Chapter 14 Local Ethernet Function
Below figure is about Modbus settings. .
Note
1) Modbus TCP/IP server connection function allows RST packet transmission depending on the network
condition.(TCP/IP protocol)
So the user devices connecting to CPU module should have RST packet process.
2) Connection to user devices can be disconnected for retransmission time-out.
For the retransmission timeout period, the connection is terminated after waiting twice as long as the previous waiting
time after retransmission time setting value set by the user in the local Ethernet parameter(default value: 100)X10ms),
the number of retransmissions(three times, twice the previous waiting time) and three transmissions.
Retransmission time-out = retransmission time-out value(set in the Local Ethernet Parameter window) x 30ms
3) Too much Network loads can affect a scan time. So user should consider appropriate network loads for CPU scan time.
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