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SECTION 2.0
INTRODUCTION TO PROFIBUS ADAPTOR AND
PROFIBUS NETWORKS
MODEL 1056DP SECTION 2.0
INTRODUCTION
2.1 INTRODUCTION TO MODEL 1056 WITH PROFIBUS
2.2 OVERVIEW OF PROFIBUS-DP
2.3 INTRODUCTION TO PROFIBUS - GENERAL
2.1 INTRODUCTION TO MODEL 1056 WITH PROFIBUS
Profibus configurations of Model 1056 (1056-0X-2X-3X-DP) allow digital communications with a Profibus class 1
master to read measured process variables.
Profibus configured Model 1056 units support communications with a Profibus master using any combination of
dual measurement inputs.
Profibus configured Model 1056 units include the following basic components:
1. A plug-in communications board in the card cage slot nearest the Power Supply
2. An M12 cable assembly and metal fitting for connection to the Profibus network (optional)
3. An IPL (Initial program load) for the 1056 main board to add Profibus functionality
4. RAII1056.GSD file for use with a Class 1 master. Must be downloaded from Rosemount Analytical web
address: http://www.emersonprocess.com/raihome/liquid/products/AMS_FIELDBUS.asp
2.2 OVERVIEW OF PROFIBUS-DP
Fieldbus networks are serial communication systems (see Figure 1) used to pass data signals between host
systems and distributed peripheral equipment. The principal advantages of such a system are reduced cabling,
commissioning and maintenance costs when compared with conventional architectures. A pair of wires is all that
is required to transmit all the necessary signals (inputs, outputs, settings, diagnostics, etc.).
Fig 1. PROFIBUS-DP Tree Topology
Note:
T: Termination
R: Repeater (line amp)