Rockwell Automation 1791P-XXXX CompactBlock Distributed I/O on PROFIBUS DP Series D I.I. - Manual (Page 17)

CompactBlock Distributed I/O on PROFIBUS DP Series D 17
Publication 1791P-IN002B-EN-P - October 2003
Refer to the following table for baud rate specifications.
The module produces 1 byte for every 8 inputs. Similarly, the module
consumes 1 byte for every 8 outputs.
Remember, though, when configuring your CompactBlock I/O application,
these values are entered as bytes received (R
x
) and bytes transmitted (T
x
) by
the scanner.
For example, a Base Input module produces 2 bytes and consumes 0 bytes. In
such a case, the scanner connected to the Base Input module will receive (R
x
)
2 bytes and transmit (T
x
) 0 bytes.
Baud Rate Cable Length
Copper Cable*
9.6KBPS 1000m
19.2KBPS 1000m
45.45KBPS 1000m
93.75KBPS 1000m
187.5KBPS 1000m
500KBPS 400m
1.5MBPS 200m
3MBPS 100m
6MBPS 100m
12MBPS 100m
*Specified in PROFIBUS
Standard as 22AWG shielded
twisted pair cable.
IMPORTANT
When installing an expansion module, refer to the table
below to see how many bytes are produced and
consumed by the modules.