HI-QSLIM 2 USER`S MANUAL 1
Contents
1. In this mode all the digits of the analog input reading are sent to the serial port This is useful for determining calibration values for SCALE and OFFSET Set the SCALE 1 and OFFSET 0 then the serial output is the raw A D reading Table 1 Configuration Command First Digit Value and Function Summary Second Digit Adding 1 to the second digit total enables analog input readings Adding 2 to the second digit total enables continuous transmission of analog input readings over serial line Adding 4 to the second digit total enables SLIM2 s responses to serial commands to be returned ae Adding 8 to the second digit total enables RS 485 mode Table 2 Configuration Command Second Digit Value and Function Summary If the user wanted to configure the HI QSLIM2 as e azero bottom moving dot bargraph first digit 3 e making A D readings second digit 1 e with the HI QSLIM2 responding to serial inputs second digit 2 digit 4 the command sent to the HI QSLIM2 would be SOICONF35 lt CR gt Other examples can be found in Section VI Sample HI QSLIM Operating Modes HI QSLIM 2 USER S MANUAL Operation Guide for HI QSLIM2 LED Analog Bargraph Digital Meter VI SAMPLE HI QSLIM2 OPERATING MODES Samples in this section apply to specific hardware configurations the user may not have ordered For example to set the following sample operating modes a serial I O option must have been ordered To use2. mA VDC Digital Input ENE RaNELAAETED E EEA PA EE ooTASRNNHEAST ea L TLCMOS Multilevel Tpu ak croscsressiensanieisarsentonneliacstdbiaseniteeeetiaetraatarrdieerned hires T E TEE eer Dry Contact to 250V Frequency Response TTL Serial L O RS5 232C R 5485 ce ee ae OW RIOR ES ieina raccencctcativesnctetnmenecston TONN IME cic icis sscsccennentnnsesnessintatersiwcene IUR Hissini rena 2 Always apply power before signal 3 SVDC 5 0 25V at connector 4 Notice terminal orientation before connecting Notes RS 232C amp Digital Signal Ground Do Not Connect Reserved for Custom Default Control Receive Data RS 232C 485 Transmit Data RS 232C 485 Digital Signal Input or Contact Analog Signal Input Internal Instrument Ground for Analog Inputs For VDC or AC High Input Gnd for VDC or AC Low Power In TYPE B 1 Watt Max Data Input Data Input Power Ground 1 1 in 100 Unipolar 2000 1 00K TTL CMOS Dry Contact to 250V EEA AA Savoie L KHZz RS 232C RS485 Characters sorsssscvsvsessvaernerecsevnssncenssnrerrescensransnssnoence Baud Rate Address Selection Power Rea t SVDC ssessessensensennennonnannannannannanne PA A E EEE ames ya sre cay canon Gee ea AITTEN EE AL panes AT A E A E N sc OD Sid oia anc aaeseoueaereinaN Q500 Sid et retired rer ren eRe Rs SERN tre Via Serial Port Via Serial Port VW a AA AELE Trane PN aa NA ee ASCII 9600 Std Via Serial Port 2W SVDC 5 6 32VDC
3. 0 and 50 HI QSLIM 2 USER S MANUAL Operation Guide for HI QSLIM2 LED Analog Bargraph Digital Meter RS 485 Remote Digital Display with Bottom Zero Bargraph Display Same as example above but on a RS 485 system that does not want any echoes or responses from the HI QSLIM2 Bit Value 1 Digit Function 1 Digit Value 2 Digit Function 2 Digit Value Bar graph mode select bitO 0O Enable readings a ae 2 Bar graph mode select bit 0 Enable serial transmission of readings 4 Enables bargraph follows l Enable echo serial inputs a i a a a 8 Enables calibration mode 0 First Digit Total 4 Second Digit Totals 8 Table 4 RS 485 Remote Digital Display with Bottom Zero Bargraph Display CONF Value SOICONF48 lt CR gt Set configuration SOISI lt CR gt Set the digital display scale S0100 lt CR gt Set the digital display offset SOIBS2 lt CR gt Set the bargraph scale SOIBOI lt CR gt Set the bargraph offset SOIWRITE lt CR gt Save values to user s memory S01D50 lt CR gt Display 50 and 50 RS 232 Analog Input Meter with Zero Bottom Bargraph This is the factory default mode Digital display shows O to 99 bargraph displays 1 LED on at zero input and all LEDs on at full scale Echo of RS 232 input and HI QSLIM2 responses enabled Bit Value 1 Digit Function 1 Digit Value 2 Digit Function 2 Digit Value Bar graph mode select bitO 0 Enable readings as E 2 Bar graph mode select bit 0 Enable
