Emerson 400501-08 manual DeviceNet Messaging and Communications, Master/Slave Relationship

Introduction

9.Operation with off-the-shelf power supplies

10.Power taps that allow the connection of several power supplies from multiple vendors that comply with DeviceNet standards

11.Built-in overload protection

12.Power available along the bus: both signal and power lines contained in the trunk line

DeviceNet Messaging and Communications

Master/Slave Relationship

ODVA defines a DeviceNet Master as:

The device that gathers and distributes I/O data for the process controller. A Master contains a scan list it uses to poll slave devices.

ODVA defines a DeviceNet Slave as:

The slave returns I/O data to its Master when it is polled. With respect to the network, the Slave is a Group 2 Server or a Group 2 Only Server.

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