Atlas Copco PowerMACS 4000, User Manual

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Peripheral Devices
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8.12.3.2 Profibus DP and DP-V1
The Anybus-CC Profibus communication module provides instant
Profibus Real Time connectivity via the host interface and supports the
following features:

Profibus communication, with baud rates 12 Mbps (auto detect by
the module)

Up to 152/244 bytes of Real Time I/O

Up to 8192 bytes of acyclic data such as cycle data, trace etc.

Acyclic data can be accessed from the network using DP-V1
read/write services.

Generic GSD-file.
Use Name to specify the name of the device. This name should be
referred to when you create a reporter for the fieldbus using the New
reporter form.
Fieldbus Type should be set to DeviceNet.
Use Node addr. field to set the node address. Node address can be set
to [0..125].
See chapter: Fieldbus Interface for a description on PLC bytes In , PLC
bytes Out , Data bytes In , and Data bytes Out.
The parameter Fast bytes In defines the size (in bytes) of the input data
that is transferred as cyclic, or real time, IO data on the ProfiNet IO
network. Max value is
PLC bytes In + Data bytes In. Leaving the
parameter "blank" will make all input data transfererred as cyclic IO data.
Fast bytes Out defines the size (in bytes) of the output data that is
transferred as cyclic IO data on Profibus network. Max value is PLC
bytes Out + Data bytes Out
. Leaving the parameter “blank" will make all output data transferred as cyclic
IO data.
The " fast " areas always start at offset zero (0) of the respective input or output area. The remaining part of
the respective areas is transferred as acyclic data.
The input as well as the output area of the Profibus module is divided in data blocks. The maximum size of
each block is 64 bytes. For example, if 400 bytes output is configured it will be available as seven blocks,
the first six contains 64 * 6 = 384 bytes and the seventh 16 bytes.
The parameter Extended Mode is a checkbox that chooses between the 152 bytes data mode and the
368 bytes data mode. When this checkbox is unchecked the backward compatible 152 bytes data mode is
chosen, and when checked the new 368 bytes data mode is chosen.