Smoke Alarm User Manual

Installation, Operation and Maintenance Manual
Issue 1 Page 8-5
February 2001
Table 8.4 Intelligent Interface Module to Termination Board Communications Problems
Symptom Corrective Action
1. Check the LK1, LK2 and LK4 jumpers on the termination board. They
must be shorting the two pins closest to the centre of the board.
2. Check the RS485 loop wiring.
3. If using a stand-alone IIM, be sure that the LaserNET software is set to
monitor each Detector correctly. From the Setup menu select
Setup>Detectors. The address of each Detector must be selected. Also,
the Alarm and Trouble Monitoring box should be checked.
Loss of Communications
between IIM and
Protected zones
4. Check the programmed address of each termination board to ensure that
it corresponds to the binary equivalent of the address. Zero is not a valid
address.