Signal Input/Output, Rs232 Interface; Signal Input - Mobotix D12 Manuals

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The signal lines of the se-
rial interface can also be
programmed as additional
signal inputs. Setup
Menu > Event Settings >
Second/Third/Fourth
Signal Input > Signal In-
put 1/2/3. This means
that you can use three ad-
ditional signal input lines
Polarity can be switched
Bridge < 2 kOhms
Integrated low-pass fil-
ter: 10 kOhms, 10 nF
D12 Camera Manual Part 1

3.8 Signal Input/Output, RS232 Interface

The MOBOTIX camera provides a signal input/output as well as two additional sig-
nal input pins and two signal output pins on its RS232 interface. You can use the
camera's signal input/output to detect an opening door (using a Reed switch) or to
switch an external device (e.g. a lamp using a relay). The signal input/output pins
of the RS232 interface can be used for attaching additional sensors and devices.
3.8.1 Signal Input Pins
Pin 9 of the D Sub 15 HD connector is used for detecting the signal input. To trigger
the signal input, simply connect pin 5 (ground) to pin 9 (no current required). You
can also connect other devices (e.g. SPS machines) that close a contact (0V) to trig-
ger the signal input.
Click on Setup Menu > Event Settings to specify which state of the signal input
should create an event—an open loop or a closed loop. For example, if you would
like to secure all windows and doors of a building, connect all closed switches in a
serial loop and connect the wires to signal input (pin 9) and ground (pin 5). The
loop should have a resistance of less than 2 kOhms. This pin of the camera is al-
ready equipped with a low pass filter (10 kOhms/10 nF).
Open Setup Menu > Event Settings to activate the additional signal input pins of
the RS232 interface ( Closed/Low or Open/High option; CTS: pins 8-5, RxD: pins 2-
5). Open Admin Menu > Setup of serial interface and modem and configure the
serial interface accordingly (Serial: Data , Mode: I/O Mode ).
Click on Admin Menu > LED Setup and set one or more LEDs to Signal input to dis-
play the state of the input signal for testing ( Signal input option: loop closed = LED
on).
"0": Current higher than +3 V ==> inactive ==> LED off
"1": Current lower than 0.5 V ==> active ==> LED on
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