ProSoft Technology PLX8X-MNET-61850 - Manual (Page 166)

Reference PLX8x-MNET-61850 ♦ Communication Gateway
User Manual Modbus TCP/IP to IEC 61850
Page 166 of 228 ProSoft Technology, Inc.
May 14, 2014
6.4.7 Modbus TCP/IP Server
Modbus TCP/IP Server Startup Sequence:
a Connect to Event Logger
b Connect to tag database
– Error message in event log on fail
c Parse configuration file
– Error message if cannot create configuration
object
d Connect to system tag database
e Initialize diagnostics
f
Connect to MCP – Error message in event log on fail
g Create server pool
h Server pool creates a server thread for each configured server
i
Inform MCP that driver is ready to run
j Wait for run signal from MCP
k Run server communications: wait for Client to connect
l
If receives quit signal from MCP clean up threads and exit process
Each Client will try to connect in a loop until the connection is made. If the
attempt to connect fails, it will wait 100ms and try again. If a connection is lost it
start trying to connect the same as during startup.
The server will disconnect on connection loss or when there is no communication
for a timeout period. It will then begin listening for a connection request from a
Client.