7 Installation
Connecting the communication card
68
Installation and operation manual M70A_260 Flex RPI703M26000 EU V1.1 EN 2022-08-02
7.6.3 Connecting a data logger via RS485
7.6.3.1 Introduction
NOTICE
Unwanted currents.
In some installation variants, unwanted currents
can flow when multiple inverters are connected
via RS485.
►
Do not use GND and VCC.
Terminal assignment of the RS485 terminal block
2
1
3
4
5
6
1
VCC (+12 V; 0.5 A)
2
GND
3
DATA+ (RS485)
4
DATA– (RS485)
5
DATA+ (RS485)
6
DATA– (RS485)
Fig. 7.2:
Terminal assignment of the RS485 terminal block
Terminal pair 3/4 or 5/6 can be used to connect a data logger.
The second terminal pair is only required when connecting sev-
eral inverters via RS485. The second terminal pair can also be
used to connect a PC.
Data format
Baud rate
9600, 19200, 38400; Standard: 19200
Data bits
8
Stop bit
1
Parity
Not applicable
DIP switch for the RS485 termination resistor
Fig. 7.1:
DIP switch for the RS485 termination resistor
RS485 connection diagram for a single inverter
RS485
Termination resistor = ON
Data logger
Fig. 7.2:
RS485 connection diagram for a single inverter
