Echelon LonScanner FX Protocol Analyzer Manuel d'utilisateur télécharger pdf (Page 62)

56 Example Logs

Figure 44. Example Log File Two – Packet 13 Selected

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.

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Echelon LonScanner FX Protocol Analyzer Manuel d'utilisateur Page 62