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The 120 Ω end-of-line resistor must be placed at the end of the line. This simply involves switch
#8 being moved to the ON position on the last module (cf. Fig. 5).
No portion of the bare end of the terminal wires should be visible. For protection
against any electromagnetic disturbances, the data as well as screen wires (or
braids) must be cut as short as possible.
Before connecting the detector to the control unit, please disable any installation alarms to avoid
unexpected triggering during operation.
The connection of the cable between the detector and controller should be made
with the power off. The site should be at equal potential.
Connection is made according to the following schematic:
Ground
terminal
Figure 3: Schematic for connecting modules on a MX 43 or MX 32v2 line
2.5 Configuration of communication
Module address
All the digital modules on a line must be identified by a unique
address.
Switches 1 to 5 of the configuration block of each module
make it possible to establish an address number (1 to 32) in
binary mode.
In the illustration to the right, the address 9 (10010) has been
defined.
Addressing Table
The
below lists the possible combinations.
(ON = 1 ; OFF = 0)
NPO10NGB
Revision J.1
Controller line terminal
Detector terminal
Switches
OLCT 10 N
DIGITAL GAS DETECTOR
USER MANUAL
Figure 4: Switches for address
configuration
Switches
(ON = 1 ; OFF = 0)
5
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