Anybus CompactCom - Technical Overview

Active & Passive Modules
There are two versions of Anybus-CompactCom modules available.

Active Modules: Handles the full protocol stack up to Layer 7, suitable for networks such as Profibus, EtherNet/IP or CC-Link. All necessary software and hardware is included on the active Anybus-CC modules and they can be interfaced through an asynchronous serial interface or via a parallel interface. Both interface alternatives support the same data
exchange methods, functionality and features.
8-bit 2kB Dual Port Ram Parallel Interface
Asynchronous half duplex SCI Serial Interface

Passive Modules: Provides the physical layer of selected network and handles basic communications tasks such as converting serial communications to any supported network. It is suitable for RS485, USB, Bluetooth or as an Ethernet Serial Server.
Passive SCI Serial Interface (Transparent passthrough)

Anybus-ASIC
Integrated into the Anybus CompactCom is a high performance 32/16 Bit RISC microprocessor with built-in Fieldbus/Ethernet network controllers.

Software interface / Anybus Driver
The Anybus-CompactCom software interface is designed to be network protocol independent, allowing the host application to support all major networking systems using the same software driver, without loss of functionality.

To provide flexibility and room for expansion, an object oriented addressing scheme is used between the host application and the Anybus module. This allows for a very high level of integration, since the host communication protocol enables the Anybus module to retrieve information directly from the host application using explicit object requests.

HMS supplies a free source level (C language) software driver that can be used freely to speed up the development process. The Anybus driver acts as “glue” between the Anybus module and the host application, i.e it separates the low level host interface communication from the host application software and provides easy to use function calls for common Anybus related tasks. The driver is fully OS independent, and can even be used without an operating system if required.

Data Exchange
Anybus CompactCom network interface offers device specific features and functionality. The implementation differs fundamentally between the different fieldbus and Ethernet networks, but this is handled by dedicated objects in the Anybus module in a standardized way. Anybus Object Model

The network interface must be seen and work as a highly integrated component. Anybus-CC provides an interface that is based on product parameter data exchange instead of blocks of I/O and parameter data. The Anybus-CC module does not store any data internally unless for buffering of high speed I/O data. To address this difference the Anybus-CC offers a standard Anybus API for:

Process & Parameter Data Exchange
Device diagnostics
Network and system events

Through the API the Anybus-CC enables the host applications parameters and services to be visible to the network. With Anybus-CC it is therefore possible to define product parameter lists, perform direct updates via the network on changes and define associated parameter attributes such as, Name, Value, Min, Max, Unit, etc.

Interface Methods
Anybus CompactCom has both a 2kB (8-bit) Dual Port Ram Parallel Interface with a 30ns access, with interupt or polled, and an Asynchronous UART Serial interface (n8,1) with configurable baudrates of 19.2kbps - 625kbps with a fixed frame size for efficient DMA usage.

Innovative Housing and Mounting Mechanism

The module fastening is handled by the module mehanics; no additional mounting screws are required. The only thing that needs to be considered is the fastening holes in the PCB. The PE (Protected earth) connection is made on module insertion, via a metallic clip at the bottom of the module.

KEY TECHNICAL FEATURES - ANYBUS COMPACTCOM

Active modules: Handles the full protocol stack up to Layer 7, suitable for networks such       as Profibus, EtherNet/IP or CC-Link

Passive modules: Provides the physical layer of selected network and handles basic       communications tasks such as converting serial data.

2kB (8-bit) Dual Port Ram Parallel Interface with a 30ns access, with interupt or polled

Asynchronous UART Serial interface with configurable baudrates of 19.2kbps - 625kbps

On-board high performance Anybus NP30 RISC communications ASIC

Network independant hardware and software for cyclic, acyclic & diagnostic functions

Robust plastic housing and innovative CompactFlash connection to host product