Bosch F.01U.278.516 User Manual download pdf (Page 17)

Relay Unit Installation | en 17

Bosch Security Systems User Manual F.01U.278.516 | V1.0 | 2012.11

3.2.7 Setting the 100 Ohm termination jumper

Within the Main or Relay Units, the RS-485 interface can be configured with a jumper.

1. Disassemble the unit as described in Section 6.5.1 Disassembling the unit, page 25.

2. Remove the communication board as described in Section Removing the communication

board, page 25.

3. Put the 100 Ohm termination jumper J112 (1).

4. Assemble the communication board and the unit. This is basically the reverse of the

disassembling procedure, see Section 6.5.1 Disassembling the unit, page 25.

NOTICE!

If you do not want to disassemble the Relay Unit, you also can short-out pins 3 and 4 of the

connector. This has the same effect as the jumper setting described above.

See Section A.5.3 RS-485 socket (unit rear), page 30 for connector wiring.

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Bosch F.01U.278.516 User Manual Page 17