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RS485 to Ethernet TCP/IP Converters

ModbusTCP

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

Since Modbus communication primarily occurs over an IP/TCP network, it is referred to as ModbusTCP, as opposed 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 settings:

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 back in DHCP mode, meaning the router randomly assigns a new IP address to it. See the router configuration to determine this address.

The converter can be configured via its internal web portal accessible through its IP address directly from a browser. Login is 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.

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