LG V-NET ACS IO Installation & User Manual page 12

PRODUCT INSTALLATION
12
Connecting the communication Link
Connecting the RS485 communication link
The two RS485 cables must be connected to the BUS_A of the ACS IO and the BUS_B to con-
nect the ACS IO with the ACS IV Controller
Refer to the following illustration when connecting the RS485 cable.
!
CAUTION
• Polarity exists when connecting the RS485 cable, therefore when connecting the two
cables caution must be taken so that they are not switched.
ACS IO Module
BUS A BUS B