This document provides instructions for generating Code 128 barcodes in Microsoft Excel using a Code 128 barcode font. It includes the following steps: 1. Download and install a Code 128 barcode font 2. Create an Excel sheet with headers for the barcode string, presentation, and a check cell 3. Insert a VBA module with code to encode the barcode string 4. Use the Code128 function to generate the encoded string and display it with the Code 128 font 5. Add formulas to generate and check the barcodes for each data entry

1. barcodelive.org

2. table of content
1 2
What Is Code 128
Barcode Font?
How to Generate
Code 128 Barcode
Font for Excel?

3. 1
Code 128 Barcode Font is a type of barcode font that
allows users to create code 128 barcodes in Excel
WHAT IS CODE 128
BARCODE FONT?
barcodelive.org

4. A high-density linear
barcode that can hold large
amounts of data in a
compact format
Easy to install & use and
can be integrated into a wide
range of applications
Code128 Code128font

5. CODE 128
THREE SUBSETS
Code 128A: for alphanumeric data (uppercase
letters, numbers & control characters)
Code 128B: for full ASCII data (uppercase
and lowercase letters, numbers & symbols)
Code 128C: for numeric-only data

6. barcodelive
2 How to Generate
Code 128 Barcode
Font for Excel?

7. Download Code 128 Font
and extract the downloaded
folder into the
C:WindowsFonts folder
Turn on the Excel's
Developer module
Step1 Step2

8. Barcode
Barcode
String
Barcode
Presentation
Check
X X X X
Step3
Make a new Excel sheet in Microsoft with the following titles &
structure

9. Choose Visual Basic
from the Developer tab
on the ribbon to launch
the Visual Basic window
Step4
Step5
Right-click & choose "Insert Module." Then,
paste a code

10. Option Explicit
Public Function Code128(SourceString As String)
'Written by Philip Treacy, Feb 2014
'http://www.myonlinetraininghub.com/create-barcodes-with-excel-vba
'This code is not guaranteed to be error free. No warranty is implied or expressed. Use at your own risk and carry
out your own testing
'This function is governed by the GNU Lesser General Public License (GNU LGPL) Ver 3'Input Parameters : A
string
'Return : 1. An encoded string which produces a bar code when dispayed using the CODE128.TTF font
' 2. An empty string if the input parameter contains invalid characters
Dim Counter As Integer
Dim CheckSum As Long
Dim mini As Integer
Dim dummy As Integer
Dim UseTableB As Boolean
Dim Code128_Barcode As String
If Len(SourceString) > 0 Then
'Check for valid charactersFor Counter = 1 To Len(SourceString)
Select Case Asc(Mid(SourceString, Counter, 1))
Case 32 To 126, 203Case Else
MsgBox "Invalid character in barcode string." & vbCrLf & vbCrLf & "Please only use standard ASCII
characters", vbCritical
Code128 = ""Exit FunctionEnd SelectNext
Code128_Barcode = ""
UseTableB = True
Counter = 1Do While Counter <= Len(SourceString)
If UseTableB Then'Check if we can switch to Table C

11. mini = IIf(Counter = 1 Or Counter + 3 = Len(SourceString), 4, 6)
GoSub testnum
If mini% < 0 Then 'Use Table C
If Counter = 1 Then
Code128_Barcode = Chr(205)
Else 'Switch to table C
Code128_Barcode = Code128_Barcode & Chr(199)
End If
UseTableB = False
Else
If Counter = 1 Then Code128_Barcode = Chr(204) 'Starting with table B
End IfEnd IfIf Not UseTableB Then'We are using Table C, try to process 2 digits
mini% = 2
GoSub testnum
If mini% < 0 Then 'OK for 2 digits, process it
dummy% = Val(Mid(SourceString, Counter, 2))
dummy% = IIf(dummy% < 95, dummy% + 32, dummy% + 100)
Code128_Barcode = Code128_Barcode & Chr(dummy%)
Counter = Counter + 2Else 'We haven't got 2 digits, switch to Table B
Code128_Barcode = Code128_Barcode & Chr(200)
UseTableB = TrueEnd IfEnd IfIf UseTableB Then'Process 1 digit with table B
Code128_Barcode = Code128_Barcode & Mid(SourceString, Counter, 1)
Counter = Counter + 1
End If

12. Loop
'Calculation of the checksumFor Counter = 1 To Len(Code128_Barcode)
dummy% = Asc(Mid(Code128_Barcode, Counter, 1))
dummy% = IIf(dummy% < 127, dummy% - 32, dummy% - 100)
If Counter = 1 Then CheckSum& = dummy%
CheckSum& = (CheckSum& + (Counter - 1) * dummy%) Mod 103Next'Calculation of the checksum ASCII code
CheckSum& = IIf(CheckSum& < 95, CheckSum& + 32, CheckSum& + 100)
'Add the checksum and the STOP
Code128_Barcode = Code128_Barcode & Chr(CheckSum&) & Chr$(206)
End If
Code128 = Code128_Barcode
Exit Function
testnum:
'if the mini% characters from Counter are numeric, then mini%=0
mini% = mini% - 1
If Counter + mini% <= Len(SourceString) Then
Do While mini% >= 0
If Asc(Mid(SourceString, Counter + mini%, 1)) < 48 Or Asc(Mid(SourceString, Counter + mini%, 1)) > 57 Then Exit
Do
mini% = mini% - 1
Loop
End If
Return
End Function

13. Step6
Insert =Code128([@Barcode]) into cell B2 ("Barcode String").
Insert =[@[Barcode String]] into cell C2 ("Barcode
Presentation").
Insert the following code in cell D2 ("Check"):
=IF(ISNUMBER(SEARCH("Â",[@[Barcode
Presentation]],1)),"Error!","")
Reopen your Excel document and add the following formulas:

14. Step7
Highlight Column C & change
the font to “Code 128”.
Now when you enter data into
cell A2, a barcode should be
displayed in cell C2 and so-on
down the entire sheet.

15. Thank you!
barcodelive.org