Kinco FD5P AC series servo
0008
:
data bit=8, stop bit=1
,
No parity
check
0009
:
data bit=8, stop bit=2
,
No parity check
10.2.3 MODBUS RTU communication protocol
FD5P servo drive supports MODBUS RTU communication protocol, and its internal objects are
discontinuous 16-bit data registers (mapped to 4X when read and written by the Kinco servo+).
Table 10-4 Basic format of Modbus RTU communication protocol
Note: The starting message interval should be no less than 3.5 characters.
The brief introduction of Modbus common function codes is as follows:
Function code 0x03: read data register
Request format:
Correct response:
If a response error such as the address does not exist, the returned function code is
0x81
Example:Sending message
01 03 32 00 00 02 CA B3
Message meaning:
01
——
ID
No. ;
03——Function code,read data register;
32 00
——The modbus address of the servo read-only object "status word" 60410010;
00 02
——Read the number of word data;
CA B3——Check code。
Function code 0x06: write single data register
Request format
Response format: If the setting is successful, the original text will be returned.
If the written data is out of range, the address does not exist, and the response to read-
only data operations is wrong, the returned function code is
0x86
.
Example:Sending message
01 06 31 00 00 0F C7 32