Control Techniques Commander SE Advanced User's Manual page 15

1.4.6 Exception codes
The following exception codes are supported:
1. Function code not supported - illegal function
2. Register address out of range or request to read too many registers - illegal data address
Parameter over range during block write 0x10
The slave processes the write block in the order the data is received. If a write fails due to an out of range value, then the
write block is terminated. However, the slave does not raise an exception response, rather the error condition is signalled to
the master by the number of successful write fields in the response.
Parameter over range during block read/write 0x17
There will be no indication that there has been a value out of range during the 0x17 access.
For detailed information on Modbus RTU protocol specification, refer to the Modicon website.
Commander SE Advanced User Guide
Issue Number: 4
15