Metrohm tiamo 2.2 (ProcessLab) - Manual (Page 1489)

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tiamo 2.2 (ProcessLab) ￭￭￭￭￭￭￭￭ 1473
7.18 Barcode reader
7.18.1 Barcode reader - General
A barcode reader is used to enter sample and other data in tiamo.
Note
A barcode reader only needs to be configured as a device in tiamo if the
functions for automatic data import into sample tables are to be used. If
a USB barcode reader not configured as a device is connected to the PC,
it will be recognized (in the same way as a keyboard) as being an HID
(Human Interface Device) that can be used for data entries in all fields.
Barcode reader as device
Note
If the functions of a barcode reader for automatic data import into sample
tables are to be used, then it must be added to tiamo as a device and
configured in such a way that during each data transfer the following
preamble and postamble check characters are also transmitted:
Preamble #1: 02hex (^B, STX)
Preamble #2: 02hex - 09hex (different identification code 02hex -
09hex for each barcode reader connected)
Postamble #1: 04hex (^D, EOT)
Finish:
Refer to the barcode reader manual for instructions regarding its config-
uration.
Barcode reader as HID
Note
If a barcode reader is to be used as HID it must be configured in such a
way that it does not transmit any preamble check characters.
Refer to the barcode reader manual for instructions regarding its config-
uration.