Delta AH500 - Latched Areas in the Device Range

Chapter 2 Devices
2-5
Device type
PLC action
Non-latched
area
Latched
area
Output relay
RUN→STOP
Retained Retained Retained
SM204 is ON.
(All non-latched areas are cleared.)
Cleared Retained Cleared
SM205 is ON.
(All latched areas are cleared.)
Retained Cleared Retained
Default value
0
0
0
2.1.4 Latched Areas in the Device Range
Device
Function
Latched area
X
Input relay
All devices are non-latched.
Y
Output relay
All devices are non-latched.
M*
Auxiliary relay
The default range is M0~M8191.
SM
Special auxiliary
relay
Some devices are latched, and cannot be changed.
Please refer to the list of special auxiliary relays for more
information.
S
Stepping relay
All devices are non-latched.
T*
Timer
The default range is T0~T2047.
C*
Counter
The default range is C0~C2047.
HC*
32-bit counter
The default range is HC0~HC63.
D* Data register
AH500-EN/RS2: The default range is D0~D16383.
AH501-EN/RS2: The default range is D0~D24575.
The default range is D0~D32767.
At most 32768 devices can be latched areas.
SR Special data register
Some are latched, and can not be changed.
Please refer to the list of special data registers for more
information.
L
Link register
All devices are non-latched.
E
Index register
All devices are non-latched.
*: * indicates that users can set the range of latched areas, and that the device can be set to
Non-latched Area. The range of latched areas can not exceed the device range. Above all, only
32768 data registers at most can be non-latched areas. For example, users can set D50~D32817
or D32768~D65535 to Latched Areas although the default range of latched areas is D0~D32767.