Rockwell Automation 1794-APBDPV1 FLEX I/O PROFIBUS Adapter User Manual - Manual (Page 98)

Publication 1794-UM064B-EN-P - May 2014
86 Configure the Adapter for Master/Slave Communication
Refer to your configuration tool publications for information on how and where
to enter this data.
Enter Check Configuration
Data On a PROFIBUS DP network, the I/O data exchanged between the
PROFIBUS DP master and a DP slave is encapsulated into logical modules. The
total I/O data exchanged between a PROFIBUS DP master and a DP slave
device comprises a set of logical modules which is defined in the check
configuration data.
Each physical slot of the FLEX I/O system is represented by two logical modules
(one input and one output). When the FLEX I/O adapter is powered-up, the
check configuration message configures the module format (input and output
words) and defines the size of the modules within the device. When the sizes are
configured, the I/O data can be optimized to remove unused data from the data
stream.
Both input and output sizes can be configured. If a slot is empty, or if either the
input or output module is zero length, the specific identifier for an empty module
(free place) must be used.
If the end of the identifiers is reached before all slots have been configured, the
remaining slots are configured as empty.
The first two modules allocated are for the adapter itself, and must always be a 1
word input module and a 1 word output module, regardless of what parameter
format you choose. The adapter uses these words for adapter status information.
Modules for each of the individual slots (FLEX I/O modules) must also follow
these word assignments.
Octet 33…34: 0000h output point 2
Octet 35…36: 0000h output point 3
Octet 37…38: 0000h output point 4
Octet 39…40: 0FFFFh Slot 5 empty
Octet 41: 00h Slot 5 all sizes zero
Octet 42…43 0FFFFh Slot 6 empty
Octet 44: 00h Slot 6 all sizes zero
Octet 45…46: 0FFFFh Slot 7 empty
Octet 47: 00h Slot 7 all sizes zero
Octet 48…49: 0FFFFh Slot 8 empty
Octet 50: 00h Slot 8 all sizes zero
User Parameter Example
User Parameter Message, Full Format (Length 43 bytes)
Name Value Description