2 - Schneider Electric CZ, s.r.o.

Architecture,
Presentation
Communication
CANopen bus
Integrated CANopen bus port on Modicon M238 logic
controller, compact base for solutions with AFB
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Tested Validated and Documented Architecture
Modicon M238 logic controller, compact base for solutions with AFB
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CANopen port
The Modicon M238 logic controller bases TM238 LFDC24DTS0 and
TM238 LFAC24DRS0 allow to act as CANopen master thanks to their integrated
CANopen bus connector.
The bus consists of a master station, the Modicon M238 controller type S and slave
stations. The master is in charge of configuration, exchanges and diagnostics on the
slaves.
The CANopen bus is a communication type bus and allows management of various
slaves such as:
b Digital slaves,
b Analogue slaves,
b Variable speed controllers,
b Motor starters,
bbEtc.
The Modicon M238 CANopen master type S controls up to 16 slaves, each with an
input PDO (Process Data Object) and an output PDO.
If a slave has more than one PDO, the maximum number of slaves is reduced by an
equivalent number.
CANopen conformity class
Schneider Electric has defined the conformity classes for CANopen master and
slave devices. Conformity classes are used to identify the services and levels of
service supported by each CANopen device or product. These services are
described in section 4 of our “Machines & Installations with industrial
communications” catalogue.
The table below shows product combination possibilities according to their conformity
class.
Conformity class
Master
product
M10
M20
M30
Slave device
S10 S20 S30
Combination possible: Modicon M238 controller master M10 classe with slave device
S10 classe
Use restriction: Modicon M238 controller type S master M10 class with slave device S20
and S30 classes limits the level of service to that of the lower conformity class, either S20 or S30.
CANopen architecture
Wiring system, see page 4/6
(1) 16 slaves max. with max. limit of: 32 RPDOs and 32 TPDOs
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