SMA Sunny Tripower CORE1

Compatibility

External reading needs the exact firmware map

SMA documents Ethernet SMA and SunSpec Modbus for the STP 50-40/50-41 family, disabled by default. The exact-firmware measured-values map and commissioned endpoint must be confirmed before planning an Edge reading path.

STP 50-40 firmware 3.00.00.R through 3.11.##.R, or STP 50-41 firmware 4.01.01.R and later, as stated by operating manual STP50-4x-BE-en-23. Excludes CORE1-US, Sunny Tripower X 60 and earlier firmware. Confirm installed regional nameplate, firmware and SMA control hierarchy before any external access.

Models

Specifications

The STP 50-40/50-41 operating manual identifies a transformerless 50 kW three-phase PV inverter with six independent MPP inputs and two strings per input. SMA’s current product page says CORE1 is no longer marketed and points to Sunny Tripower X 60 as its successor; the products have separate manuals and integration contracts.^1, 2

AC rated power

50,000 W at 230 V, 50 Hz; 50,000 VA maximum apparent power¹

PV input

Six independent MPP inputs, two strings per input; 75,000 Wp maximum array power (STC)¹

Modbus access

SMA and SunSpec over IP, disabled by default; ports initially 502 and configurable¹

STP 50-40 firmware

Manual applies from 3.00.00.R through 3.11.##.R¹

STP 50-41 firmware

Manual applies from 4.01.01.R¹

Ingress and cooling

IP65 electronics; -25 to +60°C operating range; three fans¹

Market status

CORE1 is no longer marketed by SMA; X 60 is its named successor²

Interface

Documented measurements and integration boundaries for Sunny Tripower CORE1.

• The operating manual confirms SMA and SunSpec Modbus over the inverter’s IP interface, but not an approved set of external point addresses for an installed unit.
• A factory-default inverter does not expose Modbus. SMA says its ports are initially set to 502 and may be changed after enabling the service.
• The optional SMA RS485 module connects to SMA communication products; it does not prove a Modbus RTU server.
• Inverter production is measured at the inverter, while site import and export depend on a separate feed-in meter and the installed control design.
• Modbus can modify parameters and setpoints. This guide authorizes no writes, export-limit control or VPP dispatch.

Setup

1. Identify the installed variant

   Record the STP 50-40 or STP 50-41 nameplate, firmware, country data set and system-controller owner. Do not apply CORE1-US or X 60 documentation to this family.

2. Plan the network boundary

   SMA recommends a firewall, closed unused ports and VPN-only remote access. The manual advises against forwarding the active Modbus port. Keep the inverter inside the restricted site network.

3. Obtain the exact measured-values map

   Request or locate SMA’s current “Modbus parameters and measured values” document for the installed nameplate and firmware. Confirm protocol profile, register address convention, function, type, scale and unavailable-value handling before polling.

4. Commission read-only access

   The qualified installer enables the otherwise disabled service and records the actual IP address and configured port. Preserve the existing SMA Data Manager, plant control and grid settings.

5. Compare an observed value

   After the map is qualified, compare an identity and live production value with the SMA user interface at the same time. Treat stale or invalid values as missing; qualify the feed-in meter separately for import or export.

Common questions

Is Modbus available without commissioning?

No. SMA states that the interface is disabled by default. Port 502 is an initial setting, not evidence that a service is active or that this site retains the default.¹

Can the optional RS485 module be polled as Modbus RTU?

The manual describes that module as a way to communicate with selected SMA communication products. It does not establish Modbus RTU support for the module.¹

Can a CORE1 register map be reused for Sunny Tripower X 60?

No. SMA names X 60 as the successor. Its hardware, firmware and Modbus documentation must be evaluated separately.^1, 2

Does inverter generation equal grid export?

No. A feed-in meter measures the grid connection, while the inverter reports its own production. Use each source for its own measurement boundary.¹