Beckhoff FC520x Manuel d'utilisateur télécharger pdf (Page 38)

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FC520x / CX1500-x520

BECKHOFF FC520x / CX1500-x520

4.4.2.3 ADS

In order to be able to read and write attributes during the running time (e.g. from the PLC), the Box (e.g.

Bus Coupler) can be allocated via an ADS port. The ADS Port can be used to read / write attributes via

ADS read requests / ADS write requests:

The ADS IndexGroup contains the ClassId and the ADS IndexOffset contains InstanceId and AttributeId

(InstanceId * 256 + AttributeId).

The following ADS-Commands are used to exchange DeviceNet Explicit-Messages:

ADS Command

DeviceNet Service

(ServiceCode)

Index-

Group

IndexOffset

ADSRead Get_Attribute_Single (0x0E) ClassId (InstanceId * 256 + AttributeId)

ADSWrite Set_Attribute_Single (0x10) ClassId (InstanceId * 256 + AttributeId)

ADSReadWrite Common DeviceNet Service ClassId (InstanceId * 256 + ServiceId)

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Beckhoff FC520x Manuel d'utilisateur Page 38