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Increase the Number of Scans

MS-850 Raster Scanner User’s Manual

1-13

1–

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art

Step 12 Increase the Number of Scans

Where possible, you can increase the number of scans a label receives by:

•

Increasing label height

•

Decreasing label length

•

Increasing scan rate (spinning mirror speed)

•

Slowing label speed

•

Reducing raster height (and raster arc)

See the formulas described in

Appendix E — “Formulas for Number of Decodes.”

Summary of Contents for MS-850

Page 1: ...MS 850 Raster Scanner User s Manual P N 83 000850 Rev H...

Page 2: ...ntability of alleged product defects Products that are returned for warranty examination and that are found to be non warrantable are chargeable and are returned freight collect A copy of a purchase o...

Page 3: ...Height and Sweep Rate 1 9 Step 9 Test Decode Rate with Static Label 1 10 Step 10 Mount Scanner 1 11 Step 11 Test Decode Rate with Moving Label 1 12 Step 12 Increase the Number of Scans 1 13 Menu Confi...

Page 4: ...ations A 5 Appendix C ASCII Table A 9 Appendix D Position Object Detector A 10 Appendix E Formulas for Number of Decodes A 11 Appendix F Transferring Files A 14 Appendix G Operational Tips A 16 Append...

Page 5: ...tep by step instructions for quick starting your MS 850 scanner with specific go to references to other chapters and appendices Chapter 2 provides instructions for configuring the MS 850 scanner by ES...

Page 6: ...ry to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into...

Page 7: ...A X CL A S S II L A S ER PR O D UC T L A S E R S T R A H L U N G N IC H T IN D E N S T R A H L B L IC K E N L A S E R K L A S S E 2 9 4 n J 3 8 u S EN 60 82 5 1 1 99 4 DIN V DE 0 83 7 Te il 1 1 9 94...

Page 8: ...hend installiert und verwendet wird kann es zu Funkst rungen kommen Es gibt jedoch keine Garantie da bei bestimmten Instal lationen keine St rungen auftreten Sie k nnen feststellen ob dieses Ger t den...

Page 9: ...t und die Person die den Einbau oder evt notwendige Optimierungen am Bar Code Scanner vornimmt mu der englischen Sprache m chtig sein und sollte fachkundigen Rat beim Hersteller oder Importeur einhole...

Page 10: ...x MS 850 Raster Scanner User s Manual...

Page 11: ...p 2 Attach Cabling 1 3 Step 3 Establish Communications 1 4 Step 4 Configure Scanner 1 5 Step 5 Position Scanner 1 6 Step 6 Consider Read Range and Scan Width 1 7 Step 7 Determine Raster Height and Swe...

Page 12: ...an Scanning System Before installing the MS 850 scanner sketch out a diagram of the scanning system showing equipment connector and cable types and cable lengths See Appendix A General Specifications...

Page 13: ...external connections Host a 25 pin D subminiature Trigger 4 pin Power 3 pin DB 25 DTE TO DB 25 DTE Connection Note See Appendix B Electrical Specifications for pinouts Power connector Trigger connecto...

Page 14: ...ort pull down menu ESP will cycle through the various baud etc combinations until communications are established look for the CONNECTED banner on your screen you interrupt the search by clicking the S...

Page 15: ...and saving those changes to the scanner For explanations of menu configuration settings see Chapter 2 Menu Configura tion Note When you save communications changes to the scanner serial port settings...

Page 16: ...aight out from the scanner in which direct reflected light from a label can distort the scanner s ability to dis tinguish bars from spaces For the MS 850 raster scanner specular reflection is avoided...

Page 17: ...mate Scan Width At The Specific Distance The Labels Will Be Passing Through Read range is the distance from the scanner in which a passing label can be read For the MS 850 read range varies from 2 to...

Page 18: ...s moving that the labels will appear and the raster sweep rate the number of passes per second up or down describing the raster image If you know raster height along with scan width read range and the...

Page 19: ...r pattern matches your requirements See Raster Controls in chapter 2 Important Note The maximum raster height will be constrained by the sweep rate you have selected See table below Raster Sweep is th...

