KEYENCE LT-9001 Series - Manual (Page 132)

8-2
Specifications
EIA RS-232C compliant (Modem definition)
Refer to "RS-232C Interface" (page 6-2) for setting communication specifications.
Use the dedicated cable OP-96368 + OP-26401 (9-pin D-sub) or OP-96368 + OP-96369 (25-pin D-sub) for
connection.
Refer also to the instruction manual of PLC link unit when connecting to the external devices.
Connecting to External Devices
Communication Specifications
Pin Layout
E LT-9001-IM
RS-232C
8
Chapter
6 5 4 3 2 1
Matching connector :
Modular 6-pin plug
connector
Communication method Full duplex
Synchronization Start-Stop
Transmission code ASCII
Data length 7/8 bit
Stop bit length 1/2 bit
Parity check None/Even/Odd
Baud rate 9600/14400/19200/38400/57600/115200 bps
Data delimiter CR
Flow control None
Pin No. Signal Description
1 (not used) –
2 ( not used) –
3 SD(TXD)
Receives signal from the
external devices (input)
4 SG(GND) GND
5 RD(RXD)
Transmits signal to the external
devices (output)
6 (not used) –
* Do not use the unused terminals. It may lead to breakdown
of the unit.
SD(TXD) SD(TXD)
RD(RXD)
SG(GND)
RS(RTS)
CS(CTS)
DR(DSR)
CD(DCD)
ER(DTR)
RD(RXD)
SG(GND)
PC side
LT side
Signal
name
OP-96368
+
OP-26401
OP-96368
+
OP-96369
Connection diagram