ABB REPL-01, Руководство пользователя

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Communication
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NMT_GS_COMMUNICATING
NMT_CS_NOT_ACTIVE
This is a non-permanent state that allows a starting node to
recognize the current network state. Timeout for SoC, PReq,
PRes and SoA frames trigger the device to enter state
NTM_CS_BASIC_ETHERNET.
The NMT_CS_PREOPERATIONAL states
NMT_CS_PREOPERATIONAL_1 is one of the sub-states in the
superstate NMT_CS_EPL_MODE. Transition from
NMT_CS_NOT_ACTIVE to NMT_CS_PRE_OPERATIONAL_1 is
triggered by a SoA or SoC frame being received. In this state CN
may send a frame only if the MN has authorized it to do so by a
SoA command. There is no PDO communication in this state.
Receiving a SoC frame triggers the transition from
NMT_CS_PREOPERATIONAL_1 to
NMT_CS_PREOPERATIONAL_2. In this state PReq and PRes
data may be invalid because PDO mappings may differ.
In NMT_CS_EPL_MODE, error recognition (for example, loss of
SoC or PReq) always triggers the transition to
NMT_CS_PREOPERATIONAL_1.
NMT_CS_READY_TO_OPERATE
In this state, the CN signals that it is ready to operate to the MN. It
responds to the PReq query of the MN by sending a PRes frame.
NMT_CS_OPERATIONAL
NMT StartNode command triggers the transition from
NMT_CS_READY_TO_OPERATE to the
NMT_CS_OPERATIONAL. This is the normal operating state of
the CN.
NMT_CS_STOPPED
This state is used for controlled shutdown of a selected CN while
the system is still running. In this state, the CN does not participate
in cyclic frame exchange, but it still observers SoA frames.
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