London Electronics EasyReader ER4S Instruction Manual Download Page 22

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Modifications and revisions

Revisions and modifications may be made from time to time, for several reasons

if users ask for new options to be included in the functions.

if users ask for functions to be modified in some way

when errors in the manual are corrected

when errors in the programme software are corrected

whenever the product is otherwise improved or developed

29 Sept 2003

Product released with SEr1.0 software

25 March 2004

Added wiring and jumper record sheet to page 20

Summary of Contents for EasyReader ER4S

Page 1: ...Rear case screws please note The rear panel is held in place with finger screws which only need to be gently tightened Do not use tools to tighten or loosen the screws as this could cause damage to th...

Page 2: ......

Page 3: ...aration of Conformity 21 Description 3 Displayed characters how to select 12 Eject unwanted characters 11 Fault finding 18 Flashing command 5 Idling mode 10 Introduction 1 Inverting the data logic 18...

Page 4: ...ent replacement Or we may have no stock at the time you urgently need it You may also need to pay extra carriage charges if you want a fast guaranteed courier service Warranty repairs or replacements...

Page 5: ...r 110V supply or 1Afor DC supplies in the range 11 30VDC Check that the model number and supply voltage suit your application before you install the meter Don t touch any circuitry after you have conn...

Page 6: ...nus sign All adjustments are made with front panel pushbuttons A lockout connector allows you to disable the front panel programming buttons to protect settings An unlocked display won t perform parit...

Page 7: ...ttings see connections page Set baud rate address parity etc to suit your system Now if you send an ASCII character of the correct baud rate the meter should respond With the lockout OFF the meter wil...

Page 8: ...n display capital and lower case alphabetic characters will appear the same and some letters such as K W and X are unrecognisable 0 cC oO 1 dD pP 2 eE qQ 3 fF rR 4 gG sS 5 hH tT 6 iI uU 7 jJ vV 8 kK w...

Page 9: ...inverted data use Signal Common Signal A Signal B Common To access the connectors you ll need to remove the display fromthe wall and remove the 4 screws on the rear plate Signal Common Power Signal S...

Page 10: ...00 9600 baud Notes Lower baud rates allow longer transmission distances Approximate limits you can expect for RS232 are shown below Baud Distance max 300 800 metres 600 400 metres 1200 200 metres 2400...

Page 11: ...esn t include CR The termination character page tells you how to do this Adr 1 to Adr E for 1 character addressing in the range 1 E eg ETX STX 5 1234 ETX displays 1234 on an indicator with Adr 5 An in...

Page 12: ...signifies EVEN PAIRTY P od signifies ODD PARITY Use the UP or DOWN buttons to change the parity setting to suit your needs Press OK to save your choice If there is a parity error the display will sho...

Page 13: ...ays show the last valid data string t o 3 signifies that the display will show if no valid data arrives within 3 seconds t o 10 signifies that the display will show if no valid data arrives within 10...

Page 14: ...setting on the previous page the display will show EJ XX where XX correponds to the number of characters to lose Use the UP or Down buttons to select the number of characters to eject in the range 00...

Page 15: ...e the display will show dSP 3 or dSP 4 or dSP 5 dSP means display You can select either 3 4 or 5 digits if you press the up or down button In our previous example we d choose dSP 4 Press OK to save yo...

Page 16: ...ength You could specify the letter K as your termination character provided it always appears in this position relative to the data of interest K is represented by 4B in ASCII hex Here s how we would...

Page 17: ...force the display to 0 regardless of the actual incoming data value you can do so with the tare function This is most often used in weighing applications Front panel Tare command 1 Connect the Tare t...

Page 18: ...if the wall material is not suitable to take screws directly Route cables neatly away from the display If the cables may become damaged in the environment protect them with suitable conduit or trunkin...

Page 19: ...ed to use screw plugs or other screw accessories if the material is not suitable to take screws directly Mount the bracket first then fit the display to the bracket There are 2 holes on each bracket y...

Page 20: ...after 3 10 30 or 60 sec onds without valid data arriving Termination character Normally set for CR Hex 13 but can be set for any HEXASCII value Programme memory EEPROM non volatile memory 10 year stor...

Page 21: ...ay values are cor rect 1 The baud rate may be wrong Check the sending de vice s baud rate and adjust the display s baud rate to match 2 Connections may be transposed If data is RS422 or RS485 transpos...

Page 22: ...uded in the functions 2 if users ask for functions to be modified in some way 3 when errors in the manual are corrected 4 when errors in the programme software are corrected 5 whenever the product is...

Page 23: ...20 Wiring and jumper record For future reference record all the jumper positions and wiring colours you used in your installation...

Page 24: ...bling includes relay output wiring All signalcabling shall be screened The screen shall only be terminated to the power earth terminal Declared as true and correct for and on behalf of London Electron...