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•= If an error occurred during the read or write request, this will be indicated to
the master by Resp1:Resp0 changing from 0:0 to 1:1. The parameter
number response (12 bits) will equal the parameter number that the master
was attempting to access, and an error code reflecting the failure cause will
be placed in the data / error code response word. For a list of possible error
codes, refer to section 10.4.
6. In order to perform another parameter read or write, the master must once again
send a “no action” code (Req1=0 and Req0=0), and the drive must once again
respond with an idle state acknowledge (Resp1=0 and Resp0=0) before the next
read or write action can take place. Until a “no action” code is sent to the drive,
the drive will ignore all data in the Parameter number / action word and
Parameter write data word. Also, as long as the master sends the “no action”
code, the drive will loop-back in the parameter number / action response word
and parameter data / error code response word whatever data is sent to it in the
corresponding output words.
10.4
10.410.4
10.4
Register Access Error Codes
Register Access Error CodesRegister Access Error Codes
Register Access Error Codes
When a parameter read or write error occurs, one of the following error codes will be
returned in the Parameter data response word (offsets 14 and 15 of the input data
structure):
Error Code
Meaning
0x0001................ cannot execute
0x0002................ data error (written data value outside of valid range)
0x0003................ invalid register
0x0004................ attempt to write to a read-only register
0x0005................ attempt to read from a write-only register
0x0006................ other / unclassified error