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Bulletin 2755
Single/Dual-Head Enhanced Bar Code Decoders
Host Message Parameters
These settings control the message format of
bar code data sent to the host.
Default No–Read String
Defines a 1 to 32 character no-read message
to include in each message sent to the host
when a no-read occurs and a specific no-read
message has not been defined for that field.
No-Read Replacement Strings
If Host Replacement Rules are active, these
strings will be substituted for the bar code
data whenever a rule fails or a no-read
occurs. This allows you to generate specific
no-read messages in response to particular
data.
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Host Message Format
Function 6 on the Select Operation menu accesses the Host Message
Format configuration screen. Use this function to configure the message
format of bar code data sent to the host.
The data is sent to the host as an ASCII string. Figure 3 shows the structure
of the string. For each field in the string, the figure shows:
The type of data in each field
length of the field (in parentheses)
Some of the fields are controlled by the bar code itself. However, most of
the fields are controlled by the host message configuration parameters. In
addition, many of these same functions can be performed using the Host
Replacement Rules described earlier in this manual.
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