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Application Note WI-GTWY-9-DE1 DeviceNet Slave

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Page 2 of 16 App Note WI-GTWY-9-DE1 v1.1

Summary

The following example details mainly the configuration or the actual DeviceNet Network, without

detailing PLC Logic or WI-GTWY-9-DE1 Radio Network configuration. Refer to the respective

user manuals for these details.

The example uses the SLC 5/04 and Associated 1747-SDN DeviceNet Scanner as the master on the

network, communicating with the WI-GTWY-9-DE1 as a DeviceNet slave. I/O transfer between the

network devices will be demonstrated in a generic manner. Refer to the block diagram below.

In the example (see diagram above), the WI-GTWY-9-DE1 makes a total of 40 bytes of data

available to the DeviceNet Scanner. Of these 40 bytes, 20 bytes will belong to a ‘POLLED’

connection instance and the remaining 20 will belong to a ‘COS” (Change Of State) connection

instance. The scanner will also write 20 bytes of I/O cyclically to the WI-GTWY-9-DE1 using a

POLLED connection instance.

The two main steps in setting up the example will be configuration of the DeviceNet Network for

both the WI-GTWY-9-DE1 and DeviceNet Scanner respectively. WI-GTWY-9-DE1 configuration

will be carried out via the W-Series Configuration Utility, and the DeviceNet Scanner configuration

via RSNetWorx for DeviceNet.

DeviceNet is based on the Control and Information Protocol (CIP) which is an object-oriented

protocol (see www.ODVA.org). The WI-GTWY-9-DE1 acts as a ‘communications adapter’ and

supports up to 512 bytes of input and 512 bytes of output data, via the standard CIP ‘Assembly

Object’. The WI-GTWY-9-DE1 supports 6 individual instances of input and output data blocks via

the Assembly Object. Data that are to belong to the same connection instance type (i.e. COS

connection instance) should be grouped within the same I/O Instance in the WI-GTWY-9-DE1 G

via configuration software.

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Weidmuller WI-GTWY-9 Manual de usuario Pagina 2