Code 128 Special Function Access - Microcom 412 Operator's Manual

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Chapter 8

TCI 40 selects Automatic Compression. In this mode the printer will automatically decide which

subset is most efficient and insert the appropriate shift character. It is also possible to insert

function characters and force a subset change while in Automatic Compression mode. Please

note that the printer will automatically switch to subset C if there are 6 or more numeric

character in a row. Once the even number of numeric characters have been processed, the

printer will default back to subset B. This can cause problems if a user selects subset A but

sends 6 or more numeric digits. The user may wrongly assume that the printer has remained in

subset A when it has actually switched to subset C and then to subset B.

TCI 41 is recommended for applications that require precise control of the subset switching.

This TCI provides full control of the subsets. The printer will not try to compress the data

unless the user manually enters subset C. Once in subset C, the user must send the

appropriate # sequence to return to subset A or B. Remember, this mode assumes that the

user will not violate the code 128 bar code rules by trying to use an odd number of digits or

non-numeric characters with subset C. Doing so will cause an invalid bar code to be printed.

The following format will insert a Subset C start character followed by a function 1.

^D57 

1,832 

1,100,200,30,40,,,,2,100 

^D56^D2 

#9#61234567890 

^D3 

412 Operators Manual