Rockwell Automation 150 SMC-Flex User Manual - Manual (Page 111)

Communications 7-7
Default Input/Output Configuration The default configuration for I/O is 4 bytes in and 4 bytes out (TX =
4 bytes, RX = 4 bytes). The total size may very when used with a
communication card. The default configuration is arranged according
to the following table.
➊ The feedback word is always Current in Phase A
➋ The reference word is not used with the SMC-Flex, however the space must be reseverd
Note: The total size produced or consumed may vary, depending on
the communication card being used. For more information,
refer to the User Manual for the communication card.
Variable Input/Output
Configuration The SMC-Flex supports 16-bit DataLinks. Therefore, the device can
be configured to return additional information. The I/O message size
depends on how many DataLinks are enabled. The following table
summarizes the I/O data sizes.
To configure DataLinks, refer to Configuring DataLinks on
page 7-10.
Table 7.E
Produced Data (Status) Consumed Data (Control)
Word 0 Logic Status Logic Command
Word 1 Feedback ➊ Reference ➋
Table 7.F
Rx
Size
Tx
Size
Logic Status/
Command
(16-bit)
Reference/
FeedBack
(16-bit)
DataLinks
A B C D
4 4 x x
8 8 x x x
12 12 x x x x
16 16 x x x x x
20 20 x x x x x x