Page 20: ...from the host terminal to launch test b Observe rate The percent or decode rate is added to the front of the data string c End the test by clicking the Stop button or the J command Note If after maki...

Page 21: ...the measurements shown below to locate centers of mounting holes and drill as specified Caution Maximum penetration depth of screws is 0 29 inch 7 37 mm for top mount or 0 15 inch 3 81 mm for bottom m...

Page 22: ...station ary label you can repeat the test with a moving label To ensure reliable scanning you need to apply a minimum of five scans to each label This means that all variables label speed raster heigh...

Page 23: ...mber of Scans Where possible you can increase the number of scans a label receives by Increasing label height Decreasing label length Increasing scan rate spinning mirror speed Slowing label speed Red...

Page 24: ...Chapter 1 Quick Start 1 14 MS 850 Raster Scanner User s Manual 1 Quickstart...

Page 25: ...ESP Easy Setup Program configuration changes can be made in the ESP menus and sent and saved to your scanner You can also send serial com mands to the scanner via the ESP s Terminal window ESP can re...

Page 26: ...d letters and the tab key to move to the desired field use arrow keys or the space bar to scroll through selections and the Enter key to accept changes Access configuration menu changes here An Untitl...

Page 27: ...s hard drive or other storage medium This is particularly useful for saving special sets of settings that you may want to recall later and use for a different application Creating a New Configuration...

Page 28: ...thout corresponding changes in linked device s can result in the loss of menu access If this should occur try ESP Auto Baud command or restore defaults Caution Defaulting the scanner will reset all st...

Page 29: ...it is saved to the scanner with the SEND NO SAVE or SEND SAVE buttons Parity Default Even Options Even Odd None Allows you to select an error detection routine in which one data bit in each character...

Page 30: ...en a label is scanned or a carriage return is entered from the aux port Data Initiated from the Aux Portt Aux Port data is passed through to the host whenever a return key is pressed at the aux port o...

Page 31: ...x Port data to the host is always sent without a pream ble or a postamble D is the only command that is accepted by the scanner from the aux port All other commands are passed through to the host Data...

Page 32: ...Chain Mode In a daisy chain application a primary scanner is linked directly to the host and succeeding scanners are linked in tandem Data from succeeding scanners is transmitted directly to the host...

Page 33: ...imary scanner checks its auxiliary port for data It waits a maximum of 20 ms If no character is received in 20 ms it sends a noread message to the host After each character received it waits up to 20...

Page 34: ...n received from the host data will not be sent to the host until the host sends an XON During the XOFF phase the host is free to carry on other chores and accept data from other devices Point to Point...

Page 35: ...protocol commands match those of the previously selected protocol User Defined is considered to be in a polled mode only if an address has been assigned The address can be any ASCII character from th...

Page 36: ...12 ms Options 0 to 65 000 ms A zero 0 setting causes an indefinite wait Allows you to set the time the scanner will wait before timing out if ACK NAK and ETX are enabled and a host response is expecte...

Page 37: ...set the value within the determined scan rate for the scanning setup so that the scanner is capable of scanning a label the required number of times Timeout in 10 ms incs Default 100 one second Corres...

Page 38: ...as all host commands that is to be entered within the brackets External Trigger Default Positive Options Positive Negative Note External Level External Edge or Serial Data Edge must be enabled for Ex...

Page 39: ...d cycle exists as long as the detec tor sees the object and ends when the object moves out of the detector s range Note Level and Edge apply to the active logic state positive or negative that exists...

Page 40: ...As Soon As Possible Causes bar code data good reads to be transmitted immediately upon a good decode End of Read Cycle Causes bar code data to be transmitted at the end of the read cycle Subsequent r...

Page 41: ...ger With Continuous Read 1 Output enabled a timeout initiates a new read cycle and allows the same label to be read again New Trigger Ends the read cycle at the occurrence of a new trigger event and i...

Page 42: ...not match the master label However if Match Code Type is disabled it outputs on any good read Match Code Default Disabled Options Disabled Enabled Sequential Wild Card When set to Enabled Wild Card o...

Page 43: ...ld cards are appended to the end of the master label labels of variable lengths can result in matches However wild cards in the beginning or center of a label e g UR NT do not allow for variable label...

