Communication extension card
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Chapter 3
CANopen communication card
3.1
Overview
1.
Thanks for choosing ASTRAADA CANopen communication cards. This manual describes the function
specifications, installation, basic operation and settings, and information about the network protocol.
To ensure that you install and operate the product properly, read this manual and the communication
protocol section in the VFD operation manual carefully before you use the product.
2.
This manual only describes how to operate the CANopen communication card and the related
commands but does not provide details about the CANopen protocol. For more information about the
CANopen protocol, read the related specialized articles or books.
3.
This communication card is defined as a CANopen slave station communication card and is used on a
VFD that supports CANopen communication.
4.
The CANopen communication of this communication card supports access to VFDs through process data
objects (PDOs) and service data objects (SDOs). PDOs and SDOs are used to read the object dictionary
defined by the manufacturer.
3.2
Features
1.
Supported functions
➢
Supports the CAN2.0A protocol.
➢
Supports CANopen DS301.
2.
Supported CANopen services
➢
PDO: Supports four pairs of PDO services (PDO1 TX to PDO4 TX, and PDO1 RX to PDO4 RX), where
the PDO1 pair is used to read and write parameters of a VFD, and the PDO2 to PDO4 pairs are used
to control and obtain the actual parameter values of the VFD in real time.
➢
SDO: SDO information adopts the "client/server" mode and is used to configure slave nodes and
provide access to the object dictionary of each node.
➢
Supports the emergency service.
➢
Supports node protection (NMT Node Guarding).
➢
Supports heartbeat packets (Heartbeat Producer).
➢
Supports network management (NMT).
•
Supports NMT module control.
•
Supports NMT broadcast addresses.
•
Supports NMT error control.
•
Supports boot-up.
➢
Supports SYNC (1
–
240).
➢
Supports asynchronous transmission of 254 and 255.
➢
Supports disabled time.
➢
Supports event timers.