Microcom 438TM, Operator'S Manual

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Chapter 8 Bar Codes
438TM Operator’s Manual - 880049-0113 8-15
Edifact Encoding Scheme
X12 encoding scheme includes 63 ASCII values (values from 32 to 94) plus an Unlatch
character (binary 011111) to return to ASCII encoding. Edifact encoding encodes four data
characters in three codewords.
Codeword Data and/or Function
1 - 128 ASCII data (ASCII value +1)
129 Pad Character
130 - 229 2 digit data 00 – 99 (Numeric Value + 130)
230 Latch to C40 Encoding Scheme
231 Latch to Base256 Encoding Scheme
232 FNC1
233 Structured Append
234 Reader Programming
235 Upper Shift (shift to Extended ASCII)
236 05 Macro
237 06 Macro
239 Latch to Text Encoding Scheme
241 ECI Character
Table 8-6 ASCII Codeword Values
Barcode ID
The printer is able to print two different unique Data Matrix barcodes per format and this
parameter is used to select which formatting data is being used. The valid parameters are a
0 or a 1. To printer the proper barcode, the CGN field must also reflect a 0 or 1 to match the
Barcode ID field. The CGN default is a 0 so if only one barcode is present and the Barcode
ID is a 0, nothing has to be entered as the CGN.
Data
Data to be converted to 2D Data Matrix Barcode, maximum number of characters supported
in the printer implementation is 1000.