B&B Electronics GW-7433D - Quick Start Guide User Manual
Gw-7433d modbus tcp server/canopen master gateway, Quick start user guide, Introduction

GW-7433D
MODBUS TCP Server/CANopen Master
Gateway
Quick Start User Guide
1. Introduction
The CAN (Controller Area Network) is a serial communication protocol, which
efficiently supports distributed real-time control with a very high level of security.
It is an especially suited for networking “intelligent” devices as well as sensors
and actuators within a system or sub-system. In CAN networks, there is no
addressing of subscribers or stations in the conventional sense, but instead,
prioritized messages are transmitted. CANopen is one kind of the network
protocols based on the CAN bus and mainly used for machine control network,
such as textile machinery, printing machines, injection molding machinery, or
packaging machines, etc. CANopen is a low level network that provides
connections between simple industrial devices (sensors, actuators) and
higher-level devices (controllers), as shown in Figure 1.1.
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DEVICE LAYER - CANopen
I-87123
+
GW-7433D
CONTROL LAYER
INFORMATION LAYER
Figure: Example of the CANopen network
GW-7433D MODBUS TCP/CANopen Gateway Quick Start User Guide (Version 1.0, July/2008) 1