4. 20 790 2808 Serial Communications Protocol for the HIQ SLIM 2 and SLIM 3 Remote Display 5 2012 I INTRODUCTION The SLIM 2 and SLIM 3 uses the standard OTEK communication protocol ASCII S lt ADDRESS gt lt COMMAND gt lt CR gt The starting character is S followed by the address The default address is 01 The command follows and must be terminated by a carriage return lt CR gt This document applies to firmware release SL2_R100 and SL3_R100 II BARGRAPH FOLLOWS DIGITAL MODE The seven segment digital display is controlled using the d command Sending S01D45 displays 45 on the seven segment display The BR and BR command sends data for the bargraph display The serial string SOIBR 45 will illuminate 45 of the bottom LED bargraph segments HI DEFAULT AND USER MODES The SLIM 2 and SLIM 3 have two modes of operation In DEFAULT mode the device uses factory set operating parameters defined in section V In USER mode address baud rate configuration flashing and intensity settings revert to the state they were in the last time a WRITE command was issued Which mode is used is determined on powerup by the position of an external jumper To enable the factory default settings jumper terminals and 8 together Serial commands can also change the operating modes RST RST C IV DISPLAYED ASCIT COMMAND SET This table shows the decimal ASCII number the character for that number and the character as displayed on the
5. 3 32VDC Power Input Non isolated 0ccecreeees MA SNDC5 6 J2VWVDC eenersrrrrerenrernrenererenns VDC25 6 32 VDC Power Input Isolated ssi aiviscsiatarcrxasarsesei riesnsimanetl che 4 Geos cpcenvensens conersennsnnannsnnenninnenensspeses Power Input Isolated 90 205 VAC paai Operating Temperature 0 60 C St rage Temperature assscessssesersvescansersacsessorssesrsases tO TOE enana O tO TOC erasana niran A DO A Humidity a re E i E AE EEE E TT Seed dhe l A AEA AAEE E E 5 95 N C MTBF Calculated Front Panel 7 WV NANA cso sc catcuiaisiitensnttaca msn ganaswanenpsbdetisaueseuienlencenns 3 oz 84g MAALT E ES cess 3 oz 0 2 ca ne oD 3 oz 84g NEMA4X On Request Use 9 amp Specify NEMA4X Specifications Subject to Change Without Notice Contact OTEK for Your Custom Needs 4016 E TENNESSEE ST TUCSON AZ 85714 U S A 520 748 7900 FAX 520 790 2808 E MAIL sales otekcorp com http www otekcorp com SINCE 1974 1 5 Digits Only 50 000 Counts 2 Event Counter Only Consult OTEK for other Functions 3 Consult Factory for Availability HI QSLIM 2 USER S MANUAL ORDERING INFORMATION 12 14 11 DIGIT LED COUNTER OR 4 DIGIT PROCESS INDICATOR i2 34 HI QSLIM1 OOOO SERIAL VO i VE aa USB Powered 9 Custom Contact OTEK _ 9 Custom Contact OT EK l ALIBRATIC Eom RE AE EE E EA Standard 9 Custom Contact OTEK POWER INPUT A RRE Non lIsolated 5 VDC R
6. HI QSLIM 2 USER S MANUAL Low Cost Smart Bargraph Digital Meters For V mADC Input And Or USB RS 232C 485 Remote Displays MODEL HI QSLIM 8 DIGITS SLIM1 7T SEGMENTS DESCRIPTION HI OTEK s new HI QSLIM series of Low Cost Smart Indicators complement the extensive and proven HI Q line of Intelligent Programmable Controllers We have applied our expertise to bring you the industry s first low cost bargraph without sacrificing the quality and reputation of our HI Q line The HI QSLIM1 offers eight 8 digits seven segment 0 6 display with limited alpha characters and 0 9 numerals plus decimal points The HI OSLIM2 has 51 segments 2 resolu tion amp 2 digits 1 The HI OSLIM3 gives you 1 resolution with its 101 segment high intensity bargraph amp 2 digit display Whichever you choose for your application you can depend on its quality and OTEK s limited lifetime warranty SLIM2 APPLICATIONS Remote Display for RS 232485 USB Trend Indicator Counter Timer Inclinometer Indicator Well Depth Distance Position Altitude Temperature Pressure Flow Humidity pH RPM 520 748 7900 FAX 520 790 2808 E MAIL sales otekcorp com http www otekcorp com 60 of ACTUAL SIZE SINCE 974 LIM3 Horizontal Version Center Zero Available ha oa ok Ee a ua a m 0 20 W W 50 60 70 y il i 90 100 Zero amp Span Adjustm