Page 44: ...This pin will not work for any of the other master labels in the data base Note Master label 1 remains unchanged until the scanner decodes a label Increment or Decrement Default Increment Options Incr...

Page 45: ...Base Size is set to 1 the max imum value for Match Start Position and Match Length is 2045 If it s set to 2 the maxi mum data base size is 1022 and so on until at ten symbols the maximum per label is...

Page 46: ...ta string 6 If more than one label is within the scan beam at the same time label data may not be displayed in the order of appearance Maximum Number of Characters per Numbers of Labels Number of Labe...

Page 47: ...imes the width of the narrow bar element Quiet zone is the space at the leading and trailing ends of a label Each quiet zone can be as narrow as only five times the width of the narrow bar element whe...

Page 48: ...d Disabled Check Digit Default Disabled Options Disabled Enabled Code 39 is self checking and does not normally require a check digit However for additional data integrity a Modulus 43 check digit can...

Page 49: ...ll be accepted Code Length Default 10 Options 1 to 64 Note Fixed Code Length must be enabled for Code Length to take effect Allows you to specify the exact number of characters that the scanner will r...

Page 50: ...must be included in the code length count Code Length 2 Default 6 Options 0 to 64 even If you enter an odd number the scanner will use the next lower number If using a second label you may also specif...

Page 51: ...having the specified length UPC Status Default Disabled Options Disabled Enabled When enabled the scanner will read UPC version A and UPC version E only EAN Default Disabled Options Disabled Enabled N...

Page 52: ...nuous Read 1 Output Enabling Continuous Read 1 Output will cause Number of Labels to default to 1 Required When set to Required the UPC main and supplemental labels are considered to be one label If e...

Page 53: ...t Allows you to specify the exact number of characters that the scanner will recognize The scanner will ignore any code not having the specified length Codabar Status Default Disabled Options Disabled...

Page 54: ...abled Enabled Used to increase data integrity by ensuring that only label length will be accepted Code Length Default 10 Options 1 to 64 Note Fixed Code Length must be enabled for Code Length to take...

Page 55: ...close Application Iden tifier s in brackets and disable padding Note If an illegal Application Record format is detected then the scanner will process it as a noread and output a noread message if ena...

Page 56: ...last data field of a label Enabling or disabling padding will have no effect on these AIAG Default Disabled Options Disabled Enabled AIAG has 12 Identifiers each of which allows you to enter up to 4...

Page 57: ...ault NOREAD Options Up to seven ASCII characters except NUL Allows you to define any combination of ASCII characters except NUL up to seven characters as the noread message When enabled and if no bar...

Page 58: ...will be processed and the new string for that command will be echoed back to the host If an invalid com mand is sent to the host the scanner will echo back the current setting of that com mand For exa...

Page 59: ...mber of consecutive hits matches mismatches or noreads as configured by Output On that must occur before activating Outputs 1 2 or 3 For example if Before Output is set to 3 and Output 1 is set to Nor...

Page 60: ...cycle Noread Activates output pins when the label s data is not decoded before the end of the read cycle Preamble enable disable Default Disabled Options Disabled Enabled within any protocol Allows yo...

Page 61: ...result in the display of each decoded message on its own line Partial Output Status Default Disabled Options Disabled Enabled When enabled allows you to pre select portions of labels to be transmitted...

Page 62: ...Continuous mode continually samples 14 transitions and stores the highest value of the samples and adjusts the AGC value at the end of the scan Leading Edge mode finds the lead ing edge by looking fo...

Page 63: ...y settings to non volatile memory for power on the scanner Factory Settings applies only to Gain Adjustment and Scanner Type Caution Changing this setting can adversely affect the quality of the MS 85...

Page 64: ...the unit is configured for standard density High Density if the unit is configured for high density Options Standard Density High Density Caution Scanner Type relates to the scanner s range and is sp...

Page 65: ...oscillating up and down movement of the dashed red line representing the movement of the raster arc This arc will change dynamically in response to adjustments in the settings Note Raster sweeps are o...

Page 66: ...mize the number of scans per label use the lowest effective sweep rate required for the application Read Cycle On Off Default Disabled Options Disabled Enabled Note Read Cycle On Off will have no effe...

