10-26
Handling, Diagnostic and Service Functions
MPH-02, MPB-02, MPD-02
DOK-INDRV*-MP*-02VRS**-FK01-EN-P
•
S-0-0012, Class 2 diagnostics
(status parameter for drive warnings)
•
In case a drive warning occurs, the bit assigned to the warning is
set in parameter S-0-0012. A separate bit is assigned in S-0-0012
to warnings defined according to SERCOS.
Manufacturer-specific warnings cause bit 15 to be set in S-0-0012
(see also Parameter Description "S-0-0012, Class 2 diagnostics").
•
In case a drive warning occurs, bit
12 (change bit class
2
diagnostics) is simultaneously set in the status word of the field bus
(S-0-0135 in the case of SERCOS) when the content of S-0-0012
changes (i.e. at least one bit toggles).
•
The bits in parameter S-0-0012 are automatically cleared when the
warning disappears. The change bit in the status word of the
master communication (S-0-0135 in the case of SERCOS) remains
set, however, until parameter S-0-0012 has been read once.
Note:
Via parameter
S-0-0097, Mask class 2 diagnostics
warnings
can be masked in terms of their effect on the change bit.
•
S-0-0013, Class 3 diagnostics
(status parameter for drive messages)
•
Messages of the drive are listed in parameter S-0-0013. A separate
bit is assigned in S-0-0013 to messages defined according to
SERCOS (see also Parameter Description "S-0-0013, Class 3
diagnostics").
•
In the case of a drive message, bit
11 (change bit class
3
diagnostics) is simultaneously set in the status word of the field bus
(S-0-0135 in the case of SERCOS).
Note:
Each of these messages is stored in a separate parameter
(S-0-0330 to S-0-0342).
•
The bits in parameter S-0-0013 are automatically cleared when the
message disappears. The change bit in the status word of the
master communication (S-0-0135 in the case of SERCOS) remains
set, however, until parameter S-0-0013 has at least been read
once.
If the status of a bit in
S-0-0012, Class 2 diagnostics
or
S-0-0013,
Class 3 diagnostics
changes, the change bit for class 2 or 3 diagnostics
is set in the field bus status word (e.g. S-0-0135 in the case of SERCOS).
A change bit in the status word (bit 11 or 12) is always set due to a
change of the parameter content of S-0-0012 or S-0-0013. This enables
the master to recognize very quickly whether a change occurred in
S-0-0012 or S-0-0013.
A read access to one of the two parameters clears the respective change
bit again.
By means of the parameters
S-0-0097,
Mask class 2 diagnostics
and
S-0-0098,
Mask class 3 diagnostics
it is possible to mask out certain
bits in terms of their effect on the change bit of the status word (bit 12 or
bit 11).
Change Bits in Drive Status
Word
Masking the Change Bit
Courtesy
of
CMA/Flodyne/Hydradyne
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