Honeywell VRX180 Starting and stopping storage, Storage Start/Stop Controls, Prompt Comments

Online Operation Using Menus

Starting and stopping storage

Data Storage can be started and stopped three ways. At the highest level, the ENABLE STORAGE menu item enables or disables all data storage. At the next highest level, EXTERNAL ENABLE enables or disables storage for each file type (Trends #1-3, Alarms, Events, Diagnostics, Unit Data). At the lowest level, storage for each file type is started and stopped with one of two controls: a menu item BATCH STATE or a discrete parameter BATCH CONTROL.

Table 7-4 describes each method of starting and stopping storage.

	Table 7-4 Storage Start/Stop Controls
Prompt	Comments
ENABLE	Acts as a master enable/disable switch for all data storage. Select this item from the
STORAGE	DATA STORAGE menu. Set to ENABLE to allow storage of the current schedule. If this
	is set to DISABLE, online data storage cannot take place, even if storage for
	individual files is enabled with EXTERNAL ENABLE.
EXTERNAL	Acts as a enable (high)/disable (low) switch for each storage file type (trends, alarms,
ENABLE	events, diagnostics, unit data). Any storage file whose external enable is configured with
	a discrete will start and stop according to the state of that discrete. This works
	independently of batch storage.
BATCH	Acts as a start/stop switch for each storage file type. The ENABLE STORAGE and
STATE	EXTERNAL ENABLE both must be enabled for BATCH STATE to function.
	Accessed under DATA STORAGE menu. If batch storage mode is configured for any
	storage file and if BATCH CONTROL has not been configured with a discrete, then you
	can manually start/stop the batches using this selection. The instrument will automatically
	assign a number internally to identify the batch for storage. For example, data stored
	between the first start and stop is marked as Batch #1. When the next batch starts, the
	instrument will increment the batch number. These numbers identify the batches for later
	retrieval.
BATCH	Accessed under SET UP NEW SCHEDULES. If this item is configured with a discrete, it
CONTROL	will start and stop storage for all storage files configured with batch storage mode. The
	ENABLE STORAGE and EXTERNAL ENABLE both must be enabled for BATCH
	CONTROL to function. The instrument will automatically assign a number internally to
	identify the batch for storage. For example, data stored between the first start and stop is
	marked as Batch #1. When the next batch starts, the instrument will increment the batch
	number. These numbers identify the batches for later retrieval.
BATCH	Accessed under DATA STORAGE. Shows the number (1-255) of the active batch. The
NUMBER	batch number is assigned automatically by the instrument when the batch is started by
	either method (BATCH CONTROL or BATCH STATE).

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