KEYENCE N-400 User Manual
Page 14
Chapter 1 Overview of The N-400
1
7
Terminator switch
1
READER port
3
I/O terminals
4
RS-485 terminals
5
Power supply terminals
2
POWER LED
6
Communication
status indicator
LEDs
ON
OFF
POWER
SD
RD
READER
No. Name
Function
1
READER port
Connect the BL series to this port.
2
POWER LED
Lit when power is ON.
3
I/O terminals
Includes the trigger input terminal and OK/NG output
terminals.
4
RS-485 terminals
Used for multi-drop link mode.
5
Connect a 24 VDC power supply to these terminals.
6
Allows you to monitor the communication status of the
READER port.
SD: Lit when the BL series is sending data.
RD: Lit when the BL series is receiving a command.
7
Terminator switch
Turns the terminator ON/OFF.
Power supply terminals
Communication status
indicator LEDs
N-48
Note: BL-U1 is not available in the Europe area.
6