Yaskawa MP940 - Manual (Page 193)

5.3 Connection Methods
5-21
5
„ RS-485 Connection Example
1
TX（+）
2
TX（-）
11
TXR
3
RX（+）
4
RX（-）
7
RXR
14
GND
FG
MP940 PORT2
3
RX（+）
4
RX（-）
7
RXR
1
TX（+）
2
TX（-）
11
TXR
14
GND
FG
MP940 PORT2
Partner node
Connector
shell
Connector
shell
An example when
another MP940 Mod-
ule is connected is
shown below.
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
RS-485
MP940
120- Ω terminating
resistance
Terminal
device
(PLC, etc.)
Terminal
device
(PLC, etc.)
Terminal
device
(PLC, etc.)
Terminal
device
(PLC, etc.)