KEYENCE N-400 - Manual (Page 18)

Chapter 2 Installation Procedure
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2.1 Installing the N-400
■ Equipment used
• N-400 multi-drop controller
• BL series bar code readers
The N-400 can be connected to the BL-700, BL-500 and BL-180 series bar
code readers.
• N-48 (or BL-U1) power supply unit for BL series (RS-485 mode)
Each bar code reader requires one N-48 (or BL-U1) power supply.
• BL-U2 (or BL-U1) power supply unit for BL series (RS-232C mode)
To change the BL series’ settings, one BL-U2 or BL-U1 power supply unit is
required.
To use the N-48 for multi-drop link, an additional BL-U2 24 VDC power supply
unit is required. (The N-48 does not provide an RS-232C port.)
(The BL-U1 can be used as an RS-232C or RS-485 power supply.)
• RS-232C cable for the N-400
This cable is used to connect the N-400 and the host computer.
Use a cable appropriate for the personal computer and the PLC’s pin assign-
ment. OP-98769 cable and OP-25057 connector are available.
• RS-232C cable for BL series setup
This cable is used to connect the BL-U2 (or BL-U1) and the host computer to
change the BL series’ settings. Since the wiring of this cable is different from
that of the RS-232C cable for the N-400, both cables must be prepared.
For wiring the BL-U2 and BL-U1, see the “BL-U2 Instruction Manual” and “BL
series User’s Manual”, respectively.
OP-27937 cable is available for BL-U2. (OP-22149 cable and OP-25057 are
available for BL-U1.)
• Twisted pair cable for the RS-485
Prepare the recommended cable.
( ➮ See pp. 19, 20 and 25.)
• Host computer
Use a personal computer with an RS-232C port.
When large quantities of data are sent from several BL series, they may exceed
the host computer’s data processing capacity.
If this occurs, reduce the number of the connected BL series units, or enhance
the data processing capacity (including the programming language) of the host
computer.
■ Setup and connection
1) Setting the BL series bar code readers
Prepare the BL series unit, the BL-U2 (or BL-U1) RS-232C power supply unit,
the RS-232C cable used for setup, and a personal computer. Set up the BL
series using the BL series setup software.
For connection and setup procedures, see the “BL series User’s Manual”.
For the pin assignment of the connection cable between the BL-U2 and the host
computer, see the “BL-U2 Instruction Manual”.
The setting contents vary slightly depending on the mode being used. Refer to
the following pages for more information.
• Multi-drop link mode: p. 60
• Multi-head scan mode: p. 87