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Introduction
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 (Controller Area Network) 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.
MELSEC-L Series – CANopen€ Module ME3CAN1-L
Overview
1 – 1
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