20 en | Installing Access Modular Controller 2
2021-04 | V04 | IM
Installation manual
Bosch Security Systems B.V.
4.6.2 Gounding for Extension Interface
Figure4.6: Location of ground jumper bottom side
Jumper B connects the internal ground of the controller to the RS-485 ground of the slave
interface. Only set jumper B (B2) if the controller powers all other peripheral devices directly
connected to it.