Unity 50-120 Kostad
Controls Kostad Unity 50-120 EV charging station via Modbus TCP.
This template connects the Kostad Unity 50-120 EV charging station to ModbusCloud via Modbus TCP. It reads charging voltage, current, power, energy, SOC, and station state. It also allows control of available charging power, suspend mode, and charge control.
- Protocol
- Modbus TCP
- Connection
- Ethernet, Modbus TCP
- Registers
- 16, read and write
- Brand
- Kostad
- Key readings
- Charging Voltage · Charging Current · Charging Power · Charged Energy · SOC · Station Error Code
- Available commands
- Available Charging Power · Suspend Mode · Charge Control · Communication Timeout
- Compatible models
- Unity 50-120
- Last updated
Registers (16)
12 read, 4 write
| Name | Unit | Access | Address (Hidden until you enter your email) | Function (hidden) | Type (hidden) |
|---|---|---|---|---|---|
| State [1] | Read | ||||
| Charger State[1] | Read | ||||
| Charging Voltage [1] | V | Read | |||
| Charging Current [1] | A | Read | |||
| Charging Power [1] | kW | Read | |||
| Charged Energy [1] | Wh | Read | |||
| SOC [1] | % | Read | |||
| Connector Type [1] | Read | ||||
| Maximum Charging Power [1] | W | Read | |||
| Minimum Charging Power [1] | W | Read | |||
| Station Error Code [1] | Read | ||||
| State charging point | Read | ||||
| Available Charging Power[1] | W | Write | |||
| Suspend Mode [1] | Write | ||||
| Charge Control [1] | Write | ||||
| Communication Timeout | Write |
Loading registers…
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Use cases
- Monitor real-time charging voltage, current, and power on a cloud dashboard for each Kostad Unity station.
- Track charged energy per session to generate usage reports for facility managers or tenants.
- Create an alert when a station error code appears so you can respond before customers complain.
- Adjust available charging power remotely to implement dynamic load balancing with other building loads.
- Enable suspend mode during peak tariff hours and resume charging automatically when rates drop.
- Verify SOC readings on the dashboard to confirm that vehicles are charging as expected.
Installation
Connect the Kostad Unity 50-120 to the same IP network as your ModbusCloud Gateway and note the station IP address.
Ensure Modbus TCP is enabled on the Kostad Unity 50-120 and confirm the configured Modbus unit ID.
Import the Kostad Unity 50-120 template from the ModbusCloud template library into your project.
Enter the IP address and unit ID of the charging station in the gateway configuration.
Configure the communication timeout register at address 201 to a suitable value to prevent unintended fallback on communication loss.
Verify that readings such as charging voltage and charging power appear correctly, keeping in mind these are uint32 registers spanning two addresses.
Things to watch for
Why do charging voltage and charging power show incorrect or very large values?
These registers are uint32 types, each spanning two Modbus registers. Make sure your gateway is configured to read two consecutive registers for these values. An incorrect register width will produce misaligned or nonsensical data.
The charging station falls back to a default state when I restart the gateway. How do I prevent this?
Configure the communication timeout register at address 201 to a value that gives the gateway enough time to reconnect after a restart. A too-short timeout causes the station to assume communication is lost and revert to its fallback behavior.
What is the correct register address for setting available charging power?
The available charging power register is located at address 1599. It is a uint32 value, so it occupies two consecutive registers.
Can I use this template with other Kostad Unity models?
This template is designed and tested for the Kostad Unity 50-120. Other Unity models may use a different register map. Check the Modbus documentation for your specific model before using this template.
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