7. ON RANGE n Oto 2 ASCII characters nn 12 gt 1200 baud nn 24 gt 2400 nn 48 gt 4800 nn 96 9600 nn Q to 100 Non numeric data is ignored Only integer values are displayed nn 0 to 100 Non numeric data is ignored Only integer values are displayed n return Returns current config 0 no echo of serial input 4 echo serial inputs nn ASCII chars n Q to 1 no flashing n 2 to 3 slowest 1 14 S n 4 to 5 slow n 6 to 7 medium n 8 to 9 fastest 142 mS n 0 off n 1 to 3 dim n 4 to 6 medium n 7 to 9 brightest n 0 no decimals on n to 2 numbered from left of the display 1 EXAMPLE SOLADDR99 lt CR gt SOIBAUD2400 lt CR gt SO1BR 45 lt CR gt 45 of the bottom bars are illuminated SOIBR 4 5 lt CR gt 4 of the bottom bars are illuminated SOIBR 45 lt CR gt 45 of the top bars are illuminated SO1LCONF lt CR gt Shows current configuration SOIDHI lt CR gt display shows HI SOIFLASHO lt CR gt SOIFLASH3 lt CR gt SOLINTO lt CR gt display off SOLINT9 lt CR gt display max SO1PT1 lt CR gt Ist decimal point on A o
8. RS 232 Analog Input Meter with Center Zero Bar Graph and Continuous RS 232 Reading Transmission HI QSLIM2 reads analog input and displays as 0 to 99 on digital display Bargraph is configured for a center zero when the input is 50 of full scale Readings below 50 of full scale will light bargraph elements below the center of the graph inputs above 50 will light LEDs above the center of the bargraph Note if the digital display is also offset with a SO1O 50 command the negative sign will occupy the leftmost of the two digital display places e g 50 is displayed as 5 Bit Place Bit Value 1 Digit Function 1 e Value 2 Digit Function 2 Digit Value Bar graph mode select bit 0 Enable readings 2 2 Bar graph mode select bit 0 Enable serial transmission of readings Enables bargraph follows Enable echo serial inputs digital display 4 8 Enables calibration mode 0 Enables RS 485 Mode 0 First Digit Total Second Digit Total Table 8 RS 232 Analog Input Meter with Center Zero Bar Graph and Continuous RS 232 Reading Transmission CONF Value SOICONF27CR gt Set configuration S01S653 lt CR gt Set the digital display scale S0100 lt CR gt Set the digital display offset SO1BS1313 lt CR gt Set the bargraph scale SO1BO 24 lt CR gt Set the bargraph offset SOIWRITE lt CR gt Save values to user s memory HI QSLIM 2 USER S MANUAL 4016 E Tennessee St Tucson AZ 85714 2130 Tel 520 748 7900 Fax 5
9. SLIM 2 AND 3 digital display Sending ASCII 8 BS destructive backspace will erase the previous character sent to the SLIM 2 AND 3 input buffer Sending ASCII 27 ESC will clear the SLIM 2 AND 3 input buffer Decimal Char Display Decimal Char Display Decimal Char Display Decimal Char Display 45 56 8 a 67 C z 79 O o 46 57 9 g 68 D d 80 P F A7 y 2 58 a 69 E E 81 Q 48 0 0 59 2 70 F F 82 R r 49 1 60 lt z 71 G g 83 S 5 50 2 Z 61 a 72 H h 84 P E 51 3 J 62 gt 73 I 85 U Li 52 4 4 63 z 74 J u 86 V z 53 5 5 64 75 K 87 W z 54 6 B 65 A A 76 L L 88 X P 55 7 66 B h 77 M 89 Y 4 78 N n 90 Z z 10 V COMMANDS COMMAND ADDRn BAUDnn BR nn BR nn CONFn Dnn FLASHn INTn PTn RST RST C WRITE Changes the address Default is 01 Changes the baud rate Default is 9600 Illuminates nn of the bars from the bottom of the bargraph Illuminates nn of the bars from the top of the bargraph Change the SLIM configuration Default is 4 Displays ASCII characters on 7 segment display See also section I Flashes display Change display Intensity There are four levels Default is 9 Light decimal point position Default is 0 Resets SLIM to user values held in EEPROM Resets SLIM to factory default values Saves configuration data to EEPROM Data saved includes D B mode ADDR BAUD CONF FLASH and INT HI QSLIM 2 USER S MANUAL DESCRIPTI
