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<H1>5.3 Composite Symbols (ISO 24723)</H1>
<P>Composite symbols employ a mixture of components to give more
comprehensive information about a product. The permissible contents
of a composite symbol is determined by the terms of the <A HREF="appxc.html">GS1
General Specification</A>. Composite symbols consist of a linear
component which can be an EAN, UPC, GS1-128 or GS1 DataBar symbol, a
2D component which is based on PDF417 or MicroPDF417, and a separator
pattern. The type of linear component to be used is determined using
the <FONT FACE="Courier">-b</FONT> or <FONT FACE="Courier">--barcode=</FONT>
switch or by adjusting <FONT FACE="Courier">symbol->symbology</FONT>
as with other encoding methods. Valid values are shown below.</P>
<CENTER>
<TABLE WIDTH=936 BORDER=1 CELLPADDING=4 CELLSPACING=3>
<COL WIDTH=105>
<COL WIDTH=254>
<COL WIDTH=540>
<TR VALIGN=TOP>
<TD WIDTH=105>
<P ALIGN=CENTER><B>Numeric Value</B></P>
</TD>
<TD WIDTH=254>
<P ALIGN=CENTER><B>Name</B></P>
</TD>
<TD WIDTH=540>
<P ALIGN=CENTER><B>Symbology</B></P>
</TD>
</TR>
<TR VALIGN=TOP>
<TD WIDTH=105>
<P ALIGN=CENTER>130</P>
</TD>
<TD WIDTH=254>
<P ALIGN=CENTER><FONT FACE="Courier">BARCODE_EANX_CC</FONT></P>
</TD>
<TD WIDTH=540>
<P ALIGN=CENTER>Composite Symbol with EAN linear component</P>
</TD>
</TR>
<TR VALIGN=TOP>
<TD WIDTH=105>
<P ALIGN=CENTER>131</P>
</TD>
<TD WIDTH=254>
<P ALIGN=CENTER><FONT FACE="Courier">BARCODE_EAN128_CC</FONT></P>
</TD>
<TD WIDTH=540>
<P ALIGN=CENTER>Composite Symbol with GS1-128 linear component</P>
</TD>
</TR>
<TR VALIGN=TOP>
<TD WIDTH=105>
<P ALIGN=CENTER>132</P>
</TD>
<TD WIDTH=254>
<P ALIGN=CENTER><FONT FACE="Courier">BARCODE_RSS14_CC</FONT></P>
</TD>
<TD WIDTH=540>
<P ALIGN=CENTER>Composite Symbol with GS1 DataBar-14 linear
component</P>
</TD>
</TR>
<TR VALIGN=TOP>
<TD WIDTH=105>
<P ALIGN=CENTER>133</P>
</TD>
<TD WIDTH=254>
<P ALIGN=CENTER><FONT FACE="Courier">BARCODE_RSS_LTD_CC</FONT></P>
</TD>
<TD WIDTH=540>
<P ALIGN=CENTER>Composite Symbol with GS1 DataBar Limited
component</P>
</TD>
</TR>
<TR VALIGN=TOP>
<TD WIDTH=105>
<P ALIGN=CENTER>134</P>
</TD>
<TD WIDTH=254>
<P ALIGN=CENTER><FONT FACE="Courier">BARCODE_RSS_EXP_CC</FONT></P>
</TD>
<TD WIDTH=540>
<P ALIGN=CENTER>Composite Symbol with GS1 DataBar Extended
component</P>
</TD>
</TR>
<TR VALIGN=TOP>
<TD WIDTH=105>
<P ALIGN=CENTER>135</P>
</TD>
<TD WIDTH=254>
<P ALIGN=CENTER><FONT FACE="Courier">BARCODE_UPCA_CC</FONT></P>
</TD>
<TD WIDTH=540>
<P ALIGN=CENTER>Composite Symbol with UPC A linear component</P>
</TD>
</TR>
<TR VALIGN=TOP>
<TD WIDTH=105>
<P ALIGN=CENTER>136</P>
</TD>
<TD WIDTH=254>
<P ALIGN=CENTER><FONT FACE="Courier">BARCODE_UPCE_CC</FONT></P>
</TD>
<TD WIDTH=540>
<P ALIGN=CENTER>Composite Symbol with UPC E linear component</P>
</TD>
</TR>
<TR VALIGN=TOP>
<TD WIDTH=105>
<P ALIGN=CENTER>137</P>
</TD>
<TD WIDTH=254>
<P ALIGN=CENTER><FONT FACE="Courier">BARCODE_RSS14STACK_CC</FONT></P>
</TD>
<TD WIDTH=540>
<P ALIGN=CENTER>Composite Symbol with GS1 DataBar-14 Stacked
component</P>
</TD>
</TR>
<TR VALIGN=TOP>
<TD WIDTH=105>
<P ALIGN=CENTER>138</P>
</TD>
<TD WIDTH=254>
<P ALIGN=CENTER><FONT FACE="Courier">BARCODE_RSS14_OMNI_CC</FONT></P>
</TD>
<TD WIDTH=540>
<P ALIGN=CENTER>Composite Symbol with GS1 DataBar-14 Stacked
Omnidirectional component</P>
</TD>
</TR>
<TR VALIGN=TOP>
<TD WIDTH=105>
<P ALIGN=CENTER>139</P>
</TD>
<TD WIDTH=254>
<P ALIGN=CENTER><FONT FACE="Courier">BARCODE_RSS_EXPSTACK_CC</FONT></P>
</TD>
<TD WIDTH=540>
<P ALIGN=CENTER>Composite Symbol with GS1 DataBar Expanded
Stacked component</P>
</TD>
</TR>
</TABLE>
</CENTER>
