Setting The Detector Address - Edwards LaserSense Nano Installation Handbook

Appendix A: Communications card and APIC
Figure 15: RS-232 cable connections
(1) 9-pin female "D" connector
(2) 9-pin female "D" connector
A connected PC can access the detector event memory to review previous or
current events, such as detector alarms or faults. The detector internal chart
recorder can also be accessed to allow analysis of detector behaviour (refer to
the Remote Control User Manual for further information). The PC cannot be used
to configure the detector except to enter time and date settings for the detector
event log and chart recorder to be viewed in the remote control software. The
detector does not incorporate a real-time clock, so the time and date need to be
re-entered if the detector is powered down for any reason.
Installation of the communications card also provides the detector with RS-485
network communication via the A, B, and SCREEN terminals on the detector
main board (Figure 9 on page 19). This can be used for simple remote display
indication or integration into a larger site wide management and display system,
separate from the local fire detection and alarm system.

Setting the detector address

In order to identify itself to the command module or fire panel, each detector
needs to have a unique address ranging from 1 to 127. The detector address is
set using the DIP switch located at the optional communication board. The switch
settings are up for 1 and down for 0, and the detector address is set as a 7-bit
binary code (switch 8 equates to a value of 128 and so is outside the usable
address range).
Figure 16 shows an example where the address equates to "01100011" in binary,
or:
(1 x 1) + (1 x 2) + (0 x 4) + (0 x 8) + (0x 16) + (1 x 32) + (1 x 64) + (0 x 128) = 99
LaserSense Nano Aspirating Smoke Detector Installers Handbook 45