 .005 .002 .001 .0005 .0002 .005 .002 .001 .0005 .005 .002 .001 Capacity (kg) Available Countby Values 5,000d NTEP 25,000d 50,000d 100,000d (Default) .001 .0005...
  • Page 33 Internal Resolution: 1:2,000,000 Dimensions: Weighing Platform: 12.6” X 14.08”, 25, 50 & 100 lb capacity 8” diameter, 10 lb capacity Display Assembly: 6.31” x 12.86” Overall Dimensions: 17.50” x 14.08” x 4.25-5.40” Construction: Diecast aluminum base and load bridge, Stainless Steel Weight Platter, ABS plastic display assembly Display: Large 0.5”...
  • Page 34 Specifications PC-905 Counting Scale User Instructions...
  • Page 36 Avery Weigh-Tronix USA 1000 Armstrong Dr. Fairmont MN 56031 USA Tel: 507-238-4461 Fax: 507-238-4195 Email: industrial@weigh-tronix.com www.wtxweb.com Avery Weigh-Tronix UK Foundry Lane, Smethwick, West Midlands, England B66 2LP Tel: +44 (0)870 903 4343 Fax: +44 (0)121 224 8183 Email: info@awtxglobal.com...

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