93-520-20 Issue 3.3
Page 51 of 60
CirrusPro Engineer’s Manual
5.0 Networking
The Cirrus Pro Network is based on Node Numbers in ranges allocated to specific devices:
The system allows:
1 PC Unit
Network Number 1
32 Detector Units
Network Numbers 224 to 255
Default 255
32 Display Units
Network Numbers 97 to 128
Default 128
Refer to the example system below:
The network will not function correctly until all the devices have been set up.
It is usual to Connect Node numbers to those housed in the same enclosure, though not a necessity.
Setting Up Detector Nodes
Because the devices are manufactured with the default node numbers, it is necessary to set these up
individually with a direct connection to a PC, with the rest of network disconnected. See section 3.2.
After starting the CirrusPro PC software, the unit will be found at Node 255. Select it and enter the
high security when prompted (123456 default). Data will then be uploaded. Select the Network tab and
set the network Node number as required. See Section 3.2.5.
The unit can then be reconnected to the network and the process repeated for all detector units.
Setting the numbers from highest to lowest facilitates finding detectors faster as the system searches
the network in reverse order.
Setting Up Display Nodes
Display unit’s network numbers are allocated on the display unit from the Network Setup menu and
must be consecutive, numbered down from 128 (128 must be present). See Section 3.4.
Display
128
Detector
253
Remote
Display
124
Display
126
Detector
254
Remote
Display
127
Detector
251
PC
Detector
255
Detector
252
Display
125
1
