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NORMAL OPERATION
Touchpoint Pro
Pt. No. 2400M2566_1_EN
34
Operating Manual
Function
User Level
Comment
Inhibit
Engineer
Use this option to
Inhibit
the channel. Once selected this option changes to
Clear Inhibit
.
Force
Engineer
Use this option to
Force
a relay output channel to its active state. Once selected this
option changes to
Clear Force
. See
Ch. 12.3 and 12.4
for more information. The channel
status changes to Fault.
Force
Deactivate
Engineer
Use this option to
Force
a relay output channel to its deactivated state. Once selected this
option changes to
Clear Force
. See
Ch. 12.3 and 12.4
for more information. The channel
status changes to Fault.
Table 10.
Inhibit / Force Options
5.9
How to View the Trend Graph
The trend graph shows the history of the signal on an analogue input channel. The signal value is logged when it changes,
or every one hour if there is no change.
Note
: TPPR does not adjust automatically for daylight savings time. Be aware that if the date and time are changed to a time
in the past, (for example ending daylight savings time) TPPR will retain a backup of the previous data.
Note
: TPPR logs the trend data point when the system is in Field Inputs Test Mode, but does not log it when in the
Configuration Settings Test or Cause and Effect Test modes.
Note
: The system logs when the value changes, with a resolution determined by the gas range of the channel. For a gas
range of less than 10, the resolution is 0.01, for a gas range of 10 to 99 the resolution is 0.1, and for a gas range of 100 or
more, the resolution is 1.
Note
: The display may not show negative values. If negative values are suspected, due to zero drift or an input fault, use the
Trend Graph Settings icon to offset the Y axis zero.
5.9.1
To View the Trend Graph
1. From the
System Status
screen navigation bar, select the
Inputs
icon.
2. A list of all input channels is shown in order of
Channel ID
.
3. Select the required channel, and select
Trend Graph
from the popup menu.
4. The trend graph will be displayed.
5. Use the forward and backward arrows to scroll through the graph. Expand or reduce the axes using the X+, X-, Y+
and Y- buttons.
If there are more data points than the number of pixels available on the screen, TPPR will display the maximum value within
each set of points. This is the
MaxLine
. (For example, if one pixel needs to represent 12 seconds, it will display the
maximum value that occurred during those 12 seconds.) If you toggle to
MinLine
, TPPR will display the minimum value
within each set of points.
Note
: Webserver (if used) will by default display both
MaxLine
and
MinLine
. This can be changed to show only
MaxLine
,
only
MinLine
or both.
Figure 38.
Trend Graph Screen