Burnside T9 series, Руководство пользователя

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Contents Introduction Operation Further information Installation Index page 34
Appendix 3: Using the input/output channels
The Burnside unit features a link port which allows it to connect to
external devices and either send, or respond to, switched signals.
Combining neatly with the communication features of the unit, the
switched output can be triggered by specially formatted SMS mes-
sages, while the inputs can be made to trigger outgoing SMS mes-
sages when certain conditions are met.
This section deals with menu configuration aspects of the link port,
for details about physical connections, please see the
Connecting to
external devices
section.
The link port has two channels:
• Channel 1 can be configured as either an input or output,
• Channel 2 is permanently set as an input.
You can control aspects of this feature using either button presses
(as discussed below) or
using remote text commands
.
Controlling this feature using phone button presses
Channel (input or output)
(
0#5410
)
• Polarity (
0#54110
) - Determines how the condition logic (i.e. ‘true’
- action required or ‘false’ - no action required) relates to the
electrical input/output state (i.e. low or high voltage). This option is
also used to enable/disable the channel. Options are ‘Not used’,
‘True=High’ or ‘True=Low’.
• Input or Output selection (
0#54120
) - Determines whether chan-
nel 1 should operate as an input or an output.
• Text to send (
0#54130
) - Uses the normal SMS editing method to
create a message and number to call when the input condition is
met.
•
Test connection
(
0#54140
) - Displays the current input condition
or allows the output to be toggled to test the connection.
Channel 2 (input only) (
0#5420
)
•
Polarity
(
0#54210
) - Determines how the condition logic (i.e. ‘true’
- action required or ‘false’ - no action required) relates to the elec-
trical input state (i.e. low or high voltage). This option is also used
to enable/disable the channel. Options are ‘Not used’, ‘True=High’
or ‘True=Low’.
• Voltage level (
0#54220
) - Use this option to select the input volt-
age level that should form the threshold between the ‘true’ (action
required) or ‘false’ (no action required) logic states. This option
offers a range of between 0.5 volts and 4.5 volts in 0.5 steps. The
setting of the channel 2 Polarity option (
0#54210
) determines the
relationship between the two logic states and the two sides of the
threshold voltage level. Setting the voltage level to 2.5V will effec-
tively provide the same facility as a CMOS digital level detector.
• Text to send (
0#54230
) - Uses the normal SMS editing method to
create a message and number to call when the input condition is
met.
• Test connection (
0#54240
) - Displays the current input condition.
Note: The test connection options (
0#54140
and
0#54240
) refer
to the physical levels of the channels, e.g. low, high, 2.5v, etc.
However, if you use the remote status command (see
Appendix 4
- Remote commands
), the channel conditions will be reported as
their logical conditions with respect to the polarity that has been
set, i.e. true or false.
Tip: If you need to send an SMS message to two different loca-
tions for a single event, connect both channel inputs together but
store different contact numbers for each channel.
continued