Rockwell Automation 1757-FFLD Linking Device Configuration Manual - Manual (Page 37)

Publication 1757-PM002A-EN-E - June 2006
Set Up A System 2-27
• 248-251 are available for devices with no permanent address such as
new devices or decommissioned devices.
• 252-255 are available for temporary devices, such as handhelds.
Naming Conventions for Devices
Each FOUNDATION fieldbus device must have a unique physical device tag.
The device tag shall be used for the device diagnostic alarm faceplate.
Every FOUNDATION fieldbus has a 32-byte unique identifier, which is a
hardware address very similar to MAC addressing and consists of the
following:
• 6-byte manufacturer code
• 4-byte device type code
• 22-byte serial number
These identifiers uniquely distinguish the device from all others in the world.
The manufacturer code is universally administered by the Fieldbus
Foundation, which eliminates the potential for duplication. The device
manufacturer assigns the device type code and sequential number. When
devices are shipped or configured as spares, this is the default device tag. The
FOUNDATION fieldbus device tag shall match the instrument tag Indicated
on P&ID.
Things to Consider When
Setting Up a System • For greater reliability, at least one Link Master capable device should be
installed on each H1 network as a backup LAS. Please design for this.
• Redundant transmitters should be installed in separate H1 networks,
preferably in separate linking devices.
• Each H1 should have a seperate power supply and conditioner.
• Each linking device should have a separate power supply.
• Factory Acceptance Tests (FATs) can be completed on a fieldbus system
to verify graphics, database, power, communications, and other system
integration features and functions. For more information on FATs, see
the System Engineering Guidelines, publication AG-181
Additional Resources There are a number of resources available should you encounter difficulties
with your fieldbus application.