Bosch Appliances F.01U.278.516 6Connecting the RS-485, Incorrect connection, Correct connection

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16 en InstallationRelay Unit

3.2.6Connecting the RS-485

One Main Unit and up to 32 Relay Units can be connected to an RS-485 bus. Please contact a specialist for a correct installation.

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

CAUTION!

Do not use a star connection for the RS-485 network!

Incorrect connection:

Relay Unit 1

Main Unit

Relay Unit 2

Relay Unit n

Correct connection:

RS-485 bus (1 twisted pair cable)

100 Ω

100 Ω

 

Relay Unit n

Relay Unit 2

Main Unit

Relay Unit 1

NOTICE!

The Main or Relay Units located at the two ends of the bus must be terminated with a 100 Ohm resistor.

F.01U.278.516 V1.0 2012.11

User Manual

Bosch Security Systems

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Contents Relay Unit Page Table of Contents Maintenance OperationDisposal AppendixSafety instructions Importance of safety instructionsDisregarding safety rules General safety instructions1Observation and information Description General descriptionTop view Yellow buttonBottom view Relay Unit rear view Front viewStatus Detailed description Relay Unit V2.02 BN111.242.00ALoudspeaker DisplayKeys Function 5Antenna 4RS-485 interfaceRelay output List of contents 3Installation1Unpacking Installation Installation on a piece of furnitureWall installation Installing the antennaConnecting to the mains Incorrect connection 6Connecting the RS-485Correct connection Setting the 100 Ohm termination jumper Board,Programming Generalities03.01.12 121231OFF / on First useRelay Unit ID · + Special settings Enter CodeSoftware REV a V2.02 BN111.242.00A Please WaitConsulting the alarm or event buffer Adjusting the loudspeaker volume5Operation Switching between alarm and event buffers indication Display indicationsFirst information block Second information blockE01 060511 133305 C203.01.11 A01 NU001Maintenance Monitoring the power supplyMonitoring the backup battery Checking the systemParts replacement CleaningDisassembling the unit Important Safety Instructions Backup battery replacingProcedure Disassembly BatteryDisposal Returning to the manufacturerDimensions and weight Electrical specificationsAAppendix Criterion Number Alarm a or Event E Comment List of criteriaConnectors Power socket unit bottomLine socket unit bottom RS-485 socket unit rearPage Robert Bosch Healthcare Systems, Inc

F.01U.278.516 specifications

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