<P ALIGN=LEFT>The data to be encoded in the linear component of a
composite symbol should be entered into a primary string with the
data for the 2D component being entered in the normal way. To do this
at the command prompt use the <FONT FACE="Courier">--primary=</FONT>
command. For example:</P>
<P ALIGN=LEFT><FONT FACE="Courier">zint -b 130 --mode=1
--primary=331234567890 -d "[99]1234-abcd"</FONT></P>
<P ALIGN=LEFT>This creates an EAN-13 linear component with the data
"331234567890" and a 2D CC-A (see below) component with the
data "(99)1234-abcd". The same results can be achieved
using the API as shown below:</P>
<P ALIGN=LEFT> <FONT FACE="Courier, monospace"><FONT SIZE=2>my_symbol->symbology
= 130;<BR> my_symbol->option_1 =
1;<BR> strcpy(my_symbol->primary,
"331234567890");<BR> ZBarcode_Encode_and_Print(my_symbol,
"[99]1234-abcd");</FONT></FONT></P>
<P ALIGN=LEFT>EAN-2 and EAN-5 add-on data can be used with EAN and
UPC symbols using the + symbol as described in section 5.1.3 and
5.1.4.</P>
<P ALIGN=LEFT>The 2D component of a composite symbol can use one of
three systems: CC-A, CC-B and CC-C as described below. The 2D
component type can be selected automatically by Zint dependant on the
length of the input string. Alternatively the three methods can be
accessed using the <FONT FACE="Courier">--mode= </FONT>prompt
followed by 1, 2 or 3 for CC-A, CC-B or CC-C respectively, or by
using the <FONT FACE="Courier">option_1</FONT> variable as shown
above.</P>
<P ALIGN=LEFT><FONT COLOR="#ff0000"><B>NOTE</B></FONT>: <B>2D
component data starting with a production (AI 11) or expiration (AI
17) date must be followed by a batch number (AI 10).</B> In the
absence of real data this value can be entered as "0". This
is due to a known problem concerning the way the encoding is
optimised for date information. It is hoped this problem will be
resolved in a later release of Zint.</P>
<P ALIGN=LEFT> </P>
<P ALIGN=LEFT><A NAME="CCA"></A><FONT SIZE=5><B>5.3.1 CC-A</B></FONT></P>
<P ALIGN=LEFT>This system uses a variation of MicroPDF417 which
optimised to fit into a small space. The size of the 2D component and
the amount of error correction is determined by the amount of data to
be encoded and the type of linear component which is being used. CC-A
can encode up to 56 numeric digits or an alphanumeric string of
shorter length. To select CC-A use <FONT FACE="Courier">--mode=1</FONT>.</P>
<P ALIGN=LEFT><IMG SRC="cca.png" NAME="graphics1" ALIGN=LEFT WIDTH=238 HEIGHT=218 BORDER=0><BR CLEAR=LEFT><BR><BR>
</P>
<P ALIGN=LEFT><A NAME="CCB"></A><FONT SIZE=5><B>5.3.2 CC-B</B></FONT></P>
<P ALIGN=LEFT>This system uses MicroPDF417 to encode the 2D
component. The size of the 2D component and the amount of error
correction is determined by the amount of data to be encoded and the
type of linear component which is being used. CC-B can encode up to
338 numeric digits or an alphanumeric string of shorter length. To
select CC-B use <FONT FACE="Courier">--mode=2</FONT>.</P>
<P ALIGN=LEFT><IMG SRC="ccb.png" NAME="graphics2" ALIGN=LEFT WIDTH=166 HEIGHT=218 BORDER=0><BR CLEAR=LEFT><BR><BR>
</P>
<P ALIGN=LEFT><A NAME="CCC"></A><FONT SIZE=5><B>5.3.3 CC-C</B></FONT></P>
<P ALIGN=LEFT>This system uses PDF417 and can only be used in
conjunction with a GS1-128 linear component. CC-C can encode up to
2361 numeric digits or an alphanumeric string of shorter length. To
select CC-C use <FONT FACE="Courier">--mode=3</FONT>.</P>
<P ALIGN=LEFT><IMG SRC="ccc.png" NAME="graphics3" ALIGN=LEFT WIDTH=348 HEIGHT=218 BORDER=0><BR CLEAR=LEFT><BR><BR>
</P>
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