Flowserve MX/QX Profibus DP/PA Field Unit - Manual (Page 38)

PB DPV1 / PA Field Unit Installation and Maintenance FCD LMENIM2336-03 – 12/12
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Software
3.1 PROFIBUS Protocol
This fieldbus system uses the PROFIBUS fieldbus protocol to communicate over the PROFIBUS
network with other PROFIBUS devices. The signals are encoded using the Non-Return to Zero
(PROFIBUS DP) and Manchester Biphase-L (PROFIBUS PA) technique. The signals are called
synchronous serial because the clock information is embedded in the serial stream. The protocol
uses built-in error checking rules when processing data.
3.2 PROFIBUS Function, Transducer,
and Physical Blocks
The MX/QX Actuator is designed to comply with the PROFIBUS PA Profile, Version 3.0. This profile
provides the user with a standard interface for control and management.
This standard profile provides the following blocks for the network user. Details of each block are
described in the following paragraphs.
• One Physical Block
• One Transducer Block
• Several Function Blocks
The Physical Block is used for general device management. A device contains only one Physical
Block. Physical Blocks are usually used during commissioning and maintenance, and contain
parameters such as:
• Manufacturer’s Name
• Device Name (ID)
• Device Serial Number
• Identification and Maintenance (I&M) Functions
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