10
Setting Unit Address ID
***** Skip this section if RS485 or Remote annunciator are not used ******
On PT900-12R Termination board two jumper J1 and J2 located on upper left
corner are used for extended module address. Proper jumpers are requied if
remote annunciators are connected or RS485 Port is used. These jumpers
assign a unique address to a rack with control modules. Two jumper selection
can provide up 48 distinct control module addresses in four (4) PT900-12R
monitors. The following table gives jumper selections for proper addresses.
J1
J2
Monitor Rack #
Module / Channel #
OFF OFF
1
CH1 – CH12
ON
OFF
2
CH13 – CH24
OFF
ON
3
CH25 – CH36
ON
ON
4
CH37 – CH48
Modifying Control Module Address:
The control module address can be changed from its default address.
Remember that all control modules in the control panel must have sequential
and distinct addresses to communicate properly with the remote annunciator.
To change the module address follow the steps below.
1.
Position the toggle switch on the front panel of the control module to
“
NORMAL
”.
2.
Press and hold the pushbutton switch for few seconds and the module will
display the current address. To change the address push and hold the
switch until the desired address is displayed. The address rolls over to 0
after 99.
3.
Release the switch. The module saves the address into its non-volatile
memory. The address is retained until modified again.
