Free Modbus template: VARTA Energy Storage | ModbusCloud
Modbus TCP
VARTA Energy Storage
VARTA
Monitors VARTA energy storage systems via Modbus TCP.
Overview
This template reads real-time data from VARTA energy storage systems (pulse, pulse neo, element) via Modbus TCP. It provides state of charge, active power, grid power, frequency, and energy totals. All registers are read-only.
Key readings
State
State of Charge (SOC)
Active Power
Total Charge Energy (AC to DC)
Grid Power and Frequency
Available AC Charging/Discharging Power
Use cases
Monitor state of charge and active power of VARTA battery storage on a live cloud dashboard.
Log total charged energy over time to generate monthly self-consumption reports for customers.
Create an alert when the state of charge drops below a configurable threshold during peak hours.
Track grid power and frequency to detect abnormal grid conditions affecting the storage system.
Monitor error codes remotely to schedule maintenance visits before the customer notices an issue.
Compare available charging and discharging power to verify the system operates within expected limits.
Installation
1Connect the ModbusCloud gateway (MCG or MLP series) to the same local network as the VARTA energy storage system.
2Ensure Modbus TCP is enabled on the VARTA storage unit and note its IP address and port (default Modbus TCP port is 502).
3In the ModbusCloud platform, add a new device and import the VARTA Energy Storage template from the template library.
4Enter the IP address of the VARTA unit and confirm the Modbus TCP port in the gateway configuration.
5Verify that the firmware version on the VARTA system matches the register map used in this template, as addresses may differ between versions.
6Check the live data view in ModbusCloud to confirm that SOC, active power, and grid power values are updating correctly.
Things to watch for
01
All register values show zero or null after connecting. What is wrong?
VARTA has changed register addresses across firmware versions. Verify that your unit's firmware matches the register map starting at address 1065. Update the firmware or adjust register offsets if needed.
02
What Modbus TCP port does the VARTA storage system use?
The default Modbus TCP port is 502. Check the network settings on the VARTA unit to confirm the port has not been changed.
03
Can I control charging or discharging schedules through this template?
No. All nine registers in this template are read-only input registers. The template is designed for monitoring only and does not include write commands.
04
Which VARTA models are compatible with this template?
The template supports the VARTA pulse, VARTA pulse neo, and VARTA element. Other VARTA models may use a different register layout and are not guaranteed to work.
Registers (9)
9 read / 0 write
Name
Address
Function
Type
Unit
Access
State
1065
FC03
uint16
R
State of Charge (SOC, Ss)
1068
FC03
uint16
%
R
Active Power (Ps)
1066
FC03
int16
kW
R
Total Charge Energy (AC->DC)
1069
FC03
uint16
kWh
R
Error code
1072
FC03
uint16
R
Grid Power
1078
FC03
int16
kW
R
Grid frequency
1082
FC03
uint16
Hz
R
Available AC discharging power
1084
FC03
uint16
kW
R
Available AC charging power
1083
FC03
uint16
kW
R
Working with Modbus in your projects?
ModbusCloud is the hardware-plus-software platform that installers use to monitor, visualise and control Modbus devices from one portal. This template is one of hundreds you can use right away.
