Communication extension card
-20-
Initializing
Initializing
Reset
application
Reset
communication
Stopped
Pre-operation
Operation
(1)
(15)
(16)
(2)
(11)
(10)
(9)
(12)
(13)
(14)
(7)
(5)
(4)
(3)
(6)
(8)
Figure 3-3 NMT state diagram
Table 3-2 NMT state transition
State transition
Required triggering event
(1)
Automatic initialization after power-on
(2)
Automatic change after initialization
(3), (6)
Command of the NMT master station for starting a
remote node
(4), (7)
Command of the NMT master station for entering
the pre-operation state
(5), (8)
Command of the NMT master station for entering
the stopped state
(9), (10), (11)
Command of the NMT master station for resetting a
remote node
(12), (13), (14)
Command of the NMT master station for resetting a
remote node communication parameter
Different services are supported in different states, as described in
Table 3-3 Services supported in various NMT states
Service
Pre-operation
state
Operation
state
Stopped state
PDOs
No
Yes
No
SDOs
Yes
Yes
No
SYNC packets
Yes
Yes
No
Emergency packets
Yes
Yes
No
Network management
Yes
Yes
No
Error control
Yes
Yes
Yes
