Rockwell Automation 1788-CN2FF ControlNet-to-FOUNDATION Fieldbus H1 Linking Device User Manual - Manual (Page 29)

1788-6.5.1 - January 1999
Using the ControlNet-to-FOUNDATION Fieldbus H1 Linking Device 4-3
The NI-FBUS Configurator sets up the analog input devices to publish their
data on Fieldbus. The linking device MAI block subscribes to these values
and produces them on ControlNet. Each MAI block has its own schedule of
subscribing on Fieldbus and producing on ControlNet. For different rates
(macrocycle) of production on ControlNet, you must choose different MAI
blocks as shown in the Figure 4.2.
Figure 4.2 Sample Multiple Macrocycle MAI Configuration
You do not have to connect to all the channels in an MAI block instance
before using another instance. You do not have to use the channels in order.
That is, you may use channels CN_A0 and CN_A5 and not use any of the
others.
As shown in the lower loop of Figure 4.2, you can connect any parameter
that is a float value and status combination to the MAI block. In other
words, you can bring values from any function block to the PLC processor.
The MAI block is not limited to interfacing with AI function blocks.