Rockwell Automation 1770-KF3 DH-485 Communication Interface User Manual - Manual (Page 52)

Diagnostic Command Support
Appendix B
BĆ4
Example of an Active Node Table
A network consists of 5 stations, numbered 0, 3, 4, 5, and 7. The Active
Node Table would look like this:
0
1
2
3
4
5
6
7
3
FF
FF
4
5
7
FF
0
This command requests a block of status information from a DH-485
device. The reply contains the information in its DATA field. The status
information varies from device to device. The KF3’s status block is given
below.
Figure B.5
Diagnostic Status Command Format
CMD
06
STS TNS FNC
03
1 byte 1 byte 2 bytes 1 byte
Figure B.6
Diagnostic Status Reply Format
CMD
46
STS TNS DATA
1 byte 1 byte 2 bytes 24 bytes
Diagnostic Status