![LS Industrial Systems iG5A Series Скачать руководство пользователя страница 70](http://html1.mh-extra.com/html/ls-industrial-systems/ig5a-series/ig5a-series_manual_1943816070.webp)
Chapter 4. Data Communication Protocol of the CANopen
58
▶
Triggering modes
There are 3 trigger modes available for the generation of the event for PDO
transmission.
Event- and timer-driven
When the preset event time is elapsed the PDO frame is
transmitted automatically.
Remotely requested
PDO frame is transmitted when the RTR frame requesting for PDO
is received.
Synchronously triggered
PDO frame is transmitted by the preset number of the SYNC
frames.
4.2 NMT (Network Management) State Machine
This command is used by the master to control the slave devices in the
network. The figure below shows the NMT State Diagram of a CANopen
device.