Altivar Process ATV900 - Software Overview

Presentation
NHA80945 04/2017 15
Software Overview
General
CANopen manages communication between the network devices with object dictionaries and objects. A
network device can use process data objects (PDO) and service data objects (SDO) to request the object
data from the object dictionary of another device and, if permissible, write back modified values.
 PDOs (process data objects) for real-time transmission of process data.
 SDOs (service data object) for read and write access to the object dictionary.
 Objects for controlling CAN messages:
 SYNC object (synchronization object) for synchronization of network devices.
 EMCY object (emergency object), for signaling errors of a device or its peripherals.
 Network management services:
 NMT services for initialization and network control (NMT: network management).
 NMT node guarding for monitoring the network devices.
 NMT heartbeat for monitoring the network devices.