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Problem reading multiple variable length element strings GS1


We bought a "IDAutomation Code 128 Font Advantage Package", and we are making some labels for the Meat Market.
We organized the label with all fixed-length elements at the start, but we have 2 variable elements: AI 423 and AI 424.
When using the following sample (in Crystal Reports), it prints correctly, but the reader does not separate the AI 423 from the 424.

IDAutomation_Code128 (CHR(212) + "17" + "200801" + CHR(213) + "423" + "620" + CHR(213) + "424" + "620")

After looking around, we found this post: https://support.idautomation.com/Barcode-FAQ/Barcode-GS1-not-complying-with-standard/_2105
When using the following sample, the application that calls the label (designed in Crystal Reports) crashes, with no error:

IDAutomationCode128 ("(17)200801423620(424)620",true)

CRASH DETAILS (EVENT VIEWER):
Aplicação: TraceOne.Touch.exe
Versão do Framework: v4.0.30319
Descrição: O processo foi terminado devido a uma excepção não processada.
Informações da Excepção: código de excepção c0000005, endereço da excepção 22B8A5A8

Nome da aplicação com falha: TraceOne.Touch.exe, versão: 14.900.0.557, carimbo de data/hora: 0x5e121006
Nome do módulo com falha: unknown, versão: 0.0.0.0, carimbo de data/hora: 0x00000000
Código de exceção: 0xc0000005
Desvio de falha: 0x22b8a5a8
ID do processo com falha: 0x%9
Hora de início da aplicação com falha: 0x%10
Caminho da aplicação com falha: %11
Caminho do módulo com falha: %12
ID do Relatório: %13
Nome completo do pacote com falha: %14
ID da aplicação relativa ao pacote com falha: %15

Operating System: Windows Server 2019 Standar (Version 1809)

Application: Crystal Reports called from Visual Basic application

02-10-20     4.1 year(s) ago    

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Brant

Best Answer

We recommend using the Crystal Font Formulas instead of the legacy UFL for most situations. The native formula is provided as an example in the installation package. The FNC1 can be encoded as CHR(202) in the native formula. Try the following using the native formula:

DataToEncode = (CHR(202) & "17" & "200801" & "423" & "620" & CHR(202) & "424" & "620")

You may refer to the GS1 AI (Application Identifier) & Element String Specification Reference for more information.

When generating GS1 symbols, IDAutomation recommends testing the result with the Barcode Decoder App which parses out GS1 data to verify proper encoding.

Posted 4.1 year(s) ago

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