i-on Range
The System Bus
Page 27
Figure 8 shows the zone numbering when an EXP-R30 forms part of the
system.
Figure 8. Zone Numbering with EXR-30.
In the i-on160EX and i-on50EX the EXP-R30 takes three consecutive bus
device addresses, and the zone numbers occupy a contiguous block of 30. In
an i-on30EX the EXP-R30 takes two consecutive bus device addresses, and the
zone numbers occupy a contiguous block of 20.
Adding/Removing Expanders and Zone Numbering
At some point after the initial installation you may wish to replace one of the
expanders:
You can replace an EXP-R30 with up to three EXP-R10 or EXP-W10
expanders. The control unit will use the three bus device numbers that were
allocated to the EXP-R30.
If you wish to add an EXP-R30 but there are not three spare device
numbers next to each other, then the control unit will not let you add the
device.
Zone 000
Connection point P0<00<00 (the first zone terminal on the control unit PCB) is
available for use as a valid zone. However, please note that SIA cannot report
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