10. TI Vertical SIGNAL I eed Ce Horizontal Sitcoms sie None POWER INPUT s PONEERDE i 4 20mADC en Non Isolated 5 VDC A esssesresnnnsnne seenensnnnonns VD f hasn lated 10 32 VDC 9 Custom Contact OTEK s Isolated 90 265 VAC E E Isolated 5 VDC CF Contact Factory a aa cal neater i kite a P Isolated 6 32 VDC men See seer Non Isolated 6 32 VDC BO annan USB Powered e ee E ET Custom 520 748 7900 FAX 520 790 2808 E E MAIL sales otekcorp com http www otekcorp com sw o m CORP SINCE 1974 MODEL HIQ SLIMI CF Contact Factory MODEL HIQ SLIM2 MODEL HIQ SLIM3 4016 E TENNESSEE ST TUCSON AZ 85714 U S A MADE age IN USA HI QSLIM 2 USER S MANUAL g TM 4016 E Tennessee St o lt Tucson AZ 85714 2130 E CORP Tel 520 748 7900 Fax 520 790 2808 SINCE 1974 Operation Guide for HI QSLIM2 LED Analog Bargraph Digital Meter I INTRODUCTION The HI QSLIM2 has a two digit seven segment LED display and a 51 element LED bargraph display The user can configure the HI QSLIM2 s response to serial input analog input and display formatting HI QSLIM2 ordering options include serial input outputs analog input signal processing and power supply Sections of this document apply to specific hardware configurations the user may not have ordered For example analog input readings are not available if Signal Input option 0 none is speci
11. ee ee Isolated 10 32 VDC F vcsinenpiniraniss Isolated 90 265 VAC bs Oe Isolated 5 VDC mn eE Isolated 12 VDC 2 ee Isolated 24 VDC E E EAE Isolated 6 32 VDC i r A Non Isolated 6 32 VDC E o d aaa Gousha neem in USB Powered L 9 Custom Contact OTEK 51 SEGMENT LED BARGRAPH WITH 2 DIGIT LED DISPLAY HI QSLIM2 SERIAL I O 1 i EAER Selsey None Le scccesmmieutwate EPPES RS232C Pnn aai RS485 E en USB Powered 9 Custom Contact OTEK SIGNAL INPUT 123 4 5 E f a l RANGE CALIBRATION ier TEN Standard 9 Custom Contact OTEK SCALE PLATE E i ere Standard 0 100 _9 Custom Contact OTEK POWER INPUT Usern ARTENE AY None Das ccvecsneeseese Non Isolated 5 VDC sii 4 20mADC gaat Corer Isolated 10 32 VDC r VAAT EEEE E 5VDC FP EENE Isolated 90 265 VAC 9 Custom Contact OTEK J Bas cesccusccccsccsseeens Isolated 5 VDC ir A EE SAET Isolated 12 VDC ie emer Isolated 24 VDC CF Contact Factory 6 isolated 6 32 VDC LAr dMon Touluted 6 32 VDC Hic sarc casenamitanenvieateess USB Powered coe eR Custom Contact OTEK 101 SEGMENT LED BARGRAPH WITH 2 DIGIT LED DISPLAY 123 4 5 6 HI QSLIM3 QJ 0O0O 0O 0O m RANGE CALIBRATION None ERARE AAE AEE EEN RS 232C DANAE RS485 E EEE area USB Powered i OET Standard Custom Contact OTER E PLATE E EAEE Standard 0 100 Q_ Custom Contact OTEK 9 Custom Contact OTEK D N
12. ents Behind Overlay Not Shown FEATURES RS 232C or RS 485 I O or USB I O ASCII Characters Stackable on Inch Centers Vertical or Horizontal Viewing Slim 3 Zero amp Span Front Panel Controls Only 2 Deep NEMAS Housing 6x 1x2 NEMA4X on Request Max power SVDC 1 watt Universal Power Input Standard Unicolor Red or Custom Multicolor R G Free Custom Software for Minimum Purchases Compatible with Any RS 232 422 485 USBASCII System Lifetime Warranty LTD 2 DIGITS amp 51 SEGMENTS HI OSLIM2 Process Meter 4 20mA 0 5VDC Strokes Per Hour Per Minute HI OSLIM3 604 of ACTUAL SIZE 2 DIGITS amp 101 SEGMENTS IF YOU DON T SEE IT ASK FOR IT 4016 E TENNESSEE ST TUCSON AZ 85714 U S A HI QSLIM 2 USER S MANUAL 0 125 2 8216 2 Terminal 10 ow Pulse In Power In Power In SIDE 1 RECOMMENDED PANEL CUTOUT 0 840 x 5 452 2 MOUNTING HOLES 2 FOR 4 CLEARANCE HARDWARE SUPPLIED 3 WIRE SIZE ACCEPTED gt 24 c 16 GA 4 ALL OOM 20 0 10 5 FOR STACKED APPLICATIONS MARE MOUNTING HOLES OH 0 960 CENTERS 6 UNITS WO POWER SUPPLY ARE ONLY 1 00 DEEP FE 87 5LIMME PARAMETE FF eae E a i E Diiia a Eight 8 Analog Input ACCUTACY ccceecesseeensecensercenss A EEEE eaer 1 Analog Input Resolution On Request 1 1 in 100 Polarity On Request Unipolar Zero amp Span On Request Input Impedance
