FEC920: USER GUIDE
Page 34
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September 18
5.4.6 Alarm Panel
Mode
This display appears only if enabled in the Instrument Display configuration (Section 6.1.3). Alarm panel mode
shows current value and alarm status for each channel enabled in the Trend Group. The status is shown in two
ways, by the color of the relevant bar, and by the alarm status indicators.
Figure 23 Alarm panel display (six channels)
The figure above shows an example where the Trend group contains six channels. Figure 24 shows how the
display appears for trend groups with fewer than six channels configured.
Figure 24 Alarm panel display layouts for trend groups with fewer than six channels
5.4.7 Modbus Master display mode
This display mode consists of two pages, as shown in Figure 25.
Page one opens by default and shows the first eight parameters being read from (left pointing arrow) or written
to (right pointing arrow) the relevant slave. These items are configured in the Modbus Master configuration
described in Section 6.6. Hidden parameters may be viewed by operating the scroll key, then using the arrow
keys to scroll through the list. A green arrow means that the item may be edited by the user when logged in.
A pair of animated indicators in the top left-hand corner of the screen show the connection status of the
two possible slaves. A green moving ‘streak’ indicates that successful communications are being carried
out. A red flashing circle indicates that there is a break in the transmission line or that the slave is switched
off. A gray, non-animated display indicates that the slave has not yet been configured as a part of the
communications link (i.e it is ‘off line’).
A ‘traffic light’ indicator appears to the right of each parameter. Green indicates that the parameter is being read
from or written to successfully. Orange indicates that a write of the value is pending. Red indicates that there is
an error and that no value is currently being read or written; the value displayed is the last good value read or
written depending on whether the data item is a read or write. If the indicator is black, the parameter is ‘off’.
Operation of the scroll key highlights the page symbol in the top right-hand corner of the screen, and a further
operation of the scroll key calls page two to the screen.
Red bar
Alarm 2 is active, or alarm 1
and alarm 2 are both active.
Amber bar
Alarm 1 is active for this
channel, but not alarm 2.
Green bar
Neither alarm 1 nor alarm two
active for this channel.
Alarm type indication (Figure 9)
Inst name
6 channels
5 channels
4 channels
3 channels
2 channels
1 channel
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