Microcom 412 - Manual (Page 79)

Chapter 8 Bar Codes
412 Operators Manual 71
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.
Code 128 Special Function Access
# Value CODE A CODE B CODE C
#0 96 FNC3 FNC3 -----
#1 97 FNC2 FNC2 -----
#2 98 SHIFT SHIFT -----
#3 99 CODE C CODE C -----
#4 100 CODE B FNC4 CODE B
#5 101 FNC4 CODE A CODE A
#6 102 FNC1 FNC1 FNC1
#7 103 START ----- -----
#8 104 ----- START -----
#9 105 ----- ----- START
## 3 # # -----
Table 11
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