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Supported Devices​

Device TypeModbus TCP (Ethernet)RS485Curtailment
INTEG MHT-(25-50)K✅✅✅
INTEG MHT-(4-20)K
I can't find my Solinteg

The Solinteg default bus addresses are 247 for Modbus RTU and 255 for Modbus TCP. The MidTeq EMS will scan for devices on all addresses from 1 to 255. Therefore, it can take a while to scan for devices.

TIP: If you know the bus address of your Solinteg inverter, you can set it in the MidTeq EMS to speed up the scanning process. See the section "Speed up scan process (TCP/RTU)" below.

Modbus RTU (RS485)​

Crimp an RJ45 plug on one end of an Ethernet cable according to the T568B wiring standard. Insert the crimped RJ45 plug into the MidTeq EMS.

On the other end of the Ethernet cable, connect the blue/white wire to connector pin 13 and the solid blue wire to pin 14.

Finally, connect the USB end of the dongle to an available USB port on the MidTeq EMS.

Wiring

The default modbus bus address or RTU is 247.

Modbus TCP​

Modbus TCP is by default enabled on the Solinteg inverters. No additional configuration is required. The default bus address for Modbus TCP is 255. Other common bus addresses for Modbus TCP are 1, 8, 247.

Speed up scan process (TCP/RTU)​

If you know the bus address of your Solinteg inverter, you can set it in the MidTeq EMS to speed up the scanning process. The example below is for a Solinteg connected using Modbus TCP with bus address 255. By changing the min. bus address to 254, we tell the MidTeq EMS to only scan for devices on bus addresses 254 and 255 and to skip the other addresses.

Wiring

Note when having two or more Solinteg inverters​

If you have multiple Solinteg inverters, be aware that:

  • No master-slave configuration is supported. Each inverter must be connected individually to the MidTeq EMS. Any master-slave configuration should be disabled on the inverters.
  • The Solinteg grid meter is not supported when having multiple Solinteg inverters. When importing a Solinteg, use the following setting:
    Wiring
    Use a dedicated meter for grid measurements on the MidTeq EMS, that is not affiliated with any of the Solinteg inverters.