Tyco F3200 - Bell Isolate;Network Silence Operation

Document No: LT0119 F3200 Operator's Manual
Network Systems
Issue 2.04 29 July 2002 Page 11-7
11.4 BELL ISOLATE/NETWORK SILENCE OPERATION
Depending on programming, the bells at an F3200 or NDU may be turned off (silenced)
by either "local bells isolate" or by a network silence state received from other devices on
the network.
"Local bells isolate" is a state which is controlled by the bells isolate key on the keypad.
When local bells isolate is true, the bells isolate LED is on steady.
"Network Silence" is a state received from other devices on the network which, when
true, may also keep the local bells from operating (depending on programming).
If the bells are isolated due to a network silence state then the bells isolate LED will flash
(1 second on, 1 second off).
A panel will transmit a state of network silence onto the network whenever "local bells
isolate" is true and it has been programmed to do so, i.e. isolating the bells locally may
cause a network silence to be sent onto the network which may be used by other
devices to silence their own bells.
For New Zealand mode, the bell outputs can also be silenced by activation of a
Silence Alarms Keyswitch.
Bells Isolate LED
On Steady: Bell outputs locally isolated.
Slow Flash: Bell outputs inhibited by network silence.
Flash at 2Hz: A Silence Alarms Keyswitch is activated (NZ only).
Off: Local bell outputs, if any, will operate for alarm.
The ANCIL ISOL key may be used at the base display to also show the bells isolate
state.
"isol" means the bells are locally isolated.
"netsil" means network silence is true.
This panel may also allow its local bells isolate state to be controlled by other devices on
the network by accepting bells isolate or bells de-isolate commands from the devices.
F3200 or NDU without a local bell output
For an F3200 or NDU without a local bell output, the local bells isolate state is still
meaningful because it may be used to send a state of network silence onto the network.
Similarly, the local bells isolate LED is also still meaningful.