Echelon LonScanner FX Protocol Analyzer - Manual (Page 62)

56 Example Logs
Figure 44. Example Log File Two – Packet 13 Selected
In Figure 44, packet 13 is selected in the Packet Log. At packet number 13,
device DI-1 is sending out a group acknowledged network variable update
message (group number 0). The message data (Data field) is “100.0 1”, which is a
SNVT_switch structure. At packets 14 and 15, device DO-1 and LNS Network
Interface send acknowledgments back to device DI-1. These packets represent a
fan-out connection from device DI-1 to device DO-1 and an LNS Network
Interface.
At packet number 18, device DI-1 is sending a repeated network variable update
message to device DO-1. The retry count is 3 by default, and packets 19 to 21 are
the retry messages. Because this message was sent using the repeated
messaging service, no response is expected from the target device DO-1.