Doc: HMSI-27-309, Rev. 3.11Anybus Communicator PROFINET User Manual
Chapter 9
9. DF1 Protocol Mode
This mode makes the Anybus Communicator act as a DF1 protocol master on the sub-network.
9.1 General
In DF1 master mode, communication is based on “services”. A “service” represents a set of commands
and operations on the sub-network, that is predefined in the Anybus Communicator. Each service is
associated with a set of parameters controlling how and when to use it on the sub-network.
The communication is based on a query-response scheme, where the gateway issues a query on the sub-
network. The addressed node on the sub-network is expected to issue a response to that query. Nodes
are not permitted to issue responses spontaneously, i. e. without first receiving a query.
In DF1 Master Mode, ACM comes preloaded with a number of services, that can be selected by the user.
The actual DF1 commands, that perform the services during runtime, are predefined in the Anybus
Communicator. The configuration of the services is performed by right-clicking on a node in the ACM
and selecting “Add Command”.
Subnetwork Devices
Gateway
Control System
To Next Page
Loading...
