Communication with the Inverter Via the RS232 Port
SP25-55_User Manual_B8_EN_2012-11-06 15/32
7 Communication with the Inverter Via the RS232 Port
All that is required to connect the inverter to a PC is a serial connection cable. Only pins 2, 3 and 5 are
relevant in respect of the wiring in the cable. The cable should be no more than 15 metres long.
The PC or laptop to be connected must have an RS232 port. If the computer is equipped with just a
USB port, a USB–RS232 port adapter cable must be used.
Data are read out by means of the SOLPLUS+ or HyperTerminal software.
8 Communication With the Inverter Via the Ethernet Port
and Webbrowser
With the help of a PC, you can use the Ethernet link to control the inverter via a web browser or
Solutronic's communication software SOLPLUS+. Provided that your converter is connected to a
network and has been configured correctly, you can call up and read out data from your inverter via
any PC connected to the network.
N.B.: Internet Explorer has difficulties displaying carriage returns and line feeds in text files. We
therefore recommend you use Mozilla Firefox as the web browser.
If you are interested in setting up this form of communication, please load the instructions for the
Ethernet browser from the CD supplied or download them from www.solutronic.de.
9 Communication with Several Inverters by means of
Master-Slave Data Communication
The master-slave data communication function is used to network up to 32 inverters in an installation.
For this purpose, the inverters must be connected to each other via the standard RS485 port. One of
the inverters in the installation is defined as the "data master". The display of this inverter then shows
the most important data (the data of the basic menu). The "data master" also records the current
power level and the yields of the "data slaves" and adds them together.
If you are interested in setting up this form of communication, please load the instructions for master-
slave data communication from the CD supplied or download them from www.solutronic.de.
10 SOLPLUS+ Communication Software
SOLPLUS+ is a Windows program for evaluating inverter data and incorporates the following basic
functions:
• Configuration of the inverter
• Connection to the inverter via RS232, Ethernet and modem
• Easy configuration of an installation: you can store different configurations, i.e. different
installations. For example, you can monitor an installation with 2 inverters on your roof via
RS232 or RS485. You can then load a new configuration to call up and monitor an installation
that consists of 10 inverters via modem.
• In the same way as with the display, you can use SOLPLUS+ to configure your inverter how
you want to. You can also use the PC to enter a password and then change settings that are
not relevant to safety.
• Modification and implementation of the various "files" that the inverter supplies: list of all
parameters, fault memory, annual energy logger etc.
SOLPLUS+ reads out the data logger and transfers the data to the PC. The values to be read out and
displayed must be selected individually by the user. All parameters can be read out. Simple operator
control and a Help function make it possible to monitor how your PV installation is functioning and its
yield.
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