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Connecting a Bar Code Reader
Section 3-4
3-4-2 Setting a Bar Code Reader
After connecting a bar code reader, set the communication conditions and other
settings for it by selection from the system menu.
Settings at the NT31/NT31C
At the NT31/NT31C, set the communication conditions for communication with
the bar code reader by using the memory switches, selecting from the options indi-
cated in the table below.
For more detailed information on the actual system menu operations, refer to 6-10
“Setting the Bar Code Reader Input Function” (page 209).
Item Possible Settings Default Setting
Data bits 7 or 8 bits 7 bits
Stop bit(s) 1 or 2 bits 2 bits
Parity None, odd, even Even
Communications speed 4800, 9600, 19200 bps 9600 bps
Input Method Manual, Auto Manual
Settings at the Bar Code Reader
Make the settings shown in the table below at the bar code reader. Make sure that
the communications speed, parity, stop bit, and data bit settings match the com-
munication settings made at the NT31/NT31C. For details on the setting method,
refer to the instruction manual for the bar code reader used.
Item Possible Settings
Communications speed 4800, 9600, 19200 bps
Parity EVEN, ODD, NONE
Stop bits 1 or 2 bits
Data bits 7 or 8 bits
Preamble STX
Postamble ETX
RS/CS control Available
Communication protocol No-protocol mode
Transmission of number of bar code label digits Transmission prohibited
Transmission of ID characters Transmission prohibited
Bar code types Multi-reading (all types can be read)
Trigger switch setting Automatic reading mode
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