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Chapter 6. Connection
6.6 Wiring diagram
1) MCU-XA2
RS 485
Interface
Devices
S.G
S.G
2 RxD
3 TxD
5
S.G
6
9
RS232C/485
EXT-ENC
*1)
A+
5V
A-
B+
B-
5V
A+
A-
B+
B-
RxD
TxD
24V
2
3
6
9
2 RxD
3 TxD
5
S.G
5
Or
Teach- Pendant
Touch- Panel
PC
TRx+
TRx-
PROTOCOL
Servo Driver
Servo Motor
MCU - XA2
23
48
24
49
11,36
25,50
1,26
2
27
3
EXT-IO
AXIS/IO
S.G
Or
Encoder
MPG
24V
Servo Driver
Servo Motor
*4)
Ext. I/O 2
TxD+
RxD+
TxD-
RxD-
FS+
FS-
CS1+
CS1-
CS2+
CS2-
RESET+
RESET-
CLK+
CLK-
Ext. I/O 1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
DC 24V
Power
24V GND
24V VCC
S.G5V
1
2
3
4
5
1
2
Power
O
I
7 * 2)
8
1* 3)
6
1
2
4
5
3
Note)
*1) Do not use other pins(4) than indicated. This pin is used by the system. Especially, the
connection between FG and GND can damage the system, so it is prohibited. Avoid connection
with the No.** 6, 9, 4 pin PC.
*2) In case of a RS485 node end, connect the termination resistor(120~220Ω).
*3) When using PLC communication using a RS232 , connect it to the pin 5(GND).
*4) When using external power, do not connect external power to the internal power pin(11/36,
25/50) of this module.
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