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7-20 Chapter 7: Programming
Timers
The Timers programming mode controls the two NCR 7875
Scanner/Scale timers: Lockout Time and Active Time.
Defaults
Parameter Default Value
Lockout Time 900 milliseconds
Restart Lockout Timer Off
Active Time 15 seconds
Specific Program Parameters
Lockout Timer (Milliseconds)
The lockout timer prevents the scanner/scale from repeatedly reading
the same bar code. After reading a bar code, it must be removed from
the scan pattern and the time programmed in the lockout timer must
elapse before the scanner/scale can read the same bar code again. The
Lockout Time parameter selects the lockout time.
There are 8 different times ranging from 450 milliseconds to
1500 milliseconds in increments of 150 milliseconds. Select these times
using the Hex 0 through Hex 7 tags. The default time is
900 milliseconds.
Restart Lockout Timer
The Restart Lockout Timer parameter controls restarting the
lockout timer each time the scanner/scale reads the same bar
code. Turning on the Restart Lockout Timer option has the
following effect. After reading a bar code, if the bar code
moves out of the scan pattern and then back into the scan
pattern before the lockout timer times out, the lockout timer
restarts. The Hex 0 tag turns off this option and the Hex 1
tag turns it on. The default is off.