NCR RealScan 7875-7000/8000 Installation Guide
06/03 AIP-00342 Release B
16 of 56
Set the Communications Protocol Switch
Before setting the RealScan 7875 into the cutout in the checkstand, verify that the
Communications Protocol Switch is properly set. Single cable units have one switch, dual cable
units have two. The switches are located on the Interface Board and you can access them
through holes in the side of the unit. For RS-232 communications, both switches must be toward
the front (operator side) of the unit. For all other communication protocols, both switches must
be toward the back (customer side) of the unit.
20789
AUX PORT/
DATACHKR
SCANNER
DATACHKR OCIA/IBM
RS-232 RS-232
Make sure power is
off before changing
switch setting
Switches
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