13. fied This document applies to firmware release SL2_A200 ll ANALOG CALIBRATION If ordered with the appropriate options the HI QSLIM2 measures an analog input and displays the measurement on the digital and bar graph display and sends it over the serial communication link Analog to Digital Converter The input voltage or current to the HI QSLIM2 s Analog to Digital A D must be positive in reference to signal ground The input measurement from the A D converter ranges from 0 to 4095 counts Sixteen readings are added together for a sum ranging from 0 to 65 535 counts The HI QSLIM2 makes approximately 225 summed readings per second An A D reading from 65 021 to 65 535 counts causes an over range condition the digital display will show or and the bargraph will flash From 0 to 65 021 A D counts readings are processed and displayed These values are fixed in the HI QSLIM2 s programming Zero and Span Adjustments The zero and span potentiometers behind the HI QSLIM2 front cover overlay adjusts the input signal range over which the A D is making its conversions The zero potentiometer sets the bottom limit of A D conversions For example the zero potentiometer makes the HI QSLIM2 A D start converting input signals in a 4 to 20 mA loop at 4 mA The span potentiometer sets the full scale range of the A D In the 4 to 20 mA loop example the span potentiometer is set to produce an over range condition just above 20 mA This makes 20 mA the f
14. l ASCH S lt ADDRESS gt lt COMMAND gt lt CR gt The starting character is S followed by the address The default address is 01 The command follows and must be terminated by a carriage return lt CR gt When a HI QSLIM2 receives a valid S address sequence it tries to interpret the characters following as a command If so configured the HI QSLIM2 will respond with an asterisk for a valid command and a question mark for a command it wasn t able to decode See section IX for a table of HI QSLIM2 commands HI QSLIM 2 USER S MANUAL Operation Guide for HI QSLIM2 LED Analog Bargraph Digital Meter V HI QSLIM2 OPERATING MODES Operating modes of the HI QSLIM2 can be controlled by the configuration command CONF The CONF command is a two digit number that is the hexadecimal sum of the configuration bits An example CONF command is SOILCONF25 lt CR gt If the user sends only one digit the first digit is presumed to be zero The configuration digit values and their actions are described below First Digit _ id Bar graph mode select bit 0 Bar graph mode select bit 1 Bottom zero Top zero mode Center zero mode Bottom zero moving dot mode Adding 4 to the first digit total enables the bargraph follows A Er mode Any ASCII data sent to the digital display using the D command is also sent to the bargraph as 1f the B command was also sent Adding 8 to the first digit total enables calibration mode
15. serial transmission of readings 4 Enables bargraph follows Enable echo serial inputs I Re ll ee 8 Enables calibration mode 0 Enables RS 485 Mode 0 First Digit Total 0 Table 5 RS 232 Analog Input Meter with Zero Bargraph CONF Value SOILCONFSCR gt Set configuration S0O1S653 lt CR gt Set the digital display scale S0100 lt CR gt Set the digital display offset S01BS1313 lt CR gt Set the bargraph scale SOIBOI lt CR gt Set the bargraph offset SOIWRITE lt CR gt Save values to user s memory HI QSLIM 2 USER S MANUAL Operation Guide for HI QSLIM2 LED Analog Bargraph Digital Meter RS 232 Analog Input Meter with Zero Bottom Moving Dot Graph Same example as above but the solid bar LED graph is replaced with a moving dot Bit Value 1 Digit Function 1 Digit Value 2 Digit Function 2 Digit Value Bar graph mode select bit 0 Enable readings 2 Bar graph mode select bit 0 l Enable serial transmission of readings 4 Enables bargraph follows Enable echo serial inputs 1 a ace all aie _ 8 Enables calibration mode 0 Enables RS 485 Mode 0 Table 6 RS 232 Analog Input Meter with Zero Bottom Moving Dot Graph CONF Value SO1CONF35CR gt Set configuration S01S653 lt CR gt Set the digital display scale S0100 lt CR gt Set the digital display offset SOIBS1313 lt CR gt Set the bargraph scale SO1BO1 lt CR gt Set the bargraph offset SOIWRITE lt CR gt Save values to user s memory
