4-1 System Memory
4-3
Address
Classification Function
NSA
Series
Non-NSA
Series
$SB41 Control Log Macro Operation OK OK
$SB42 Notification/Control Initialize Error Log OK OK
$SB43 Notification/Control Save Error Log OK OK
$SB44 - Reserved NO NO
$SB45 Control Macro Error Dialog Control OK OK
$SB46 Notification Macro Error Notification OK OK
$SB47 Notification History Processing Error Flag OK OK
$SB48 Notification Memory Card Free Space Check Flag OK OK
$SB49 Notification/Control Stop Memory Card OK OK
$SB50 Notification Memory Card Removing Status OK OK
$SB51 Notification Periodical Data Log Save in Process Flag OK OK
$SB52 Notification Data Block Operation Complete Flag OK OK
$SB53 - Reserved NO NO
$SB54 Notification Password Level 1 Operable Status OK OK
$SB55 Notification Password Level 2 Operable Status OK OK
$SB56 Notification Password Level 3 Operable Status OK OK
$SB57 Notification Password Level 4 Operable Status OK OK
$SB58 Notification Password Level 5 Operable Status OK OK
$SB59 to
$SB62
- Reserved NO NO
$SB63 Control Exit NS-Runtime OK OK
Note: The notification bits are not write-prohibited. Also, the system will not restore values, except
when the status has changed.
System memory is allocated to PLC areas as shown below.
Allocated Addresses for System Memory (Under CX-Designer PT – System Setting –
Initial)
$SB = m
Operations of system bit memory different from those of the NS Series are described below.
For other system bit memory, refer to 2-4 System Memory in the NS Series Programming
Manual.
System bit memory Description
$SB4 (Battery Low) $SB4 cannot be used with NS-Runtime.
$SB6 to $SB8 (Brightness
Adjust)
$SB6 to $SB8 function only with the NSA Series.
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