Communication
48
Via NMT State Response service, the CNs signal their states to
the MN. IdentResponse Service is used by the MN to identify
configured but unrecognized CNs at system start-up or after loss
of communication. See
Appendix: IdentResponse Frame
for more
information.
The StatusResponse Service is used by the MN to query the
current status of CNs that are not communicating isochronously. It
is used for error signaling in runtime. If an error occurs, the EN
(Error New) flag in the PRes frame is toggled. This notifies the MN
that an error has occurred and the MN polls the CN for a
StatusResponse that includes error information. A list of active
and historical error events can be read using SDO from object
0x1003.
Error entry specification
* See Ethernet POWERLINK Communication Profile Specification, version
1.1.0.
** See the error code table in appendix Emergency messages, DS301 &
DS402.
*** All bytes are set to zero.
Byte
0
1
2
3
4
5
6
7
8
9
Entry type*
Error code** Time stamp (Not used***)
Byte
10
11
12
13
14
15
16
17
18
19
Time stamp
Additional information (Not used***)
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