
Connection of the control devices
The control devices control both the basic and advanced options.
The keypads control all the Omnia8 and Omnia4 options. The key readers
control the basic options only: Arm/Disarm.
Control devices: keypads and key readers
Keypads and key readers have the same electrical connections. Both can
be connected to the 4 wire parallel bus connected to Main Unit terminals
1[+], 2[C], 3[R] and 4[--].
Up to 16 remote devices (key readers/keypads) can be connected to the
bus, with a maximum of 8 keypads including the one supplied.
+
At least one Keypad must be connected to the system.
Electrical
connections
Keypads and key readers must be connected in parallel to the communica-
tion bus: terminals 1[+] and 4[--] supply power; terminals 2[C] and 3[R] con-
stitute the data exchange bus.
Figure 9 illustrates the connection of 3 control devices (keypads or key
readers).
Device Address Keypad addresses are assigned by means of dipswitches 2, 3 and 4 on
the dipswitch board (22). Key reader addresses are assigned by means of
dipswitches 1, 2, 3 and 4 (31).
Figure 9 Connection of control devices (keypads and key readers)
INSTALLATION 21
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