Mitsubishi Electric CANopen ME3CAN1-L, User Manual

Page: 15 / 188

Introduction Overview
MELSEC-L Series – CANopen Module ME3CAN1-L 1 – 1
1 Overview
This User's Manual describes the specifications, handling and programming methods for the
CANopen
Module ME3CAN1-L (hereinafter referred to as the ME3CAN1-L) which is used with the
programmable controllers of the MELSEC-L series.
Before using the ME3CAN1-L, please read this manual and the relevant manuals carefully and develop
familiarity with the functions and performance of the MELSEC-L series programmable controller to
handle the product correctly.
1.1 Introduction
The ME3CAN1-L is a network module of the MELSEC-L series. It is used to connect a MELSEC-L series
PLC system to CANopen
and CAN Layer 2 networks. CAN ( C ontroller A rea N etwork) is a serial bus sys-
tem especially for networking devices as well as sensors and actuators.
1.2 Features of the ME3CAN1-L
D-sub connector for connection to CAN
The connection to the CANopen network is made via a D-sub 9-pin connector according to
CiA -303-1 V1.8.
Various bit rates
●
Pre-defined (according to CANopen standard):
10 kbps, 20 kbps, 50 kbps, 100 kbps, 125 kbps, 250 kbps, 500 kbps, 800 kbps, 1 Mbps
CANopen services according to CiA -301 V4.2
●
256 TPDO (1024 word write)
The Process Data Object (PDO) is sent by a node (the producer ) and will be received by other nodes
(the consumers ) which subscribed to it. The Transmit PDO (TPDO) is used to send input data of
the node.
●
256 RPDO (1024 word read)
The Receive PDO (RPDO) is used to receive output data.
●
SDO service
The Service Data Object can be used to read/write data to the Object Dictionary. This command
can be used to set network parameters and also to initiate CANopen
functionality.
●
SYNC service
The SYNC service provides the basic network synchronization mechanism.
●
TIME service
The TIME service provides a simple network clock. CANopen devices that operate a local clock
may use the TIME object to adjust their own time base to that of the time stamp object producer.
●
EMCY object service
Emergency objects are triggered by the occurrence of a CANopen device internal error situation
and are transmitted from an emergency producer on the CANopen device.