Installation Prerequisites
3.2
Resistor for the communication interface of the higher-level system
3.2.1
Modbus
RTX+
RTX−
GND
1
2
3
4
5
6
7
8
9
RTX+
RTX−
If the Modbus protocol is used between the ESS and the higher-level system, make
sure to install a 120 Ω resistor between the RTX+ and RTX− channels on the inside of
the connector to or of the higher-level system.
3.2.2 CAN
CAN_L
CAN_H
GND
1
2
3
4
5
6
7
8
9
CAN_L
CAN_H
If the CAN protocol is used between the ESS and the higher-level system, make sure
to install a 120 Ω resistor between the CAN_L and CAN_H channels on the inside of
the connector to or of the higher-level system.
20