Diagnostic Command Support; Diagnostic Loop - AB Quality Allen-Bradley DH-485 User Manual

Diagnostic Loop

Diagnostic Command Support

The KF3 will interpret and respond to the following diagnostic commands:
Table B.A
KF3 Diagnostic Commands
Description
Diagnostic Loop
Diagnostic Read Counters
Diagnostic Status
Reset Diagnostic Counters
Read Link Parameters
Set Link Parameters
You can use this command to check the integrity of the transmissions over
the communication link. The command message transmits up to 243 bytes
of data to a node interface module. The receiving module should reply to
this command by transmitting the same data back to the originating node.
Figure B.1
Diagnostic Loop Command Format
1 byte 1 byte
CMD STS
06
Figure B.2
Diagnostic Loop Reply Format
1 byte 1 byte
CMD STS
46
B
Appendix
Command Byte Function Code (hex)
06 00
06 01
06 03
06 07
06 09
06 0A
2 bytes 1 byte
TNS FNC
00
2 bytes 243 bytes max
TNS DATA
243 bytes max
DATA
B 1