4 network management (nmt), 1 communication phases, L-force controls | i/o system 1000 – Lenze L-force I/O System 1000 User Manual
Page 87

2.0 EN - 11/2010
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L-force Controls | I/O System 1000
Networking via CAN system bus
Network management (NMT)
7.4
Network management (NMT)
Via network management, the master is able to make status changes for the entire CAN
network.
7.4.1
Communication phases
State
Explanation
"Initialisation"
(initialisation)
After the I/O system has been switched on, the initialisation is carried out. During
this phase, the I/O system is not involved in the data transfer on the bus.
Furthermore, it is possible in every NMT state to carry out part of the initialisation or
the entire initialisation again by transmitting various telegrams (see "State
transitions"). During this process, all parameters that have already been set receive
their standard values again.
After the initialisation is complete, the I/O system is automatically in the "Pre-
Operational" state.
"Pre-Operational"
(before the I/O system is
ready for operation)
The I/O system is able to receive parameter data.
Process data are ignored.
"Operational"
(ready for operation)
The I/O system is able to receive parameter data and process data.
"Stopped"
(stopped)
Only network management telegrams can be received. Parameter data and process
data are not received.
The outputs of the modules switch to the configured state.