Code 128 / GS1-128 in NAV 2016

mrettler · 2017-06-21

Hi there,
I'm struggeling in implementing a Code 128 C in Navision.
The code128 file comes from this site : http://www.dafont.com/de/code-128.font

Currently I'm not able to place the right Start,Stop and FNC1 Character in Navision. I searched the whole web for a solution but i couldnt find it.

If i use the normal ASCII charset for that it doesent work. http://www.adams1.com/128table.html

Does anyone ever had the same issues? Or does anyone build his own Code128C BarCode in Navision?

Thanks in advance

xStepa · 2017-06-21

Hi, Code128 is not only about the start/stop characters. Also if you have font from GrandZebu, you are using wrong char table. You can find the correct one here:
grandzebu.net/informatique/codbar-en/code128.htm

Tested in NAV and works fine.

mrettler · 2017-06-22

Hi xStepa, thanks for your answer! I'll check that and will give you a feedback.

mrettler · 2017-06-22

So i tested it with your char table and Code A and Code B are working fine. But when i try to use Code C with some FNC1-Flags in it, im not able to read the BarCode with an App like "Barcode Scanner".

Here is my Code:

LOCAL EncodeBarcode(pText : Text[250]) RetVal : Text[250]
StartChar:= 210;
StopChar:= 211; 

//Checksum start for Code C
Checksum :=105;
counter :=0;
FOR i:=1 TO STRLEN(pText) DO BEGIN
  counter += 1;
  //Check if Char is FNC1
  IF pText[i] <> 207 THEN BEGIN
    currenttxt:= STRSUBSTNO('%1%2',pText[i],pText[i+1]);
    EVALUATE(ChecksumInt, currenttxt);
    Checksum := Checksum +(counter * ChecksumInt); 
    i+=1;
  END 
  ELSE BEGIN
    Checksum := Checksum +(counter * 102); 
  END;
END;
ChecksumChar:= Checksum MOD 103;

//Create ChecksumChar based on ASCII-Table
CASE ChecksumChar OF
 0 : ChecksumChar := 212;
 1..94 : ChecksumChar += 32;
 95 : ChecksumChar := 200;
 96 : ChecksumChar := 201;
 97 : ChecksumChar := 202;
 98 : ChecksumChar := 203;
 99 : ChecksumChar := 204;
 100 : ChecksumChar := 205;
 101 : ChecksumChar := 206;
 102 : ChecksumChar := 207; 
 END;

RetVal:=STRSUBSTNO('%1%2%3%4',StartChar,pText,ChecksumChar,StopChar);
EXIT(RetVal);

I call this function like this, where FNC1 hast the value 207:

EncodeBarcode(STRSUBSTNO('%1%2%3', FNC1, '00', ItemLedgerEntryRec2."SSCC No."));

I dont know why espacially the Code C does not work.

xStepa · 2017-06-22

You can't sum the pairs in your checksum - only the final chars ...
(3754 => EV => 1*E + 2*V) - calculate the checksum from the result string:

checksum := EncodedNumber[1] - ' ' - 73;

FOR i := 2 TO STRLEN(EncodedNumber) DO BEGIN
  IF EncodedNumber[i] <= 126 THEN
    checksum += ((i-1) * (EncodedNumber[i] - ' '))
  ELSE
    checksum += ((i-1) * (EncodedNumber[i] - ' ' - 73));
END;

checksum := checksum MOD 103;

IF checksum <= 126 THEN
  EncodedNumber += GetStringFromOrdinal(checksum + 32)
ELSE
  EncodedNumber += GetStringFromOrdinal(checksum + 32 + 73);

EncodedNumber += GetStringFromOrdinal(211); 

EXIT(EncodedNumber);

EDIT: Sorry, should be the same, but your RetVal seems to be wrong, since the pText is not encoded ...

AitorEG · 2021-10-19

Hello,
I've found this post due to a problem. In our customers with navision 2016-2018, we've installed the barcode management objects downloaded from this web page. Everything was working perfeclty, until one customer changed the requisites. Now, instead of Code128, they must print barcodes ein GS1-128. What changes must be do for this aim?

Thank you all

Code 128 / GS1-128 in NAV 2016

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