Delta PCS100 Installation Manual page 51

Communication wiring
The PCS125 supports two methods for communication: Ethernet and RS485. Ethernet can be used for
a site controller or cloud server or remote server. And RS485 can be used for a site controller.
 Ethernet and RS485 can't be connected at the same time.
 A 120Ω terminal resistor must be settled in the site controller before it's connected by RS485.
The connection diagrams of the two communication methods are shown in Figure 53 and Figure 54.
1. Connected by Ethernet.
When a single PCS#1 is used, make sure the connector CNJ11 not connected.
PCS#1
Ethernet
CNJ16
SJ1 SJ2
CNJ7
Installation Manual
PCS#2
CNJ16
CNJ12
CNJ11
SJ1 SJ2
Figure 53. Connected by Ethernet
47
CNJ12
CNJ11
CNJ7
Wiring Instructions
PCS#N
CNJ16
CNJ12
CNJ11
SJ1 SJ2
CNJ7