NCR 74 OFX (7874) - Rs232; Good Read Tone

Chapter 5: Programming 5-19
Note: Twoprogrammingtagsmustbescannedtoenablethisparameter: HexE
followedbyHex0.
RS232
RS232isusedtoconnecttheRealScan74toalmostanyRS232typeofcommunications
device.Thisprotocoluses7‐bitASCIIbydefaulttosendtagdatatothedevice.
Good Read Tone
Tone On/Off
A
Off
0
On
Tone
Frequency
(Hertz)
Tone
Volume
Tone
Length
(Milliseconds)
Not-On-File
Tone Volume
When entering Tone Frequency, the adjustment can be
incremented upward by scanning the
Hex B
tag. Each time
you scan the
Hex B
, the tone frequency increases one unit.
Scan the
End
tag or a valid Hex tag to end this mode.
When entering Tone Length, the adjustment can be
incremented upward by scanning the
Hex C
tag. Each time
you scan the
Hex C
tag, the tone length increases one unit.
Scan the
End
tag or a valid Hex tag to end this mode.
When entering Tone Volume, the adjustment can be
incremented upward by scanning the
Hex D
tag. Each time
you scan the
Hex D
tag, the tone length increases one unit.
Scan the
End
tag or a valid Hex tag to end this mode.
When entering Not-On-File Tone Volume, the adjustment can be
incremented upward by scanning the
Hex E
tag. Each time you scan
the
Hex E
tag, the tone length increases one unit.
Scan the
End
tag or a valid Hex tag to end this mode.
B
C
D
C
D
EE
1
B
22761
Your Program
Good Read Tone
1 1
Protocol

TheGoodReadToneprogrammingmodeselectstheparametersforsoundingatone
eachtimetheRealScan74successfullyreadsabarcode.Italsocontrolsthevolumeof
theNot‐On‐Filetone.Thismodecontainsfiveshortcuts:A,B,C,D,andE.After
enteringthisprogrammingmode,
proceeddirectlytoaspecificparameterby
scanningtheappropriateshortcutHextag.Thiseliminatestheneedtoenterall
parameterswhenonlyoneneedschanging.Refertothe“ParameterDefaults”section
earlierinthischapterforthefactorydefineddefaultvalueofeachprogramming
parameter.