Table 6. Interface Connector Pin Assignment; Figure 6. Interface Connector - iRZ RU21w User Manual

3.2.2.
Interfaces Terminal Block
The terminal block accommodates RS485 serial interface and input/output lines.

Table 6. Interface Connector Pin Assignment

Pin
1 GPIO1 contact
2 GPIO2 contact
3 GPIO3 contact
4 GPIO4 contact
5 GPIO5 contact
6 GPIO6 contact
7 GPIO7 contact
GND – negative supply voltage input/output
G
VCC – positive supply voltage input/output
V
Shield – signal wire shield contact
S
B Signal B of RS485 interface
A Signal A of RS485 interface

Figure 6. Interface Connector

Purpose
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