Rockwell Automation 1757-FFLD Linking Device Configuration Manual - Manual (Page 94)

Publication 1757-PM002A-EN-E - June 2006
4-40 Applications
If the I/O OK light is blinking green, the IP address may be wrong, or
the Slot number does not match the Slot number in RSFieldbus.
Test the PID Loop
1. Click the Mode button and select Program Mode.
2. Click the PIDE Block Properties button .
3. Edit the PIDE, which is currently in manual mode, to output a value by
changing the CVOoper value, and click OK.
4. In RSFieldbus, go online to view the changes caused by the previous
change.
5. Exercise the loop and verify the operations.
6. Edit the PIDE instruction for automatic operations with appropriate
tuning parameters.
7. Exercise the loop by changing either the Set Point or the AI value.
Device Replacement Foundation Fieldbus supports interoperability, but not necessarily
interchangeability. Interoperability means that devices can communicate with
each other on a common basis. Interchangeability means that devices can not
only communicate with each other on the same basis, but can replace each
other with minimum effort (similar to replacing 4 – 20 mA transmitters for
process sensing).
Since Foundation Fieldbus is a communication protocol with manufacturer
specific function blocks, there is no guarantee that one manufacturer’s
function blocks will operate in a similar manner as another’s. Therefore, reuse
of one manufacturer’s function block in another manufacturer’s device is to be
avoided.