User`s guide

Data Storage Configuration
Overview of Data Storage Enable Conditions
Release E UMC800 Control Builder User’s Guide 187
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Overview of Data Storage Enable Conditions
How storage is enabled
Introduction
Data Storage enable/disable is an operator interface function. If a schedule is developed in the Control
Builder, all storage is automatically enabled.
Enable controls
Figure 51 shows the controls that must be enabled for each storage mode and data type.
The left side shows the three data types and their possible storage modes (only one storage mode is in effect
for any data type). The arrows show the conditions required for that storage to take place.
For example, trend batch storage requires:
1. the Trend Storage Control to be on
(enabled at configuration – if any signal is selected for storage i.e. Signal Enable = NONE),
2. the Batch Command Control to be on (enabled at configuration), and
3. the Data Storage Control to be enabled (enabled at Operator Interface).
Notice that the Batch Command Control applies only to batch storage mode.
Trends
Storage Mode = Batch
Trends
Storage Mode = Continuous
Point Log
Storage Mode = Batch
Point Log
Storage Mode = Continuous
Alarms/Events
Storage Mode = Batch
Alarms/Events
Storage Mode = Continuous
Point Log
Storage Mode = On Command
Batch Command =
Enable
(with digital signal or
Storage Control menu)
Data Storage = Enable
(with Storage Control menu)
S
T
O
R
A
G
E
I
N
E
F
F
E
C
T
Trend Storage = Enable
(with digital signal or
Storage Control menu)
Point Log Storage =
Enable
(with digital signal or
Storage Control menu)
Alarms/Events Storage =
Enable
(with digital signal or
Storage Control menu)
Figure 51 Required enabled controls for storage