User`s guide

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CHAPTER 8 - CFW-08 OPTIONS AND ACCESSORIES
Query (Master)
Field
Value
Slaveaddress
01h
Function
06h
Register (high)
00h
Register (low)
32h
Value (high)
00h
Value (low)
00h
CRC-
28h
CRC+
05h
Response (Slave)
Field
Value
Slaveaddress
01h
Function
86h
Error Code
02h
CRC-
C3h
CRC+
A1h
8.25.4.1
Error Messages
When any error occurs in the message content (not during
the datatransfer), theslave must return a message indicating
the error type that occurred. The errors that may occur in the
CFW-08 during the message processing are errors relating
to invalid function (code 01), invalid data address (code 02)
and invalid data value (code 03).
The messages sent bythe slave have following structure:
Response (Slave)
Slaveaddress
Function code
(with most significant bit to 1)
Error code
CRC-
CRC+
Master requests to the slave at address 1 to write in the
parameter 50 (inexistent parameter):
Table 8.32
- Message error example
Table 8.31
- Error message structure