NCR 7870 manual Scanner or Scanner/Scale Format

7-50 Chapter 7: Programming

With 497-0301951 and higher, the default is 10 milliseconds minimum delay between messages.

Messages can be delayed by the following times.

•0 for no delay

•1 for a 10 ms delay

•2 for a 50 ms delay

Scanner or Scanner/Scale Format

The Scanner or Scanner/Scale Format option permits you to force the data format to either scanner only format or scanner/scale format to accommodate the host terminal. For example, in a dual-cable system, the scanner data and the scale data are normally sent over separate cables in a format designed for each device (scanner or scale). In some circumstances a host terminal may not be able to handle the normal format sent to it. In that case, selecting one of these options permits you to use the other format.

The Model Number option in the Scale Parameters section overrides this option. If you program this option, do it after the other parameter or return here and change it again. This option effects the address and function code in the message, but not the BCC. The choices for this option are as follows.

•4 for Scanner Only format

•5 for Scanner/Scale format

The normal (default) format for scanner only tag data messages is as follows.

•Scanner-Only Tag Data

•Message Format

Prefix Byte

Label Identifier

Tag Data

PPD

Terminator Byte

BCC Byte

Shading indicates optional information.

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