Siemens FEC920 User Manual page 78

Figure 65 shows a typical page.
Flash Size
Flash Duration
Enable
Interval
UHH Compression Select 'Normal' or 'High'. 'Normal' compresses the data, but still provides an exact copy.
Channel 1 to VirtualChan 30 (see note 2, below)
Suspend
Note: 1. Where very high values are involved, such as in some totalizer values, 'High' compression
may cause the value displayed at the instrument, and held in the history file, to be incorrect.
The problem may be resolved by changing to 'Normal' compression, or, in the case of a
totalizer, by re-scaling it (for example from MegaWatt hours to TeraWatt hours).
Note: 2. Virtual channels 1 to 15 are included in the standard build. Channels 16 to 30 are included
only if the Modbus Master and/or EtherNet/IP option is fitted.
Page 70
FEC920: USER GUIDE
Flash Size
Flash Duration
UHH Compression
Channel 1
Channel 2
Channel 3
Channel 4
VirtualChan 1
VirtualChan 2
VirtualChan 30
Suspend
Figure 65 Group trend recording configuration
Read-only. Shows the size of the Flash memory fitted in MB.
Read-only. Shows the time it will take to fill the Flash memory if the instrument
configuration remains unchanged.
'Yes' enables group recording so that all points set to 'Yes' are stored in the instrument's
flash memory. 'No' disables group recording.
Defines the rate at which data is saved to the instrument's Flash memory. The value
affects how much trace history appears on the screen in trend history mode.
'High' compresses more, but values are saved only to 1 part in 10
note 1, below.
Read-only (grayed 'yes') for points being trended, (these are automatically recorded). For
non-trending points the user may enable or disable each point individually.
Ignored unless the user has wired to this field. If wired then when set to 'No' recording is
active, when set to 'Yes' recording is paused.
A5E45696052A Rev-AA
Group.Recording
50.00
MB
17.06
Days
Enable Yes
Interval 1 sec
Normal
Yes
Yes
Yes
Yes
Yes
No
No
No
8
resolution. See also
September 18