Trigger Inputs And Digital Inputs - Siemens SISTORE MX Installation Manual

7.1.1

Trigger inputs and digital inputs

Siemens Building Technologies
Fire Safety & Security Products
Pin assignment
RS-485 socket
PIN 1: NC
PIN 2: A (TX+ / RX+)
PIN 3: A (TX+ / RX+)
PIN 4: NC
PIN 5: GND
PIN 6: NC
PIN 7: NC
PIN 8: NC
PIN 9: NC
The DVR has an internal optocoupler board which feeds the TTL-compatible inputs
of the SISTORE MX through optocouplers and allows switching of signal levels up
to 24 V.
The inputs of the optocoupler board are designed for a voltage range of 5 to 24 V.
If connecting inductive consumers, we recommend using suitable suppressor
circuits.
SISTORE MX provides 32 trigger inputs and 8 digital inputs. The former are edge-
triggered inputs. You can determine by way of the software (RemoteView and
SISTORE MX application) whether the input level changes from low to high or from
high to low.
The technical details are described as follows:
Optocoupler input circuits
U1
Optokopler
Fig. 3 Optocoupler input circuit (pin assignment as example)
The 8 digital inputs can be used for controlling external events.
SISTORE MX connections and displays
Baugruppe
R
V
+
1K2
Digital In
–
5 - 24 V
67
07.2005