Reader (Scanner) Rules

Reader (Scanner) Rules


This is intended for re-seller use and not for end users.

Reader rules are used to tell GPoS how information should be handled when it is received from input devices.  These include Magnetic Strip Readers, Barcode Scanners, I-Button Readers etc.  You can use different prefixes and data formats to fire any function from within GPoS.  Therefore it is possible to create Magnetic Cards, Barcodes etc to log a clerk onto the till, run a set of reports off etc.  The important part of setting up reader rules is understanding and identifying the component parts of the data.

To do this with a keyboard wedge device such as a Posligne 1500's card reader simply open Notepad and swipe the card.  If the reader is a serial reader, we suggest using PuTTY to read the information.  To do this you specify the Comm Port and the Communications settings and then when you swipe the card the data will be presented in the white box.


Fields available when setting up a Reader Rule

Rule Name: The name used for the reader/scanner

Prefix: The prefix to detect - This is the data at the start of the string used to tell GPoS which rule to follow

Suffix: The suffix to detect - this is not used and should be left as null

Length: The length of information expected (If the reader appends a CR please increase the length by 1 - this usually applies to keyboard wedge devices)

Key Types:

Code:    Meaning:

0          System Key

1          PLU

2          PO

3          RA

4         Payment

5         Correction

6         Discount

8        Clerk

9        Plu Modifier

10      Macro

14      Deposit Buttons (keyoffset 1 = IN, 2 = OUT)

50      Screen Page

Key Off Set: If the key type has been  set to 0: System key, then the key off set is the system key which will be used. See the system keys list for available keys

Code Portion Start: The position that the information being passed starts from.

Code Portion Length: The length of the information being passed

Amount Portion Start: If using price embedded barcodes, enter the position which the price information starts from

Amount Portion Length: The number of digits that makes up the price

Qty Portion Start: If using weight embedded barcodes, enter the position which the quantity information starts from

Qty Portion Length: The number of digits that makes up the weight

Keyboard Wedge Peripheral Type: 0 = Dallas Key, 1 = Scanner, 2 = MCR, 3 = Number Input - You need to set this option when using the reader rule for clerk functions.


Loyalty Reader Rule

Keyboard Wedge Example with Carriage Return and Line Feed Enabled :-



For the above example you would setup the reader rule as below
RecordID
Enter a Unique number here
Rule Name
Enter a description for the rule
Prefix
;17502 (This prefix is a purely an example, your prefix will be on your software licence sheet)
Suffix
(null)
Length
14
KeyType
0
KeyOffset
46
CodePortionStart
2
CodePortionLength
10
AmountPortionStart
(null)
AmountPortionLength
(null)
QtyPortionStart
(null)
QtyPortionLength
(null)
KeyboardwedgePeripheralType
(null)

NOTE : We recommend disabling the Line Feed on the card reader - with Line Feed disabled  the Length would drop 1 to 13



Price Embedded Barcode



The above is an example of the most commonly used Price Embedded Barcode format.  This would convert into a reader rule setup as below.
RecordID
Enter a Unique number here
Rule Name
Enter a description for the rule
Prefix
02
Suffix
(null)
Length
13
KeyType
1
KeyOffset
0
CodePortionStart
3
CodePortionLength
5
AmountPortionStart
9
AmountPortionLength
4
QtyPortionStart
(null)
QtyPortionLength
(null)
KeyboardwedgePeripheralType
(null)

For further information you may find this useful http://wiki.answers.com/Q/How_does_a_price_embedded_bar_code_work


Weight Embedded Barcode

Weight embedded barcodes work as above except you would swap Amount for Quantity.


Clerk Cards

The GPoS standard prefix for a clerk card is 96969


With the clerk card the code portion is the information

RecordID
Enter a Unique number here
Rule Name
Enter a description for the rule
Prefix
;96969
Suffix
(null)
Length
12
KeyType
8
KeyOffset
0
CodePortionStart
7
CodePortionLength
4
AmountPortionStart
(null)
AmountPortionLength
(null)
QtyPortionStart
(null)
QtyPortionLength
(null)
KeyboardwedgePeripheralType
2 (as the above example has come from a MCR)

You will also need need to make sure that system option 387 (Use Keyboard Wedge Peripheral Type setting when processing reader rules) is set to true


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