Page 67: ...ear in one of three formats NVRAM F Indicates a problem with factory settings call customer support NVRAM C Indicates that the user should reprogram and send a Z command Note The Customer settings mes...

Page 68: ...will be disabled Lifetime Lifetime Hours x 10 Allows you to set the target value of the Lifetime Threshold Lifetime Message Allows you to create a message that will appear whenever the threshold is re...

Page 69: ...nds 3 10 Code Type Commands 3 13 Output 3 18 Setup 3 21 Raster Setup 3 23 Diagnostics 3 24 Most of the configuration changes to the scanner that can be made in ESP menus can also be accomplished by co...

Page 70: ...sition match length wild card charac ter sequence on noread sequence on every mismatch KM Master Label Data Base Size KMnumber of master labels Kz New Master Pin Kzstatus KL Number of Labels KLnumber...

Page 71: ...sition length K Operational Command Output Format K status KX Scanner Output Status Request KX Setup KE Scans per Second KEspeed KD Analog Gain Adjust KDgain adjustment AGC sampling KP Scanner Type KP...

Page 72: ...or with the existing data for example Ka 0 or Ka4 1 0 0 All fields preceding the modified field must be included For example in Host Port to change Data Bits to Eight without changing any other field...

Page 73: ...stamble Com mands KT KV KW KX and KU are used to request the status of groups of serial commands Loss of Communications Making changes to communications parameters such as Baud Rate Parity Stop Bits L...

Page 74: ...send Ka2 Auxiliary Port Format Kymode baud rate parity stop bits data bits daisy chain status daisy chain ID Communications Status Request Format KT baud rate 0 600 3 4800 6 38 4K 1 12004 9600 7 57 6K...

Page 75: ...te the format by either choosing new parameters or concatenating unchanged data fields separate by commas User Defined Format Kf6 RES address REQ EOT STX ETX ACK NAK from host Example To select an unp...

Page 76: ...eturned by the scanner always includes the defined protocol In this example that returned data would be STX T 00000 ETX EOT User Defined Multidrop Format Kf7 RES address REQ EOT STX ETX ACK NAK Exampl...

Page 77: ...o 30 ms send KA30 Intercharacter Delay Format KBtime interval Example To change Intercharacter Delay to 30 ms send KB30 status 0 Disabled 1 Enabled preamble character s send one to four preamble chara...

Page 78: ...ase c send Kic External Trigger Level Format Kjexternal trigger level Example To change External Trigger Level to Negative send Kj0 triggering mode 0 Continuous Read 1 Continuous Read 1 Output 2 Exter...

Page 79: ...isabled 1 Enabled 2 Sequential 3 Wild Card sequential matching 0 Increment 1 Decrement match start position Default is 0 0 to 64 match length Default is 1 1 to 64 wild card character Default is Any AS...

Page 80: ...aster Pin send Kz1 Number of Labels Format KLnumber multilabel separator Example To change Number of Labels to 3 send KL3 Operations Status Request Format KV Returns status of each command in the grou...

Page 81: ...atus check digit status check digit output status code length 1 code length 2 Example To set Fixed Code Length 1 to 8 and Fixed Code Length 2 to 4 send Kr1 8 4 or Kr1 0 0 8 4 status 0 Disabled 1 Enabl...

Page 82: ...Ktstatus fixed code length status code length Example To enable Code 128 enable Fixed Code Length and set Code Length to 9 send Kt1 1 9 status 0 Disabled 1 Enabled raster sweeps before decode attempt...

Page 83: ...d padding status 0 Disabled 1 Enabled start stop match status 0 Disabled 1 Enabled start stop output status 0 Disabled 1 Enabled large intercharacter gap 0 Disabled 1 Enabled fixed code length status...

Page 84: ...fixed length status fixed length Example To enable Code 93 and fixed code length to 12 send K 1 1 12 Autodiscriminate Format P Enables all available symbology types You may individually disable enable...

Page 85: ...ogy ID status Example To enable Narrow Margins send Ko1 Background Color Format Kxbackground color Example To change background to black send Kx1 Code Type Status Request Format KW Returns status of e...

