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RS485 to Ethernet TCP/IP Converters

ModbusTCP

When Modbus electric meters are read directly from the Teltonika LAN or 4G router, an RS485-Ethernet converter of the Protoss-PE11 type is used.

As Modbus communication primarily occurs over an IP/TCP network, it is referred to as ModbusTCP, in contrast to Modbus RTU, which simply uses an RS485 bus.

The RS485-Ethernet converter can also be connected to the Climkit gateway. It is possible to use multiple converters simultaneously depending on the project configuration.

By default, the device is delivered configured and ready to use with the Climkit router.

Default parameter:

Static IP address: 192.168.2.10

RS485 bus parameters:

  • Baudrate: 9600
  • Parity: None
  • Data Size: 8
  • Stop Bits: 1

If the device has been reset, it is again in DHCP mode, meaning that the router randomly assigns it a new IP address. Check the router configuration to know this address.

The converter is configurable via its internal web portal accessible via its IP address directly from a browser. Login admin/admin.

Here is the default configuration used by Climkit:

Mbus via TCP

The converter can also be used to read MBus devices via an RS485-MBus converter.

The parameters are the same as above except for:

  • Baudrate: 2400
  • Parity: EVEN
  • Protocol: None

In cases where both Modbus and MBus devices need to be read via TCP, two RS485-Ethernet converters must be used, one for Modbus and the other for MBus.

How Did We Do?

IP Network Configuration and Routers

Configuring Teltonika RUT241

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