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• The Number of Channels Being Trend Recorded and the Fastest Recording
Interval
The fastest recording interval varies depending on the number of channels being
trend recorded. Only display or printout is possible on measurement channels or
computation channels that are not trend recorded.
Number of Channels Being Trend Recorded Fastest Recording Interval
6 channels or less 10 s
7 to 12 channels 15 s
13 to 18 channels 20 s
<Related Topics>
Changing the channel recording color: Section 9.13
Enabling/Disabling trend recording for each channel: Section 9.9
Printout
Various printouts can be executed in the same fashion as measurement channels.
The computed values of computation channels can be printed at constant intervals by
using the periodic printout timer or the two TLOG timers. The TLOG timers can be used
only on the computation channels. For the printout contents when printing using the
TLOG timer, see appendix 1.
<Related Topics>
Setting the periodic printout: Section 7.8, 9.6, and 9.15
Setting the printout using the TLOG timer: Section 9.6 and 9.12
Alarms
Up to 4 alarms can be assigned to each computation channel.
• The alarm types are high limit alarm (H), low limit alarm (L), delay high limit alarm (T),
and delay low limit alarm (t).
• Hysteresis can be specified to the values for activating and releasing the alarm. The
hysteresis applies only to high limit alarm (H) and low limit alarm (L). The hysteresis
width can be set in the range of 0.0% (Off) to 1.0% of the recording span in 0.1 steps.
The setting applies to all high limit alarms and low limit alarms. By default, the
hysteresis width is set to 0% (Off).
<Related Topics>
Setting alarms: Section 9.5
Setting the alarm delay function: Section 7.15 and 9.11
Setting the alarm hysteresis: Section 7.1
Display
Computation channels can be displayed on the VFD as with the measurement channels.
<Related Topics>
Setting the bar graph display mode: Section 9.16
Starting/Stopping Computation
Computation can be started or stopped using keys.
<Related Topics>
Starting/Stopping computation: Section 9.1
1.6 Computation Function (/M1 Option)