Yaskawa MP940 - Manual (Page 179)

5.2 Part Names
5-7
5
„ Serial Port 2
Use this port to connect RS-422/485.
Multiport Connections to External Devices
The following example shows the multiport connection of external devices to serial port 2.
Connector Pin Arrangement and Signal Names
The following table lists the serial port 2 connector pin arrangement and signal names.
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
External
device
External
device
External
device
External
device
No.
Signal
Name
Remarks No.
Signal
Name
Remarks
1 TX + Transmit data positive
side 8 TX + Transmit data positive
side
2 TX - Transmit data negative
side 9 TX - Transmit data negative
side
3 RX + Receive data positive side 10 RX + Receive data positive side
4 RX - Receive data negative
side 11 TXR Transmit data terminat-
ing resistance
5 12
6 RX - Receive data negative
side 13 VCC Power supply (+5 V)
7 RXR Receive data terminating
resistance 14 GND Signal ground
PORT2