24
Operation
Station status 2
Table 12
This byte only contains status information data, which do not
require any actions.
Description of the individual bits:
Bit
numberDescription
0
This bit is set by the DP slave. -If the DP slave
sets this bit, it must be reconfigured, and its
parameters need to be redefined. -The bit remains
set until the slave is reconfigured.
1
When the DP slave sets this bit, the DP master
has to poll diagnostic data until the bit is unset
again. -- For example, the DP slave sets this bit
when it cannot provide valid usable data.
2
Always set to 1 by the DP slave.
3
This bit is set by the DP slave when its response
monitoring function is activated. -
4
This bit is set by the DP slave upon reception of
the Freeze control command. - -
5
This bit is set by the DP slave upon reception of
the Sync. control command. - -
6
Reserved
7
This bit is set by the DP master as soon as the DP
slave is marked as not active in the DP slave
parameter set and is disabled for cyclic
transmission. ----- The DP slave always sets this
bit to 0.
Station status 3
Reserved. Is not set by the DP slave. -
Standard diagnostic data, 4th. byte
The address of the DP master that has configured this DP slave is
written in this byte. -- If the DP slave has not been configured by a
DP master, the DP master sets this byte to the address 255
(0xFF). ---
Standard diagnostic data, 5th. and 6th. byte
The ID number of the connected DP slave is written in these two
bytes. --
Device-related diagnostic data, 7th. byte
Table 13
Description of the individual bits:
Bit Description
0 to 5Length of the device-related diagnostic data.- This value is
10 for controllers.
6 and 7Fixed to 00. Describes the additional diagnostic data as
device-specific diagnostic data. -- ID-related and
channel-related diagnostic data are not available.
Device-related diagnostic data, 8th. byte
Table 14
Description of the individual bits (texts in quotation marks are
diagnostic messages from the device database):-
MSB
LSB
Bit number
7
6
5
4
3
2
1
0
MSB
LSB
Bit number
7
6
5
4
3
2
1
0
MSB
LSB
Bit number
7
6
5
4
3
2
1
0
Bit
number -
Description
Actions to be taken
0
"I-block of slave too
small"
According to the
configuration more bytes
for input data are
requested from this DP
slave than specified in
the device database. ----
Check the slave-specific
configuration data
handed over to the DP
master and reduce the
size, if required. Usually,
this implies a change of
the slave-specific
parameter data, because
they probably contain too
many variable indices. ---
----
Bytes 12 to 16 of the
device-specific
diagnostic data contain
additional information. ---
