Data Sheet for Product

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2

3

4

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Connection diagrams

Microcontroller

RS485

Room bus

GND 12V

UP UN

12V

5V

5V

RESET

Door

close

Door

open

Guest

in

room

Do

not

disturbe

Make

up

room

Bell

push

5V GND DATA CK CP

Read head

Address

switch

UG UR

Device connection

Pin Signal

1 UP Data signal +

2 UN Data signal –

3 UG System neutral (GND)

4 UR Supply voltage DC +12 V

Room bus connection terminal

(view of pins from above)

Connection

to the room bus

Wiring diagram

1

S1

X12

234

6334A01

N1

1 234

S1 Magnetic card reader HMR3.1/A

N1 HRC3.. room controller

STOP

Caution

Note the cross-over between pins 3 and 4.

5/6

Siemens HMR3.1/A – Magnetic card reader CM2N6334en

Building Technologies 31.07.2008