Protocols, ports, and connections
The Ethernet protocols supported by your device allow simultaneous connections through the IP service ports.
By enabling or disabling TCP/IP protocols, you can control whether your meter accepts new socket connection requests. Changing settings for one port does not impact the other existing connections. Depending on the protocol, you can also change the port number.
NOTE: Some protocol port numbers are read-only and not configurable.
| Protocol | Port (default) | Number of connections |
|---|---|---|
| ION (ION over TCP) | 7700 | 8 1 |
| Secure ION (ION over TLS) | 7443 | 8 1 |
| Modbus TCP 2 | 502 | 8 1 |
| Modbus RTU over Ethernet 2 | 7701 | 8 1 |
| DNP | 20000 | 8 1 |
| DLMS | 4059 | 8 1 |
| Modbus TCP (dedicated) 2 | 502 | 32 |
| EtherGate (Com1) | 7801 | 1 |
| DHCP | 67 (68) | 1 |
| SFTP | 22 | 2 |
| Webserver (HTTPS) 3 | 443 | 10 |
| SNMP | 161 | N/A |
| SMTP server (email) outgoing only | 25 | 1 |
| NTP | 123 | 1 |
| IEC 61850 | 102 |
5 |
1 – These eight simultaneous connections are shared by ION, Secure ION, Modbus TCP, Modbus RTU over Ethernet, DLMS and DNP. You can have a maximum of three DNP connections. You can have a maximum of one DLMS connection.
2 – These protocols must be enabled for Modbus gateway functionality.
3 – These are used for the meter’s webpages.
Related tasks:
Disabling and enabling protocols and changing port numbers