Rockwell Automation 25-COMM-D PowerFlex 525 DeviceNet Adapter - Manual (Page 112)

112 Rockwell Automation Publication 520COM-UM001A-EN-E - April 2013
Appendix C DeviceNet Objects
Message Structure for Execute_Local_PCCC
The DeviceNet adapter supports the following PCCC command types:
For more information regarding PCCC commands, see DFI Protocol and
Command Set Manual (publication
1770-6.5.16 ).
N-Files (Single-Drive)
Request Response
Name Data Type Description Name Data Type Description
CMD USINT Command byte CMD USINT Command byte
STS USINT 0 STS USINT Status byte
TNSW UINT Transport word TNSW UINT Transport word. Same value as the request.
FNC USINT Function code. Not used for all CMDs. EXT_STS USINT Extended Status. Not used for all CMDs.
PCCC_params Array of USINT CMD/FNC specific parameters PCCC_results Array of USINT CMD/FNC specific result data
CMD FNC Description
0x06 0x03 Identify host and some status
0x0F 0x95 Encapsulate the other protocol
0x0F 0x00 Word range read
0x0F 0x01 Word range write
N-File Description
N41 This N-file lets you read and write control I/O messages. You can write control I/O messages only when
all of the following conditions are true:
• The adapter is not receiving I/O from a scanner. For example, there is no scanner on the network,
the scanner is in idle (program) mode, the scanner is faulted, or the adapter is not mapped to the
scanner.
• The value of N42:3 is set to a non-zero value.
Write Read
N41:0
N41:1
N42:2 Logic Command Word
Unused
Reference Logic Status Word
Unused
Feedback
N42 This N-file lets you read and write some values configuring the port
N42:3 Time-out (read/write): Time (in seconds) allowed between messages to the N41 or N44 file. If the
adapter does not receive a message in the specified time, it performs the fault action configured in
parameter C143 [EN Comm Flt Actn].
N42:7 Adapter Port Number (read only): DSI port on the drive to which the adapter is connected.
42:8 Peer Adapters (read only): Bit field of devices having DPI Peer capabilities.