Cash Register Help
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FREE programming for Sharp Cash Registers. We do our best to provide you with support materials and tips for
Sharp commercial grade Cash Registers if you don't find it here we have some links to commercial cash register
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Sharp ER-A420 Cash Register Programming Help and Tips
Sharp Cash Register program very much like most commercial cash registers do. You should always plan out your
program before you just start programming the register on the fly. Write it down and often even write out your code
before you start plugging in the register. You will be surprised how much faster it will go and with less trouble.
                   Sharp ER-A420 Cash Register Tax Programming

To Set the Tax Rate (I only deal with Rates and not Tax Tables, most states can use rates and do not require
tables, however if unsure please check with your accountant, CPA, Dept. of Revenue)

  • Turn key to PGM (program)
  • Enter 2711
  • Press the Decimal Key
  • Press @/For
  • Enter 1 (to select tax rate 1)*
  • Press @/For
  • Enter Rate 0.0001 to 99.9999% (example for 8.8% enter 8.8000)
  • Press CA/AT
  • Make sure you return the key to Reg.
  • Perform a Test.
  • Please remember this sets the Tax Rate it does not make the department taxable (see next step)

*To enter tax rates 2 through 4 replace 1 with the rate you wish to program.
My preference is to program Sharp Cash Registers using the Job-Code Based Programming rather then the direct
method also available in some models. Everything on the page will be Job-Code Based Only.
Sharp ER-A420 Cash Register Taxable/NonTaxable Department Programming
To make a department Taxable

  • Turn key to PGM (Program)
  • Enter 2111
  • Enter Decimal
  • Press @/For
  • Enter XX (XX = department number to be programmed)
  • Press @/For
  • Enter 000001 for Tax Rate 1 or 000010 for tax rate 2 or 000100 for tax rate 3 or 001000 for tax rate 4
  • Press SBTL button
  • Press CA/AT ( Cash)
  • Make sure you return the key to Reg
  • Perform a test

Notes: you can make a department taxable by multiple tax rates for example to make a department taxable by rates 1
and 2 you would enter 000011 as the code.

This does not make a department open or preset

This code assumes a plus department not a minus
 Sharp ER-A420 Cash Register Department Open/Preset Programming
To make a department open or preset

  • Turn key to PGM2 (Program)
  • Enter 2110
  • Enter Decimal
  • Press @/For
  • Enter XX (XX = department number to be programmed)
  • Press @/For
  • Enter 000001 for Open, or 000002 for Pre-Set, or 000003 for Open and Preset, or 000000 to inhibit the
    department.
  • Press SBTL button
  • Press CA/AT ( Cash)
  • Make sure you return the key to Reg
  • Perform a test

There is more to this program although those feature are very seldom used. In this example I left the Validation print
Non Compulsory, Normal Sales departments, and Normal vs. Hash.

This program does not set the tax status see step above.

This program does not set a price, only makes it available or not.
  Sharp ER-A420 Cash Register Department Preset Price Programming
To preset price

  • Turn key to PGM (Program)
  • Enter 1110
  • Enter Decimal
  • Press @/For
  • Enter XX (XX = department number to be programmed)
  • Press @/For
  • Enter price you would like pre-set (do not use a decimal, it will be auto set example for $1.00 you would enter
    100
  • Press SBTL button
  • Press CA/AT ( Cash)
  • Make sure you return the key to Reg
  • Perform a test

This program does not set the tax status see step above.

This may not work if you have not completed the above step.
More Sharp ER-A420 Cash Register Resources

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