5 rs-232c port pin assignment, Power supply bl-u1, Wiring the ok/ng output – KEYENCE BL-180 User Manual
Page 92: Input/output circuit diagram
Power Supply BL-U1
86
Wiring the OK/NG
output
Use this output to determine OK/NG status by comparing the readout data with
the preset data. It is NPN open-collector output.
Input/output circuit
diagram
Input circuit
Output circuit
1.5
RS-232C port pin assignment
COM
OK
NG
Load
Load
+
*Rated load: 30 V max. (100 mA)
TIM
2.4
K
Ω
3.3K
Ω
Internal circuit
Load
OK/NG
COM
+
Internal circuit
Pin No.
Symbol
Description
Signal
direction
1
Shield
Shield
——
2
SD (TXD)
Send data through RS-232C
Output
3
RD (RXD)
Receive data through RS-232C
Input
4
RS(RTS)
Request to send data through RS-232C
(Always ON)
Output
5
CS(CTS)
Enable to send to RS-232C
Input
6
DR(DSR)
Connect to pin 20 internally
Input
7
GND(SG)
Signal Ground
——
20
ER(DTR)
Connect to pin 6 internally
Output
13
25
1
14
D-sub 25-pin connector (female)
DTE specification (defined as terminal)
N 2.6 screw (female)