Rockwell Automation 57C329 Remote I/O Communications, AutoMax - Manual (Page 66)

4Ć4
For an M/N 57C330 Remote I/O Head slave drop,
DROP_TIME = [1.9 + (X x 0.08) + (Y x 0.036)] milliseconds
where: X = Total number of output registers being transferred
to the slave drop
Y = Total number of input registers being transferred
from the slave drop
For an M/N 57C328 Remote I/O Head drop,
DROP_TIME=[1.7 + R 0.036] milliseconds
where: R = number of connected rails
For a Remote Drive Interface Head slave drop,
DROP_TIME = 2.1 milliseconds
For a Shark slave drop (all digital I/O) with a drop number of9
to F,
DROP_TIME = 1.8 milliseconds
For a Shark slave drop (analog and digital I/O) with a drop
number of1 to 7,
DROP_TIME = 4.0 milliseconds
The update period of each I\O register on the Remote I/O network is
equal to the sum of the drop time for each drop on the network plus
2.7 milliseconds to poll any inactive drops.
For example, a Remote I/O network with four drops has the following
update rate:
Drop 1, Multibus Rack: 5 inputs, 8 outputs
Drop 2, Multibus Rack: 5 inputs, 6 outputs
Drop 3, Remote I/O Head: 6 inputs, 5 outputs
Drop 4, Digital Shark Rack
Drop 1 Time = [1.5 + (13 x .018)]
=ă1.734 msec
Drop 2 Time = [1.5 + (11 x .018)] =ă1.698 msec
Drop 3 Time = [1.7 + (5 x .013) + (6 x .028)] =ă1.933 msec
Drop 4 Time = =ă1.900 msec
Time to poll inactive drops =ă2.700 msec
Update period for each Remote I/O register ąă9.965 msec
Each register on the Remote I/O network in this example will be
updated by the master Remote I/O module every 9.965 milliseconds.
4.6 Configuration
Before running any application tasks, the system must be configured
using the AutoMax Programming Executive software. The major
function of configuration is to assign meaningful symbolic names to
physical points in the system. This feature allows you to construct
application tasks using variable names instead of actual physical
locations.
The products mentioned in this manual are supported by the current
version of the AutoMax Programming Executive software. To
configure any of the modules using an older version of the