Page 86: ...ould not be changed Example To enable Laser On Off send KC1 Serial Verification Format KSserial command echo status serial command beep status control hex output Example To enable Serial Command Echo...

Page 87: ...2 Format Kwoutput on polarity pulse width before output Example To set Output 2 to Mismatch and change Pulse Width to 40 ms send Kw2 0 4 or Kw2 4 beeper status 0 On Good 1 On Noread beeper volume 0 O...

Page 88: ...tus when to output Example To set When to Output to End of Read Cycle send Kl3 1 Scanner Output Status Request Format KX Returns status of each command in the Scanner Output group output on mode 0 Mis...

Page 89: ...us to Leading Edge send KD40 1 0 Scanner Type Format KPdensity Caution Do not change the scanner density type unless instructed to do so by a Microscan representative Any number from 35 to 110 number...

Page 90: ...e the message to NOCODE send KN1 NOCODE Bad Barcode Message Format K status message Example To change the message to FAULTY send K 1 FAULTY Scanner Setup Status Request Format KU Returns status of eac...

Page 91: ...ffset of 60 send KR1 5 60 If raster setup is disabled the raster mirror will park at the top offset If both Read Cycle On Off and Laser On Off see KC are enabled at the end of a triggered read cycle t...

Page 92: ...K message Example To change the message to LO CURR K LO CURR Operating Temperature High Temperature Threshold deg C Format K degrees message Example To change the temperature to 45 and message to MAX...

Page 93: ...end K 2000 MAINT Present Operating Temperature deg C Format K degrees Read Only Send K to read Counts Format K_powerups resets Read Only Send K_ to read Powerups are the number of times the power is t...

Page 94: ...Chapter 3 Serial Configuration 3 26 MS 850 Raster Scanner User s Manual 3 Serial Config Time Since Last Reset Format K hours minutes Read Only Send K to read hours minutes 0 to 255 0 to 59...

Page 95: ...Interface 4 13 Download 4 16 Terminal Mode 4 17 The Utility menu allows you to send operational commands to the MS 850 Operational commands can be accessed by clicking the Utilities button or selectin...

Page 96: ...r Counter U Trigger Counter Reset V Good Read Counter W Good Read Counter Reset X Mismatch Counter Y Mismatch Counter Reset Trigger char Serial Trigger Character Code Type Q Enable Code 39 only P Enab...

Page 97: ...three Part Numbers b Display Boot Code Part Number a Display Application Code Part Number r Display Raster Code Part Number Interface A Reset does not save for power on Ad Default An Restore Saved Set...

Page 98: ...in relation to the scan beam or scan line if using a scan head with a moving beam This test is very useful in aligning and positioning the scanning device during installation Associated serial comman...

Page 99: ...d serial command Ce after C Cs C or Cs Note The Ce command has no immediate effect if not preceded by C Cs C or Cs Enable PDF Information Clicking the PDF Info check box will cause PDF 417 symbology d...

Page 100: ...urrent count Note All counter values will be lost if power is recycled to the scanner or the scan ner receives a reset or save command Clicking Reset for any counter will reset that counter to 0 Click...

Page 101: ...r Label is enabled If Master Label is not enabled this counter records the number of good reads This count can be requested at any time Associated serial command V Match Counter Reset Clicking Reset s...

Page 102: ...the trigger character to the scanner and initiate a read cycle The results a good read or noread message will be displayed on the blank screen below the button Note Your scanner must be in a point to...

Page 103: ...ve associated master label data for each You can access master label functions in ESP by clicking Utilities and Master Label from the pull down menus or from the settings window clicking the Utilities...

Page 104: ...ious master label numbers Associated serial commands See Send Master Label Text Send Master Label Text After you ve set the data base Size you can enter your master label data directly into the master...

Page 105: ...o store next label scanned as a specific master label send G master label For example G5 will cause the next label scanned to be entered as master label 5 Delete Master Labels You can delete any maste...

Page 106: ...nner returns three software part numbers that are dis played under Part Associated serial command Individual part numbers for Boot Application and Raster are returned when their respective commands b...

Page 107: ...ts all counters and operating parameters Note A reset will cause the numeric counters in use to loose their count record all data that you wish to save prior to sending this command Associated serial...

