Master Functionality; Control Boot-Up Sequence, Network Management - BONFIGLIOLI actice Instruction Manual

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Table Of Contents

Table of Contents

4.8

An external control or a frequency inverter defined as a master (node ID = 0) can be

used as a master. The fundamental tasks of the master are controlling the start of the

network (boot-up sequence), generating the SYNC telegram and evaluating the emer-

gency messages of the slaves.

Further, there can be access to the parameterization of all the frequency inverters on

the system bus by means of a field bus connection via the client SDO of the master

frequency inverter.

4.8.1

The Minimum Capability Boot-Up method defined according to CANopen is used for

the state control of the nodes (nodes).

This method knows the pre-operational, operational and stopped states.

After the initialization phase, all the nodes are in the pre-operational state. The system

bus master transmits the NMT command Start-Remote-Node. With this command,

individual nodes or all the nodes can be started together. A frequency inverter defined

as a master starts all the nodes with one command. After receipt of the Start Remote

Node command, the nodes change into the Operational state. From this time on,

process data exchange via the PDO channels is activated.

A master in the form of a PLC/PC can start a node on the system bus individually and

also stop them again.

As the slaves on the system bus need different lengths of time to conclude their ini-

tialization phases (especially if external components exist alongside the frequency

inverters), an adjustable delay for the change to Operational state is necessary. The

setting is done in a frequency inverter defined as a system bus master via

Delay

Properties of the states:

Pre-Operational

Operational

Stopped

Note: