Manual

Chapter 2 Connection and Installation
2
16
24 VDC
+
+–
24V DC IN
24 VDC
+
+–
24V DC IN
N.C. N.C. N.C.
CAUTION
D-sub 9-pin (male)
DCE specification (defined as terminal)
#4-40 screw (female)
12 345
6789
POWER SD RD
READER
2.3 Wiring the KEYENCE Power Supply Unit BL-U2/N-42
To use the BL-U2/N-42, connect as indicated below.
2.3.1 Connecting the power supply
Connect BL-U2/N-42 to a 24 VDC power supply.
BL-U2 N-42
Make sure that the power supply provides 24 VDC. If the power supply output
is not 24 VDC, it can damage the unit.
Note: If the power supply is UL rated, it must provide Class 2 output.
2.3.2 Connecting the BL-700 to BL-U2/N-42
Connect the BL-700 to the READER port of the BL-U2/N-42.
■ READER port pin assignment
Note: Do not extend a power cable. A long power cable can cause a voltage drop,
preventing the BL-700 from starting properly.
Pin No. Symbol Function Signal direction
1 TIM Trigger input Output
2 RD (RXD) Receives RS-232C data Output
3 SD (TXD) Sends RS-232C data Input
4OK OK signal Input
5 GND (SG) Ground (Common ground for respective signal) —
6NG NG signal Input
7 RS (RTS) Ready to send RS-232C data Input
8 CS (CTS) Request to send RS-232C data Output
9 +5 V 5 V power supply output Output