Ethernet — Configuration
The Ethernet Add-On adds a single Ethernet port to the Gateway V4, enabling IP connectivity and Modbus TCP reading.
Compatible product: Gateway V4 + Ethernet
WAN Parameter
The Ethernet Add-On extends the standard WAN parameter with additional values for Ethernet-based uplink:
| Value | Description |
|---|---|
lte | Cellular uplink (NB-IoT or LTE-M) |
lorawan | LoRaWAN uplink |
ethernet | Ethernet as sole uplink |
ethernet+lte | Ethernet as primary uplink with automatic LTE fallback (default) |
ethernet: Data is sent exclusively via the Ethernet port. The cellular modem is not used.ethernet+lte: Ethernet is used when available. If the Ethernet connection is unavailable, the device automatically falls back to LTE.
Ethernet Configuration
| Key | Type | Default | Description |
|---|---|---|---|
ipAddress | String | dhcp | Ethernet IP configuration: dhcp for automatic address assignment, or ip,netmask,gateway for a static address. Optional fourth field for a DNS server: ip,netmask,gateway,dns |
Example — static:
192.168.1.91,255.255.255.0,192.168.1.1
Example: static with DNS server:
192.168.1.91,255.255.255.0,192.168.1.1,192.168.1.1
Example — DHCP:
dhcp
This page describes the single-port Gateway V4 + Ethernet. The Gateway V4 + DIN-Rail has two Ethernet ports and uses a two-entry ipAddress syntax, see DIN-Rail configuration.
Modbus Configuration
| Key | Type | Default | Description |
|---|---|---|---|
modbusCmdConf | String | — | Modbus interface parameters and list of commands (see below) |
modbusInternalAddress | Number | 250 | Modbus address for internal gateway sensors |
addonAccumulate | Number | 1 | Readouts to accumulate before upload (1–15) |
loraFormat | Number | 5 | LoRaWAN payload format: 1 = Verbose, 4 = Compact with timestamp, 5 = Compact without timestamp |
Modbus TCP commands are added to the modbusCmdConf parameter using an IP address as the interface specifier. The interface and commands are separated by /, multiple interface groups by ;.
Syntax:
<ip>/commands;<ip:port>/commands
192.168.1.222→ Modbus TCP, default port 502192.168.1.222:1234→ Modbus TCP, custom port
Supported command codes: 01 Read Coils · 02 Read Discrete Inputs · 03 Read Holding Registers · 04 Read Input Registers
Example:
192.168.1.200/010380000001,020300010002
Modbus TCP entries must use / between interface and commands, because : separates the TCP port. Multiple interface groups are separated by ;. The Modbus Add-On supports Modbus RTU and ASCII over RS-485 only and uses : as separator.