9.5 Return codes at parameter accesses
If a parameter of the object dictionary is accessed (reading or writing) a feedback is sent
by the KEB device.
In the case of a read access, this feedback contains the read parameter value.
Regardless of the access type, a return code is sent in each return message. This return
value contains status information about the process of the parameter access.
For requests via the diagnostic interface, the return code is a KEB-specific value. The
possible values are described below.
The KEB specific return code is converted into a fieldbus specific value for SDO requests
via the fieldbus interface. The fieldbus-specific values are described in the Programming
manual | Fieldbus systems.
The following KEB specific return codes are possible:
Return code 0: OK
The request was successful.
Return code 1: Device not ready
The request was not answered within the timeout time.
Return code 2: Invalid address or password
The requested parameter is not supported by the device or the adjusted password level is
not sufficient for the request.
Return code 3: Invalid data
Occurs only with write requests. The written value is outside the parameter limits. Not all
values within the parameter limits are valid for some parameters, e.g. ec16 encoder type.
In this case the invalid values are also acknowledged with return code 3.
Return code 4: Parameter read only
A write request to a write protected parameter is acknowledged with this return code.
Return code 5: BCC-error
The BCC check has detected an error.
Return code 6: Device busy
The request cannot be processed at the moment. The device processes a previous re-
quest with extensive background routine, after which further requests are accepted again.
Requests that are acknowledged with return code 6 should be repeated.
Return code 7: Invalid service
The requested service is not supported by the device. The supported services are listed
in de10 operator config data subindex 5 and 6.
Return code 8: Invalid password
The adjusted level is not sufficient for the request.
Return code 9: Telegram-framing error
The checked telegram has either too few or too many characters.
Return code 10: Transmission error
A parity or overrun error was detected.
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