Sigma_CP_Australian Interface Module.doc
Page 7 of 9
To terminate the data cable correctly,
the last board on the comms line must
have jumper J2 fitted as shown.
For the position of J2 on other panels or
boards refer to the relevant manual.
After the AIM has been connected to
the main panel, the main panel has to
“learn” that it exists. This is necessary
so that the main panel can announce a
fault condition if the AIM becomes
disconnected.
To “teach” the main panel that an AIM is
connected, ensure that all other boards
have the data cable connected with the
correct polarity. Check that all boards
are supplied with power and that the
green, OK LED is lit at each one.
Press the processor reset switch on the
main panel PCB. The main panel will
display the address of the first board it
finds on the seven segment LED display
such as.
o1
This indicates ancillary board 1 (o1). To accept this, the enter button on the main panel should be
pressed whereupon, if more boards are found, their addresses will be displayed and must be
accepted by pressing the enter button once again. This is repeated until all of the boards are
recognised by the main panel. The AIM is fixed at ancillary board address 7 and will appear on the
display as
o7
If any board becomes disconnected after it has been “learnt” by the main panel, the main panel will
display a comms fault and the number of the board will be shown on the seven segment LED
display.
The board/s that have become disconnected from the main panel will also display a comms fault
on their COMMS LED.
Figure 4-Comms terminating jumper on the AIM
