CHAPTER 1: COMMUNICATIONS GUIDE ETHERNET INTERFACE
MM300 MOTOR MANAGEMENT SYSTEM – COMMUNICATIONS GUIDE 69
Ethernet interface
The 10/100Base-T Ethernet interface is configured as a Modbus RTU slave. The Ethernet
port has the following characteristics.
• Configuration: setup using IP address, subnet mask, and gateway address.
• Supported Modbus function codes: 3, 4, 5, 6, and 16.
• Supports time/date synchronization via the Network Time Protocol (NTP).
• Ethernet port 502.
• Supports a maximum of 5 virtual connections.
The Ethernet interface has the same memory map layout as the serial Modbus RTU
interface.
Network Time Protocol is enabled if the NTP address is non-zero and the source is
detected.
Once connected to the source, the clock is updated every 30 seconds.
NOTE:
If the IP address of the relay is changed for any reason, the relay must be powered down
then restarted in order for the new IP address to take effect.
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