10-106
Handling, Diagnostic and Service Functions
MPH-02, MPB-02, MPD-02
DOK-INDRV*-MP*-02VRS**-FK01-EN-P
Errors in the Case of SIS Communication
Errors During Parameter Transmission
If an error occurs during the parameter transmission, an "error during
parameter transmission" is signaled in the status byte.
The first two bytes of the useful data transmit an error code that describes
the kind of error.
During the parameter transmission the following errors can occur:
Error code
Description
0x0000
no error
0x0001
service channel not open
0x0009
invalid access to element 0
0x8001
"Service channel currently occupied (BUSY)"
The desired access is currently impossible
because the service channel is occupied.
0x8002
"Failure in service channel"
It is currently impossible to access the desired
drive.
0x800B
"Transmission canceled (higher priority)"
0x800C
"Unauthorized access (service channel still
active)"
A new request is started before the last
transmission was completed.
Fig. 10-81: Error messages in the serial protocol
Execution and Protocol Acknowledgment
With each reaction telegram a status byte is transmitted. The status byte
provides the result of a transmission in the form of a code number.
In general, the following applies:
Result of the transmission
Code number in the status byte
transmission without error
0x00
Protocol error
0xF0 … 0xFF
Execution error
0x01 … 0xEF
Fig. 10-82: Definition of the status byte
Protocol error
Code
number
Description of error
invalid service
0xF0
The requested service is was not
specified or is not supported by
the addressed node.
Fig. 10-83: Definition of the protocol error
Execution error
Code
number
Description of error
error during parameter
transmission
0x01
When reading or writing a parameter
an error occurred.
Fig. 10-84: Definition of the execution error
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