Yaskawa MP940 Reference Manual - Manual (Page 99)

Serial Transmission Function MotionSuite™ MP940 Machine Controller Reference Manual
4-8
Connection of Serial Port 1 (RS-232C)
The following is an example of connecting serial port (RS-232C):
Serial Port 2
This is the port used in RS-422/485 connection.
An example is given of branch connection of peripheral devices with serial
port 2.
TxD 1
GND 14
RTS 12
CTS 6
RxD 3
2 RxD
3 TxD
5 GND
7 RTS
8 CTS
6 DSR
4 DTR
MP940 PC
Shield to case
BAT
RDY
RUN
ALM
BAT
PRT1
6
5
4
3
2
1
NO →
PRT2
RUN
INIT
TEST
FLASH
PP
COPY
PORT1
PORT2
POWER
+24V
GND
FG
LED
I/O
TX
R
X
1
2
M
E
C
H
A
T
R
O
L
I
N
K
MP940
External
Device
External
Device
External
Device
External
Device
RS-485