Configurable Modbus Tcp Port; System Time With Sntp; Requirement - Siemens SENTRON 3WA System Manual

5.9

Configurable Modbus TCP port

It may be necessary to change the number of the TCP port due to applications or to ensure
cybersecurity. The TCP port number for Modbus TCP connections can be configured with the
SENTRON powerconfig configuration software or as a data point. The default value 502 can
be changed accordingly.
Note
Changing the default port can make it difficult to find a 3WA circuit breaker in the network
using the default search algorithm (e.g. in the SENTRON powerconfig configuration
software).
5.10

System time with SNTP

5.10.1

Requirement

The Simple Network Time Protocol (SNTP) can be used to set the system time of the 3WA
circuit breaker. SNTP is a simplified version of NTP and automatically sets the system time
with the help of NTP servers (time servers).
3WA Air Circuit Breaker Communication
System Manual, 11/2021, 92310000004-02
Modbus TCP
5.9 Configurable Modbus TCP port
43