LSIS XBC-DN40SU - Data Latch Area Setting

Chapter 5 Program Configuration and Operation Method
5- 35
5.5.3 Data latch area setting
When PLC stops and restarts the data required for operation or the data occurred during operation, if you
want to keep and use those data, data latch can be used and it is available to use a certain area of some
data device as latch area by parameter setting.
The below shows the features for latch device.
Device
1
st
latch
2
nd
latch
Features
P
X
X
Image area to save the state of I/O device
M
O
O
Internal device area
K
X
X
Device keeping the device state during power shutdown
F
X
X
System flag area
T
O
O
Timer related area (Bit/words both)
C
O
O
Counter related area (Bit/words both)
S
O
O
Relay for step control
D
O
O
General words data save area
U
X
X
Analog Data Register (latch disabled )
L
X
X
High speed link/P2P Service state device of communication
module (latch enabled)
Z
X
X
Index dedicated Register (latch disabled)
R
O
O
File register (latch enabled)
Remark
▪ K, L, R devices are basically latched.
(1) Latch area setting
(a) Click Device Area Setup of Basic parameter settings.
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