LSIS XEC-DR64H User Manual

Chapter 5. Program Configuration and Operation Method
5-26
5.4.2 Data memory
Contents and size of data memory are as follows.
Item Size
Data memory entire area 256 KB
System area :
 I/O information table
 Forced I/O table
 Reserved area
143 KB
Flag area
System flag (F) 2 KB
Analog image flag (U) 1 KB
Internal special flag (K) 8 KB
High speed link (L) 4 KB
P2P flag (N) 10 KB
Input image area (%I) 2 KB
Output image area (%Q) 2 KB
R area (%R) 20 KB
Direct variable area (%M) 16 KB
Symbolic variable area (maximum) 32 KB
Stack area 16 KB
5.4.3 Data retain area setting
In case you want to keep the data necessary for operation and the data made during operation when PLC
stops and restarts, Default(automatic) Variable Retain is used and some area of M area can be set as Retain
area through parameter setting
The following is characteristic table about the device available for Retain setting
Device
Retain
setting
Characteristic
Default
O
As for automatic variable area, Retain setting is available
M
O
As for internal contact point area, Retain setting is available at parameter
K
X
In case of power failure, contact point is kept
F
X
System flag area
U
X
Analog data register (Retain is not available)
L X
High speed link/P2P service status contact point of communication module
(Retain is available)
N
X
P2P service address area of communication module (Retain is available)
R
X
Flash memory dedicated area (Retain is available)
Remark
1) K, L, N, R devices are retained basically.
2) K, L, N devices can be deleted through “Clear PLC” of XG5000 online menu.

LSIS XEC-DR64H Specifications

General

Brand	LSIS
Model	XEC-DR64H
Category	Controller
Language	English