Bar Codes – 4

The Bar Codes 4 Parameter Programming Mode contains programming parameters for Code 128 bar codes. The default values are shown in the Red boxes and also in the Parameter Defaults section earlier in this chapter.

Code 128

The Code 128 parameter contains two selections: Disable and Enable. Disable reading Code 128 bar codes by scanning the Hex 0 tag and enable reading by scanning the Hex 1 tag.

Minimum Data Characters Allowed

The Minimum Data Characters Allowed refers to the Code 128 characters on a numeric only Code 128 symbol. For example, given a numeric only Code 128 symbol of 12 34 56 78, the Minimum Data Characters Allowed is 4; each Code 128 character is composed of two numeric data characters. Enter the selection by scanning the appropriate tag (Hex 1 through Hex 5). The default is three.

UCC 128

The UCC 128 option refers to the Uniform Code Council Code 128 Data Formatter Start Code. Scan the Hex 0 tag to disable this function, or the Hex 1 tag to enable it. The default is disable.

Partial Decoding

The Partial Decoding parameter permits the scanner to read damaged or poorly-printed Code 128 tags by putting together separate pieces (partials) of bar code data. Scan the Hex 0 tag to disable Partial Decoding or the Hex 1 tag to enable it.

Note:  When decoding Code 128 using partial scans, sometimes a Decode error is generated. However, several conditions must occur to cause the misread. If having problems reading Code 128 bar codes, try disabling partials.

Additional Functions

There are several other functions associated with Code 128 that are not included on the Programming Worksheet. Following are the programming sequences for these functions. Default values are shown in Blue type.

Code 128 Tone

This parameter permits you to enable or disable the Code 128 tone. If disabled, the Code 128 tone is under control of the UPC tone control (general good read tone).

Selection	Programming Tag Sequence
Disable	Programming Mode, Hex 7, Hex 0, Hex 2, Hex 0, Save and Reset
Enable	Programming Mode, Hex 7, Hex 0, Hex 2, Hex 1, Save and Reset

Tone Frequency

The Code 128 Tone Frequency (tone) can be set to one of eight different values (702 Hz through 633 Hz).

Selection	Programming Tag Sequence
702 Hz	Programming Mode, Hex 7, Hex 0, Hex 1, Hex 0, Save and Reset
781 Hz	Programming Mode, Hex 7, Hex 0, Hex 1, Hex 1, Save and Reset
868 Hz	Programming Mode, Hex 7, Hex 0, Hex 1, Hex 2, Save and Reset
961 Hz	Programming Mode, Hex 7, Hex 0, Hex 1, Hex 3, Save and Reset
1071 Hz	Programming Mode, Hex 7, Hex 0, Hex 1, Hex 4, Save and Reset
1187 Hz	Programming Mode, Hex 7, Hex 0, Hex 1, Hex 5, Save and Reset
570 Hz	Programming Mode, Hex 7, Hex 0, Hex 1, Hex 6, Save and Reset
633 Hz	Programming Mode, Hex 7, Hex 0, Hex 1, Hex 7, Save and Reset

Tone Length

The Code 128 Tone Length can be set to one of 16 different values (0 ms through 225 ms).

Selection	Programming Tag Sequence
0 ms	Programming Mode, Hex 7, Hex 0, Hex 0, Hex 0, Save and Reset
15 ms	Programming Mode, Hex 7, Hex 0, Hex 0, Hex 1, Save and Reset
30 ms	ProgrammingMode, Hex 7, Hex 0, Hex 0, Hex 2, Save and Reset
45 ms	Programming Mode, Hex 7, Hex 0, Hex 0, Hex 3, Save and Reset
60 ms	Programming Mode, Hex 7, Hex 0, Hex 0, Hex 4, Save and Reset
75 ms	Programming Mode, Hex 7, Hex 0, Hex 0, Hex 5, Save and Reset
90 ms	Programming Mode, Hex 7, Hex 0, Hex 0, Hex 6, Save and Reset
105 ms	Programming Mode, Hex 7, Hex 0, Hex 0, Hex 7, Save and Reset
120 ms	Programming Mode, Hex 7, Hex 0, Hex 0, Hex 8, Save and Reset
135 ms	Programming Mode, Hex 7, Hex 0, Hex 0, Hex 9, Save and Reset
150 ms	Programming Mode, Hex 7, Hex 0, Hex 0, Hex A, Save and Reset
165 ms	Programming Mode, Hex 7, Hex 0, Hex 0, Hex B, Save and Reset
180 ms	Programming Mode, Hex 7, Hex 0, Hex 0, Hex C, Save and Reset
195 ms	Programming Mode, Hex 7, Hex 0, Hex 0, Hex D, Save and Reset
210 ms	Programming Mode, Hex 7, Hex 0, Hex 0, Hex E, Save and Reset
225 ms	Programming Mode, Hex 7, Hex 0, Hex 0, Hex F, Save and Reset

Scans Required

This parameter sets the number of scans required to read a Code 128 bar code. Increasing the number of scans can improve reading nominal bar codes.

Selection	Programming Tag Sequence
1 Scan	Programming Mode, Hex 6, Hex B, Hex 7, Hex 1, Save and Reset
2 Scans	Programming Mode, Hex 6, Hex B, Hex 7, Hex 2, Save and Reset
3 Scans	Programming Mode, Hex 6, Hex B, Hex 7, Hex 3, Save and Reset
4 Scans	Programming Mode, Hex 6, Hex B, Hex 7, Hex 4, Save and Reset

Code 128 Minimum and Maximum Tag Length

Selection	Programming Tag Sequence
Length	Programming Mode, Hex 7, Hex 2, a, v, w, x, y, Save and Reset
	a = Length Type (0 = Range of Lengths, 1 = Specific Length) vw = Minimum Length xy = Maximum Length
Default	Programming Mode, Hex 7, Hex 2, Hex 1, Hex 3, Hex 9, Hex 3, Hex 9, Save and Reset