Deep Sea Electronics Plc 5220

55xGenComm1_29
15
Extended exception codes
Exception
code
Extended
exception code
Extended exception name Notes
N/A 0 No error The last function
completed successfully.
1 1 Function not defined The function requested is
not defined in this
standard and is not
recognised as a
manufacturer specific
function, no actions were
taken
1 2 Function not implemented The function is defined in
this standard but not
implemented on this slave
device, no actions were
taken. This will currently
never be returned as both
functions 3 and 16 must
be implemented.
2 3 Register not defined The register specified is
not defined in this
standard and is not
recognised as a
manufacturer specific
register, no actions were
taken
2 4 Register not implemented The register specified is
defined in this standard
but not implemented on
this slave device, no
actions were taken. This
will never be returned by
function 3 as all defined
registers must return an
‘unimplemented’ value,
see the description of
function 3 below. It may
be returned by function 16
if a defined register is not
implemented.
2 5 Read from a write only register An attempt was made to
read a write only register,
no actions were taken..