Page 108: ...rn the laser on continuously Note Enable Laser Scanning does not relate to Laser On Off command Associated serial command H Disable Laser Scanning Clicking Laser Off will turn the laser off This featu...

Page 109: ...pins 6 and 20 of the 25 pin host connector regardless of Master Label or Output 1 Driver status Associated serial command L1 Output 2 Clicking Output 2 activates the output between pins 8 and 21 of th...

Page 110: ...u can access Download from the Utilities menu To send application code or raster code to the scanner s flash memory click Send Code and follow the prompts to select and send your code files You will s...

Page 111: ...creating a data cap ture file When you open the Terminal window ESP inserts a Terminal menu on the menu bar as shown here Select Start Data Capture This brings up a Save dialog Create a file name and...

Page 112: ...menu when the screen is refreshed To define a space as a character Press SP twice It is displayed as a blank space in the menu when the screen is refreshed While it appears that nothing has been assig...

Page 113: ...C ASCII Table A 9 Appendix D Position Object Detector A 10 Appendix E Formulas for Number of Decodes A 11 Appendix F Transferring Files A 14 Appendix G Operational Tips A 16 Appendix H Bar Code Symbol...

Page 114: ...ner User s Manual Appendices Appendix A General Specifications Mechanical Front Back Top Bottom Height 1 76 4 5 cm Length 4 28 10 9 cm Width 3 74 9 5 cm Weight 16 oz 453 g 1 764 45 3 739 95 FRONT Trig...

Page 115: ...igh Density Standard Density Low Density 005 127 mm 1 2 to 2 75 3 05 to 6 99 cm 007 178 mm 1 2 to 3 8 3 05 to 9 65 cm 2 to 5 2 5 08 to 13 21 cm 010 254 mm 1 5 to 7 3 81 to 17 78 cm 015 381 mm 1 5 to 8...

Page 116: ...RS 232 RS 422 485 SDS DeviceNet Profibus Ethernet daisy chain auxiliary port capable Used in conjunction with an accessory protocol box Protocols Point to Point Point to Point w RTS CTS Point to Point...

Page 117: ...sis ground 2 Transmit data RS 232 out 3 Receive data RS 232 in 4 Request to send out Aux Port RS 232 5 Clear to send in Aux Port RS 232 6 Output 1 out 7 Signal ground 8 Output 2 out 9 Trigger in 10 Tr...

Page 118: ...tion CAUTION The maximum cur rent that can pass through the optoisolator is 100 mA Not Optoisolated In this second diagram you use the scanner s power to complete the circuit CAUTION The maximum cur...

Page 119: ...ollowing New Master Pin inputs can be fully isolated pulses as PNP or NPN circuits Minimum Maximum V IN HIGH VIN LOW IN HIGH I 4 5 V 4 mA 11V 12 mA I IN LOW 0V 0 mA 2 3V 2 mA Pulse Width min 48 S Wave...

Page 120: ...NPN Circuits Signal Isolated MS 850 V CC Pin 10 of host Pin 9 of host PNP Trigger Source V Signal V Non isolated MS 850 V CC Pin 18 10 to 28V Pin 10 of host Pin 9 of host PNP Trigger Source Pin 17 of...

Page 121: ...VT K 43 2B 75 4B K 107 6B k 12 0C FF L 44 2C 76 4C L 108 6C l 13 0D CR M 45 2D 77 4D M 109 6D m 14 0E SO N 46 2E 78 4E N 110 6E n 15 0F SI O 47 2F 79 4F O 111 6F o 16 10 DLE P 48 30 0 80 50 P 112 70...

Page 122: ...sent to the scanner to begin the read cycle Typically a detector is positioned so that it will detect the presence of an object before its label can be scanned An object detector is mounted in almost...

Page 123: ...ing Top Offset setting equal to Bottom Offset or symbols are presented as stop and go For single scan line ladder scanning use the following for mula 1 LH Label Height ladder formula only is a measure...

Page 124: ...moves through the scan SW Scan Width picket fence formula only is the width across the scan beam at a given distance from the scanner in which a label can be read LL Label Length picket fence formula...

