Port 502 is used for ModbusTCP, don't occupy it.
Port 8172 is used by the upper computer software for real-time data, don't occupy it.
Ports 29999, 30003 and 30004 are for TCP/IP secondary development, don’t occupy them.
Port 29999 is used for initialization instructions.
Port 30003 is used for motion commands.
Port 30004 is used for information printing.
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