Bosch AMC2-4W, Installation Manual

Page: 27 / 70

Grounding for Host Interface
Figure 4.5: Location of ground jumper RS-485 host interface
The jumper setting A1 shows the factory settings.
Jumper JP1 connects the internal ground of the AMC2-4W to
the ground of the RS-485 host interface.
Jumper JP2 manages the signal ground.
Settings for jumper JP1:
If the ground conductor and the shield on the host are not
connected and ...
–
no party line exists, the jumper JP1 is set (= A2)
– a party line exists, the jumper JP1 is set at the first device,
only (= A2)
Settings for jumper JP2:
If the ground conductor and the shield on the host are not
connected and ...
–
no party line exists, the jumper 2 is set (= A3)
– a party line exists and signal ground is connected, the
jumper 2 is set at the first device, only (= A3)
– a party line exists and signal ground is not connected, the
jumper 2 is set at all devices (= A3)
4.6.1
Access Modular
Controller
Installing | en 27
Bosch Sicherheitssysteme 2016-11 | AMC2-4W |