KEYENCE BL-180 - Manual (Page 93)

Power Supply BL-U1
87
1.6 RS-232C port wiring
When you want to connect the BL-U1 to a PC through the RS-232C port, the wir-
ing is as shown below.
You can use the optional OP-22149 cable (1.5 m) and OP-25057 (25- to 9-pin
adapter).
1.7 RS-422A port wiring
When you want to communicate using the RS-422A port, the wiring is as shown
below. Use the BL-U1 input/output terminal block.
• Set both terminators (terminal resistance 100
Ω
) of the BL-U1 and external
unit to ON (see P. 13).
• The extended cable length must be within 1.2 km.
You can prepare an equivalent cable which meets the following specifications:
1
2
3
4
5
7
6
20
BL-U1
SD
RD
RS
CS
GND
DR
ER
1
2
3
4
5
7
6
20
PC/AT
Shield
SD
RD
RS
CS
SG
DR
ER
D-sub 25-pin (male)
M 2.6 screw
D-sub 25-pin (male)
M 2.6 screw
Item Specification
Cable type Shielded cable
Logarithm 3P
Conductor resistance (20°C) 88.0
Ω
/km or less
Insulator resistance 10,000 M
Ω
.km or more
Withdraw voltage 500 VDC/minute
Static capacity (1 kHz) 60 nF/km or less (average)
Characteristic impedance (100 kHz) 110 ± 10
Ω
SDA
SDB
RDA
RDB
GND
BL-U1
RDA
RDB
SDA
SDB
SG
Shield
Twisted pair cable
External unit