Datalogic AMT58 Series Manual page 309

6.2.1 Initialization state
This is the first state the CANopen® device enters after power is
turned on or after a hardware reset. As soon as the basic CANopen®
device initialization is carried out, device reads and loads the
parameters saved on EPROM, sends a boot-up message and then
switches automatically to
6.2.2 Pre-operational
In this state communication between master and slave is possible
using SDO messages. They allow working parameters to be set.
Slave cannot send PDO messages.
To switch slave device to
remote node command using a NMT message.
6.2.3 Operational state
In this state slave device is active and all communication objects are
available. Slave device can use the parameters available in the
"Object dictionary" and is allowed to send process data using PDO
messages. "Object dictionary" can be accessed using SDO
messages. To switch slave device to
must send an Enter pre-operational command using a NMT
message.
6.2.4 Stopped state
In this state slave device is forced to interrupt communication with
the Master (except node guarding, if active).
Communication using PDO and SDO messages is not allowed.
To switch slave device to
must send the specific commands Enter pre-operational or Start
remote node using a NMT message.
Pre-operational
state
Operational state master must send a Start
Pre-operational
Pre-operational
AMT58x-CB CANopen®
state.
state master
or Operational state master
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