Communication via RS485

Connecting the RS485 connection

De-energise the inverter. Switching off the inverter
INFO
Requirements of communication cable:
- wire cross-section from 0.34 to 1.5 mm² (rigid) or 0.34 to 1.0 mm² (flexible)
- bus length max. 1000
- length of stripped insulation approx. 7.5 mm
Guide the RS485 cable through the communication plug and seal provided.
Fit RS485 cable on plug.
RS485 out is used to continue the network connection to further inverters.
Assemble plug and tighten union nut to the prescribed tightening torque.
Tightening torque: 3 Nm.
Connect plug to interface in COM5 connection panel.
Connect RS485 cable to external device (e.g. data logger).
INFO
After commissioning, the settings for the RS485 connection still have to be configured in the app.
This includes, for example, setting the transmission speed.
The inverter is set as Master RS485 or slave using the KOSTAL PIKO CI Conf Tool app on each inverter. To do this, go to Settings > Communication settings > Master/Slave settings > Master/Slave settings and then select Master RS485 or Slave. The master forwards data to the slave inverters. This can be, for example, a feed-in limitation.
The RS485 termination of the last inverter must be set to ON in the KOSTAL PIKO CI Conf Tool app. This can be done under Settings > Communication settings > RS485 Settings > Terminal resistor.