Leadshine CS2RS-D503 - Error Codes and Troubleshooting; Communication Error Codes

CS2RS Series Modbus RS485 Closed Loop Stepper Drive User Manual
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4.4 Error Codes and Troubleshooting
4.4.1 Communication Error Codes
When the master station receives a message from the slave about a communication error, you can follow the table below for
analysis
No.
Return Commands (slave->master)
Symbols
Description
Content
1
ID
Slave ID
0-31
2
FC
Function code
FC+0x80
3
EC
Error Code
-
4
CRC
check code
Low
High

Error Code
Error Code (EC)
Description
0x01
Wrong FC (This supports FC beside of 03h/ 06h/ 10h)
0x02
Wrong access address
0x03
Wrong data, for example, write data over-limit value, etc.
0x08
Wrong CRC check code
Example F: CRC check code error
Master-> slave data:
Message
01
03
00 01
00 01
D5 C1
Description
Slave ID
Function code
Register address
Read Number of registers
CRC check code
slave-> Master data:
Message
01
83
08
40 F6
Description
Slave ID
FC+0x80
Error code
CRC
Example F: Function code error
Master-> slave data:
Message
01
02
00 01
00 01
E8 0A
Description
Slave ID
Function code
Register address
Read Number of registers
CRC check code
slave-> Master data:
Message
01
82
01
81 60
Description
Slave ID
Function code + 0x80
Error code
CRC check code