Communication Module; Rs-485 Connection - Delta RPI-H3 Operation And Installation Manual

5.4 Communication Module

The Communication Module supports the function of communication with computer,
and provides 2 ports of RS-485 .When using this module, the first step is to take off
the cover located at the right bottom of inverter and pull out the RS485 socket as shown
in Figure 5-6.
Terminal resistor switch

5.4.1 RS-485 Connection

The pin definition of RS-485 is shown as in Table 5-4 and protocol settings are listed
in Table 5-5. The wiring of multi-inverter connection is shown as figure 5-7.
Figure 5-6 : Communication module
PIN
1
2
3
4
5
6
Table 5-4 : Definition of RS-485
27
FUNCTION
VCC
GND
DATA+
DATA-
DATA+
DATA-
Wiring