Rockwell Automation PLC-5 Fieldbus Solutions for Integrated Architecture User Manual - Manual (Page 277)

Publication 1757-UM006A-EN-P May 2002
1788-CN2FF Installation Example F-29
Configuring the Fieldbus Device
Once you have finished assigning device names you need to program
the Fieldbus devices to move data where we want it.
1. In the screen below, select all the Analog Input Function Blocks
in the Fieldbus Transmitters in the column on the left, and drag
them into the Function Block Application window.
2. Drag one of the CN2FF Multiple Analog Input Function Blocks
to the right side of the FB Application Window.
All “AI” Blocks have AI in [ ] to the right of their Tag Name.
3. Consider the Loop Time which can be set in the window just
above the Function Block Application.
You will need 40 to 50 ms for the transmission of each data
value you put on the Fieldbus. Therefore, if you connect 10
Function BLocks to the MAI, you need a loop time of 500ms or
more.