Page 125: ...an DR Decode Rate is the number of decodes per second that a given symbol receives as derived from a sta tionary scan test Example Angled Picket Fence Calculation The number of complete scans for angl...

Page 126: ...t menu page Note Clicking OK on these menu pages will only update the items in the Current Settings window From within the SEND RECV box click SEND NO SAVE to initialize settings and reset counters on...

Page 127: ...d a Ad serial command Defaulting by New Close and save your current file Select New in the File pull down menu The resulting File will have your original factory default settings Give it a new name an...

Page 128: ...eck the label for readability by doing a decode rate test If there is any question about the label s readability contact your Microscan representative After changing any parameter that might affect de...

Page 129: ...Both UPC and EAN can have two or five digit supplemental bar code data following the normal code Code 128 A very high density alphanumeric symbology Will encode all 128 ASCII characters it is continu...

Page 130: ...are connected to a common ground a ground loop potential and the possibility of noise interference exists Therefore cable lengths are limited to a max imum of 50 feet 19 7 m Despite being the most lim...

Page 131: ...by a STX start of text character and then the data Next it transmits an ETX end of text character and an LRC longitudinal redundancy check character If the concentrator or controller receives the dat...

Page 132: ...s own select address 1F hex and an ACK acknowledge The concentrator then transmits an STX start of text the data in this case a T an ETX end of text and an LRC character The scanner replies by transmi...

Page 133: ...2 S 53 04 22 23 29 T 54 U 55 05 24 25 30 V 56 W 57 06 26 27 31 X 58 Y 59 07 28 29 32 Z 5A 5B 08 2A 2B 33 5C 5D 09 2C 2D 34 5E _ 5F 10 2E 2F 35 60 a 61 11 0 30 1 31 36 b 62 c 63 12 2 32 3 33 37 d 64 e...

Page 134: ...hen potential differences exist between power outlet grounds signal and chassis grounds can be isolated from each other inside the scanner by Microscan techni cians Noise Interference Noise interferen...

Page 135: ...one through menu selection or with serial commands Connector Physical device plug or socket on unit or cable to provide in out connectivity for various circuits and pins Counter Memory space provided...

Page 136: ...le RAM NOVRAM Random Access Memory that is available on power on that is after power to the unit has been recycled Noread A non read A condition that occurs when the scanner is set up to decode labels...

Page 137: ...ion by operational command ROM Read Only Memory Memory that cannot be changed Scanner A scanning device that is comprised of a scan head and a decoder inte grated in one package Scan Rate SR The numbe...

Page 138: ...ation around the centerline of the scan beam Timeout A user selected period of time that ends a scanner s read cycle Tracking Parameter of analog to digital converter that affects the accuracy to the...

Page 139: ...Konformit tszeichen x Character Timing 2 12 Check Digit 2 24 2 26 2 29 Checksum 4 12 Codabar 2 29 3 15 Code 128 2 29 3 14 Code 39 2 24 3 13 Code 93 2 32 3 16 Code Length 2 25 2 27 2 29 2 30 2 32 Code...

Page 140: ...und Loops A 22 Grounding A 22 H Half Duplex Mode 2 7 High Density 2 40 Host 1 3 Host Connector 25 pin A 5 Host Port 3 6 I I 2 of 5 3 13 Increment or Decrement 2 20 Initializing Serial Configuration Co...

Page 141: ...1 13 O Object Detector A 10 Operating Temperature 3 24 3 25 Operational Tips A 16 Operations 2 13 Operations Commands 3 10 Operations Status Request 3 12 Optoisolator Circuits A 6 Output 3 18 Output M...

Page 142: ...smatch 2 20 Sequence On Noread 2 20 Sequential Matching 2 19 Serial Command Beep 2 34 Serial Command Echo 2 34 Serial Command Status Request 3 5 Serial Data 2 16 Serial Trigger Character 2 14 3 10 Ser...

Page 143: ...x UPC 2 27 3 14 User Defined 2 11 User Defined Multidrop 2 12 3 8 User Defined 3 7 Utility Serial Commands 4 2 V Vorsichtsma nahmen x W Warning Messages 3 24 Warning Summary viii Warnung xi Warranty I...

Page 144: ...I 6 MS 850 Raster Scanner User s Manual Index Index...

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