KEYENCE N-400 - Manual (Page 13)

Chapter 1 Overview of The N-400
1
SD RD
SD
TERMINATOR
RD
CS RS
TEST
RS-232C
RS-455
POWER TIMING
N-400
ON
OFF
ON
OFF
1 Display LEDs
6 Power supply terminal
7 RS-485 terminal
8 Trigger input terminal
2 RS-232C port
3 Communication
status indicator LEDs
4 Test switch
5 Terminator switch
No. Name Function
1 Display LEDs • Normally displays “00” (ID number of the N400).
• Displays the ID number of the device being tested.
( ➮ See p. 26.)
• Displays “S1 (51)” to indicate setup mode.
( ➮ See p. 75.)
• Displays “S0 (50)” to indicate initial communication status
after a setting change. ( ➮ See p. 48.)
• Displays the N-400’s error condition. ( ➮ See 131.)
• Displays the ID number of the device currently connected
when sending a hotline command. ( ➮ See p. 73.)
2 RS-232C port • Connect a host computer or PLC to this connector.
3 • POWER: Lit when power is ON.
• TIMING: Lit when the trigger input connected to the N-400
is ON.
(For the RS-232C connections)
Lit when the SD, RD, RS and CS signals are ON.
(For the RS-485 connections)
SD: Lit when the N-400 is sending data.
RD: Lit when the N-400 is receiving data.
* Both the SD and RD indicators are lit when the N-400 is
receiving data.
4 Test switch Starts the connection test mode.
5 Terminator switch Switches the terminator’s ON/OFF status.
6 Power supply terminal Connect a 24 VDC power supply.
7 RS-485 terminal Used for the multi-drop link connection.
8 Trigger input terminal Used for trigger input in multi-head scan mode.
1.3 Part Names
N-400
Communication
status indicator LEDs
5