Rockwell Automation 20-COMM-E PowerFlex EtherNet/IP Adapter - Manual (Page 244)

C-10 EtherNet/IP Objects
20-COMM-E EtherNet/IP Adapter User Manual
Publication 20COMM-UM010G-EN-P
N-Files
N-File Description
N40 This N-file lets you use Emulated Block Transfer messages to read and write many types
of DPI messages. To use Emulated Block Transfer messages, you send a Write message
to N40:0…N40:63, wait until the adapter responds with a reply message, and then read
the response data in N40:0…N40:63 with a Read message.
For details about Block Transfer messages and the data required for each byte in the
N-File, see the Remote I/O Adapter User Manual, publication 20COMM-UM004.
Bits 15…8 are the Most Significant Byte. Bits 7…0 are the Least Significant Byte.
Write
Read
Bits 15 0 15 0
N40:0 0x00 Length (in Bytes) 0x00 Length (in Bytes)
N40:1 DPI Port 0x81 Status Size Status Type
N40:2 0x00 CIP Service Data
(length varies based on message)
N40:3 CIP Class
N40:4 CIP Instance
N40:5 CIP Attribute
N40:6 Data
(length varies based on message)
…
N40:63
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 adapter is not receiving peer I/O from another adapter.
• The value of N42:3 is set to a non-zero value.
Write
Read
N41:0
N41:1
N41:2
N41:3
N41:4
N41:5
N41:6
N41:7
N41:8
N41:9
N41:10
N41:11
N41:12
N41:13
N41:14
N41:15
N41:16
N41:17
N41:18
Logic Command Word
Reference (least significant word)
Reference (most significant word)
Datalink A1 (least significant word)
Datalink A1 (most significant word)
Datalink A2 (least significant word)
Datalink A2 (most significant word)
Datalink B1 (least significant word)
Datalink B1 (most significant word)
Datalink B2 (least significant word)
Datalink B2 (most significant word)
Datalink C1 (least significant word)
Datalink C1 (most significant word)
Datalink C2 (least significant word)
Datalink C2 (most significant word)
Datalink D1 (least significant word)
Datalink D1 (most significant word)
Datalink D2 (least significant word)
Datalink D2 (most significant word)
Logic Status Word
Feedback (least significant word)
Feedback (most significant word)
Datalink A1 (least significant word)
Datalink A1 (most significant word)
Datalink A2 (least significant word)
Datalink A2 (most significant word)
Datalink B1 (least significant word)
Datalink B1 (most significant word)
Datalink B2 (least significant word)
Datalink B2 (most significant word)
Datalink C1 (least significant word)
Datalink C1 (most significant word)
Datalink C2 (least significant word)
Datalink C2 (most significant word)
Datalink D1 (least significant word)
Datalink D1 (most significant word)
Datalink D2 (least significant word)
Datalink D2 (most significant word)
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 file. If the
adapter does not receive a message in the specified time, it performs the fault action
configured in its [Comm Flt Action] parameter. A valid setting is between 1 and 32767
seconds (5…20 seconds is recommended).
N42:7 Adapter Port Number (read only): DPI port on the drive to which the adapter is connected.
N42:8 Peer Adapters (read only): Bit field of devices having DPI Peer capabilities.