Yaskawa MP940 User Manual
Page 194

System Startup
5.3.3 Serial Port Connector Pin Arrangements and I/O Circuits
5-22
Note: For the port 2 interface, the terminating resistance activated by con-
necting 2 to 11 and 4 to 7.
TX/RX
TX/RX
TX/RX
1
TX(+)
2
TX(-)
11
TXR
3
RX(+)
4
RX(-)
7
RXR
14
GND
MP940 PORT2
FG
①
②
TX
(
-)
TX
(
+)
RX
(
-)
RX
(
+)
9
8
4
3
①
②
GND
GND
GND
TX
(
-)
TX
(
+)
2
1
RX
(
-)
RX
(
+)
6
10
Connector
shell
Connector
shell
Connector
shell
Shield
120-
Ω
terminating
resistance
An example when the
MP940 Module is
connected in the mid-
dle of the connection
is shown below.
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