Kinco FD5 Series - 10.2 RS485 Communication; 10.2.1 RS485 hardware wiring; 10.2.2 RS485 communication parameters; 10.2.3 MODBUS RTU communication protocol

Kinco FD5 AC series servo driver user manual
Chatper 10 Communication
123
10.2 RS485 Communication
10.2.1 RS485 hardware wiring
The RS485 port of FD5 series servo driver supports MODBUS communication function, which can be used to modify the
internal parameters of the servo and monitor the servo state. The communication line of the master station is connected to the
X4A(IN) and the X14B(OUT) is connected to the next slave station device. Figure 10-2 show the cable connections.
Table 10-2 RS485 Communication port description
Pin
Signal mark
Signal name
4
TX-
Negative of data sending
5
TX+
Positive of data sending
Figure 10-2 RS485 signal wiring
10.2.2 RS485 communication parameters
Table 10-3 RS485 communication parameters setting
LED display
Internal address
Name
Meaning
Default
d5.01
100B0010
ID_Com Station No.
Drive station ID. To change this parameter, save it with
d5.00 and restart it.
1
d5.18
2FE20010
RS485 baud rate
Used to set the baud rate of RS485
value baud rate
1080————9600
540————19200
270————38400
90————115200
Note: need to save and restart.
540
d5.19
65100C08
RS485 protocol
selection
0
：
use Modbus communication protocol
1
：
use RS232 communication protocol
Note: need to save and restart
。
0
65100E10
RS485 Mod
0008
：
data bit=8, stop bit=1
，
No parity check
0009
：
data bit=8, stop bit=2
，
No parity check
0008
10.2.3 MODBUS RTU communication protocol
FD5 servo driver supports MODBUS RTU communication protocol, and its internal object is a discontinuous 16-bit data
register (mapped to 4X when it is read and written by the upper computer).
Table 10-4 Modbus RTU communication protocol basic format
Target station
Function code
data
CRC check code
1 Byte
1 Byte
N Byte
2 Byte
Note: The starting message interval should be no less than 3.5 characters.