Moxa IA262-I-T-LX [39/74] Using dictionary editor gui

IA261/262 WinCE User’s Manual CANopen Library

NETWORK MANAGEMENT CONSUMER

A Network Management (NMT) slave is provided as required by the specification. The NMT

Object receives commands to change the state of the device or reset the device’s application and/or

communications.

NODE GUARD/HEARTBEAT

There is a single Node Guard or Heartbeat endpoint as required by the CANopen specifications.

They both exist in our protocol.

SYNCHRONIZATION CONSUMER

One synchronization consumer (SYNC) is provided. The SYNC message is simply an event to the

application to generate any synchronized PDO messages.

Using Dictionary Editor GUI

The object dictionary functions as a central information database for the device. Every object

within the device is represented within the dictionary by an index, subindex, and some access

information. An object can be as simple as a single byte of data or a more complex data structure.

Table 1 shows the basic areas of the dictionary that are defined by index in the CANopen

specification.

Table 1. Location Ranges Within The Object Dictionary

Index Object

0001-001F Static Data Type

0020-003F Complex Data Types

0040-005F Manufacturer Specific Data Types

0060-007F Device Profile Static Data Types

0080-009F Device Profile Complex Data Types

00A0-0FFF Reserved

1000-1FFF Communication Profile Area

2000-5FFF Manufacturer Specific Profile Area

6000-9FFF Standardized Profile Area

A000-FFFF Reserved

The CANopen library comes with the following tool:

Object Dictionary Editor GUI. This tool helps a lot in generating object dictionary source code for

each node.

Developing a new node

Creating a new CANOpen node implies defining the Object Dictionary of this node. To do that,

the developer must provide a C file that contains the definitions of all dictionary entries, and an

index table that helps the stack access some entries directly.

1) Using Dictionary Editor GUI

The Object Dictionary Editor is a WxPython based GUI that is used to create the C files needed to

create a new CANOpen node.

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