Rockwell Automation 1203-CN1 ControlNet Communications Module 1203-CN1 - Manual (Page 52)

Publication 1203-5.13 – February, 2002
4-8 Configuring a Controller to Communicate with the 1203-CN1 Module
7. Double-click the Input Size field in your product’s row and select
the appropriate size.
Valid sizes are 2, 4, 6, 8, and 10. To determine the size, add 2 if
Control I/O is enabled and add 2 for each datalink that is enabled.
For example, if Control I/O data and all datalinks are enabled, the
size would be 10.
8. Double-click the Output Size field in your product’s row and
select the appropriate size. This Output size should be the same
value as the Input size.
9. Click the RPI(ms) field in your product’s row and enter the
desired time for required packet interval.
Important: Note the value you enter. Ensure that this value is equal
to or greater than the value you will set later in the Network Update
Time field in the Network Properties: ControlNet dialog box.
Important: The actual packet interval (API) may vary from the
requested packet interval (RPI).
Important: The rate at which a SCANport product reports
information to the module varies based on the number of datalinks
enabled, the number of peripherals attached to the product, and the
type of product.
Figure 4.8
Example Configuration with Size Inputs Set for Control I/O Data Only