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Communication connections
Via the communication connections (inter-
faces), operating data can be retrieved
from the data memory with an external
computer and specific operating settings
made. Two interfaces are available:
RS 232 and RS 485.
The standard communication interface is
the RS 232 interface, which is installed in
all current PCs and notebooks. This inter-
face allows you to establish contact with
your PC immediately, using a connecting
cable. The use of more than one solar
inverter or cable lengths of more than
50 m requires the use of the RS 485
interface.
The connections for the RS 232 or RS 485
interface supply cable are also made via
circuit board terminals and via the M12
screwed cable glands in the cabinet.
!
A 3-core cable is used for signal transmis-
sion via the RS 232, and a 2-core cable for
the RS 485 interface
(Top figure) RS 232 and RS 485 interfaces
with the signals (from left to right):
RS 485+, RS 485+, RS 485-, RS 485-, GND_G,
TX, RX, GND_G, TX 2, RX 2.
Attention: RS 485+ and RS 485- are dupli-
cated. This means that the cable entry and
exit are additionally clamped.