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© 2020 KOSTAL Solar Electric GmbH
Operation and operating the device
Modbus TCP
KOSTAL solar inverters can be connected to the Modbus
TCP (LAN) interface, e.g. for a multiple-inverter connec-
tion, but so too can other devices, which evaluate the
KOSTAL Smart Energy Meter’s data or are controlled by
the meter.
Modus - master
In “Master” mode, the KOSTAL Smart Energy Meter
sends and writes information to the registers of the
configured slaves. These are added by entering the slave
IP address (e.g. inverter IP address and port).
Parameter
Explanation
Slave address
Sets the address of a TCP slave. This
can be specified in the form of an IP
address or URL.
Port
Sets the TCP port to the port on
which the slave is anticipating Mod-
bus communication.
x
Deletes the line
Add
Adds a line
Up to 10 TCP slaves can be configured.
Modus - slave
In the “Slave” mode, the Energy Manager provides its
measurement data via the LAN interface (TCP/IP). The
Modbus TCP communication functionality must also be
activated in the inverter.
Parameter
Explanation
Enable TCP Slave
Activated
The Modbus slave functionality on the
Ethernet (LAN) interface is activated.
Data can only be retrieved from the
KOSTAL Smart Energy Meter via the
interface once the interface has been
activated and the settings have been
saved.
Deactivated
The Modbus interface is deactivated.
INFO
The internal current value registers
and the internal energy value regis-
ters can be transmitted and written.
The KSEM/RM PnP registers and the
SunSpec registers are not transmitted
via the Modbus TCP master. You will
find information about the respec-
tive registers in the “ KOSTAL Smart
Energy Meter - Interface Description
MODBUS” documentation in the
download area for the KOSTAL Smart
Energy Meter.
INFO
For the KOSTAL Smart Energy Meter
to be able to receive data via the TCP
interface, the inverter must also trans-
fer this data via this interface.
For the PIKO IQ/PLENTICORE,
this has to be activated e.g. in the
Webserver by going to Settings >
Modbus / SunSpec TCP (see invert-
er's operating manual).
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