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FX2N-32CAN Communication Module
Module Parameterization and Configuration 5.
5.
Module Parameterization and Configuration
Each CANOpen node must have certain parameters defined in order to communicate
information to other CANOpen nodes. These parameters include the Node Number, the baud
rate, the Watch Dog Timer setting (specific for FX
-32CAN module), and the communication
2N
mapping set.
The CANopen networ k has a defined Object Dictionar y for parameters and data
communication. The FX
/FX
PLC can write this information to the CANbus through the
2N(C)
1N
buffer memory addresses of the FX
-32CAN module.
2N
A network configuration tool is a powerful device for setting the parameter data for any
manufacturers node (including the FX
-32CAN) and defining the data mapping connection
2N
set. It is recommended to use a network configuration tool for large networks due to the
convenience, flexibility, and ease of use that the tools provide.
To build up a small network or for testing purposes, the module Command InterFace (hereafter
called the CIF) supports three PDO mapping/binding commands designed for and supported
by the FX
-32CAN module. Example PLC programs are given in Chapter 7. By using these
2N
predefined Mapping configurations, the CAN object ID (COB-ID) number for data exchange for
each node is clearly defined. For example an Rx-PDO (receive process data object) can be
connected to a Tx-PDO (transmit process data object) of another node. These data will
always be transmitted with the same COB-ID and every node can distinguish relevant data by
checking the COB-ID.
Note: It is strongly recommended to execute the Mapping Commands only in the pre-
operational or stopped mode of the local and all related CANopen nodes.
5-1
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