Omron NX701-1620 User Manual

5 Other Functions
5-6
NJ/NX-series Database Connection CPU Units User’s Manual (W527)
5-2-4 Memory Area Used by the Spool Function
The following provides the memory areas that are used by the Spool function. The memory area
differs for the NX-series Controllers and NJ-series Controllers.
NX701-@@20
The following memory area is used by the Spool function.
Memory area
Description
Dedicated area
for the Spool
function
The unsent SQL statements are
stored in
the dedicated area for the
Spool function.
 Total capacity of Spool memory:
NX701-@@20: 2 MB max.
 Spool capacity for each DB Connection:
Total capacity is equally divided by DB Connections
for which the Spool function is enabled.
You can prevent losing the SQL statements stored in the Spool memory even if a power
interruption occurred in the CPU Unit because the dedicated area for the Spool function is
non-volatile memory.
Precautions for Correct Use
 The data in the dedicated area for the Spool function is retained by a battery.
If the battery is not mounted or weak, the CPU Unit detects a Battery-backup Memory
Check Error. In that case, the Spool data is cleared.
 The spool data will be cleared in the following cases:
(a) When Use is selected in the Spool Settings and the project is downloaded. In this
case, the spool data will be cleared regardless of the Spool Settings of the project to be
downloaded.
(b) When restoring backup data.

Omron NX701-1620 Specifications

General

Brand	Omron
Model	NX701-1620
Category	Controller
Language	English