Chapter 5  Device 
5-5 
5.1.4  Latched Areas in the Device Range 
Device  Function  Device range  Latched area 
X 
Input relay  X0–X63  All devices are non-latched. 
Y 
Output relay  Y0–Y63  All devices are non-latched. 
M*
1
 
Auxiliary relay  M0–M8191  The default range is M6000–M8191. 
SM 
Special auxiliary relay  SM0–SM2047 
Some devices are latched and cannot be 
changed. 
Refer to the list of special auxiliary relays for more 
information.
 
S*
1
 
Stepping relay  S0–S1023  The default range is S512–S1023 
T 
Timer    T0–T511  All devices are non-latched. 
C*
1
 
Counter  C0–C511  The default range is C448–C511 
HC*
1
 
32-bit counter  HC0–HC255  The default range is HC128–HC255 
D*
1
 
Data register 
D0–D29999  The default range is D20000–D23999 
W0–W29999  Use this for editing in ISPSoft only. 
FR 
File register  FR0–FR65535  All devices are latched. 
SR 
Special data register  SR0–SR2047 
Some are latched and cannot be changed. Refer 
to the list of special data registers for more 
information. 
E 
Index register 
E0–E9  All devices are non-latched.
 
E10–E14  Use this for editing in ISPSoft only. 
*1: For the latched area setups, see HWCONFIG in ISPSoft. Setting the latched area means the other areas 
show as non-latched areas. The range of latched areas cannot exceed the device range. For example, if 
you set the M600–M7000 as latched areas, M0–M5999 and M7001–M8191 become non-latched areas.