Getting Started; Introduction 13 - Mitsubishi Electric DeviceNet FR-E5ND Instruction Manual

3. GETTING STARTED

3.1 Introduction
This section is intended to facilitate the configuration of the FR-E5ND DeviceNet option with minimum effort. It is assumed
that the default values specified in this section are acceptable to the user. If the user wishes to change these values, the data
necessary to do so is provided later in the manual.
This section assumes that network cabling is complete and DeviceNet communication has been established. The status LED
(LED2 (MNS)) on the FR-E5ND option should be either blinking green or steady green as described in the table in section
2.6.
3.1.1 General Description
The FR-E5ND DeviceNet option unit is considered a slave device in the DeviceNet communication standard. This means
that the FR-E5ND cannot initiate messages on the network. A master device must establish a connection to the option unit
and then send commands, requests for information, etc. Note: When the master station is set-up and turned on, the inverter
unit may need up to 1 minute to get set to a ready for communication status. This is a situation may occur for just the
DeviceNet configuration stage, so this should not be a general problem.
The FR-E5ND option unit supports Group 3 Messaging as defined in the DeviceNet standard. This feature of the FR-E5ND
option unit means that it is possible for one master to control the inverter while another reads data from the same inverter.
This also means that the DeviceNet master must support the UCMM protocol for proper operation.
It is strongly recommended that the user configures the DeviceNet network using a software tool designed specifically for
that purpose. The use of such a tool greatly simplifies the configuration, reduces confusion, and enhances accuracy.
Additionally, the configuration tool will facilitate the elimination of conflicts between network devices and ensure consistency
throughout the network.
One such tool is DeviceNetManager™ as supplied by Rockwell Automation.
Tools are available from many other suppliers but the descriptions contained in the "Getting Started" section are based upon
the use of DeviceNetManager™.
13
GETTING STARTED