16. the HI QSLIM2 as an analog input meter a signal input option must be ordered for the HI QSLIM2 RS 232 Remote Digital Display with Bottom Zero Bargraph Display In this mode the HI QSLIM2 displays data sent from a host computer All serial commands sent to the HI QSLIM2 are echoed back The bar graph display follows the digital display This means a number sent to the digital display is displayed on the bargraph display also Both displays are scaled for O to 100 If the host computer sends the number 50 ASCII 53 ASCII 48 the digital display shows 50 and 50 of the bar graph elements light The CONF values and a serial command sequence to set the scales and offsets are shown below Bit Value 1 Digit Function 1 Value 2 Digit Function 2 Digit Value 1 Bar graph mode select bit 0 Enable readings PO Bar graph mode select bit 0 Enable serial transmission of readings Enables bargraph follows Enable echo serial inputs digital display e Enables calibration mode D Enables RS 485 Mode a l First Digit Total ES a Second Digit Total mz ae Table 3 RS 232 Remote Digital Display with Bottom Zero Bargraph Display CONF Value SOICONF44 lt CR gt Set configuration SOIS1 lt CR gt Set the digital display scale S0100 lt CR gt Set the digital display offset SOIBS2 lt CR gt Set the bargraph scale SOIBOI lt CR gt Set the bargraph offset SOIWRITE lt CR gt Save values to user s memory SO01D50 lt CR gt Display 5
17. tored as the user values unless the customer requests special scales and offsets Scale and Offset Calculations All scale and offsets must be rounded to the nearest integer value The general formula for displays is Display value A D reading Scale Offset Display value digital display numerals or number of bargraph LEDs on Full scale digital display scale 65 021 Desired digital display 0 5 Example Scale 65 021 99 0 5 653 default digital display scale Digital display offset O default digital display offset Full scale bargraph scale 65 021 Number of bars to light 0 5 Example BarScale 65 021 49 0 5 1313 default bargraph scale Bargraph offset 1 default digital display scale Note LED 1 is typically set on to represent the zeroth LED lll REMOTE DISPLAY If a serial I O option is ordered the HI QSLIM2 can also be configured as a remote display In this mode serial data sent to the HI QSLIM2 will be displayed The serial data is treated as if it were an A D value The same two sets of scale and offset values act upon the serial input data See Section I above for information on setting the scales and offsets A HI QSLIM2 with an analog signal input option can be used as a remote display if the A D converter is turned off by the CONF command see section X for a table of HI QSLIM2 commands IV SERIAL COMMUNICATION The HI QSLIM2 uses the standard OTEK serial communication protoco
18. ull scale reading and provides the best A D accuracy Scale and Offset The input measurement actually displayed on the HI QSLIM2 digital and bargraph display can be calibrated to show engineering units by scaling and offsetting the raw A D values For example an A D reading of 65 000 could be scaled to show 20 on the digital display representing 20 mA or 20 PSI This same A D reading could also be scaled to light all the bar graph LEDs representing 100 of full scale There are two separate scale and offset values used in the HI QSLIM2 One set works on the A D data displayed on the digital display and sent to the serial communication port The other scale and offset are used for the bargraph Section IX describes the commands for setting both sets of scales and offsets Operation Guide for HI QSLIM2 LED Analog Bargraph Digital Meter 4 HI QSLIM 2 USER S MANUAL Factory Settings Best results are obtained from the HI QSLIM2 when the zero and span hardware adjustments are used to set the optimum A D input range for a given input signal The scale and offset are then used to tailor the displays for specific engineering units HI QSLIM2s are calibrated at the factory for the ordered input signal range using the zero and span adjustments The scale and offset values are set to display 0 to 99 on the digital and bargraph display for that input range These scale and offset values are the default values see section VII These are also s
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