YASKAWA JEPMC-MP2300-Y Series User Manual page 239

( 3 ) Connector Pin Arrangement
[ a ] PORT Connector
The PORT connector is used to connect the MP2300 to computers and HMI devices via an RS-232C
connection.
[ b ] RS422/485 Connector
The RS422/485 connector is used to connect the MP2300 to computers and HMI devices via an
RS422/485 connection.
Terminator
Always keep the communication cable separate from the drive, control, power supply, and other transmission
systems.
The maximum length of RS422/485 is 300 m. Keep all cables as short as possible.
The 217IF-01 Module's RS422/485 interface is not an isolated system. Noise from connected terminals may
cause malfunctions. If malfunctions occur, use a shielded cable, modem, or other measure to reduce noise.
For RS422 connections, add terminator to the reception terminal if required.
For RS485 connections, add terminator to the nodes at both ends of the transmission line.
Pin Signal
Number Name
1 FG Frame ground
2 SD Send data
3 RD
Receive data
4 RS
Ready to send
5 CS
Clear to send
Pin Signal
Number Name
TX+
1 Transmission data +
TX−
Transmission data −
2
RX+
3 Reception data +
RX−
4 Reception data −
− −
5
RX−
6 Reception data −
Reception data
RXR
7
terminator
7
RXR
3,10
RX(+)
4, 6
RX(-)
11
TXR
1, 8
TX(+)
2, 9 TX(-)
4.5 Communication Module (Optional) Connections
Pin
Description
Number
6
7
8
9
Pin
Description
Number
8
9
10
11
12
13
14
Terminator has been included, as shown in the
following diagram. If you need to add terminator,
connect RXR to RX (-) and TXR to TX (-).
Leave RXR and TXR open if not adding terminator.
Signal Name Description
− −
SG Signal ground (0V)
− −
ER
Data terminal ready
Signal
Description
Name
TX+
Transmission data +
TX−
Transmission data −
RX+ Reception data +
Transmission data
TXR
terminator
−
−
VCC
Power supply (+5 V)
GND
Ground
4-65