Appendix 10 System Memory List 
Address   Classification   Function  
$SW9 Notification/control Pop-up screen 3 display position (Y coordinate)  
$SW10  Notification/control  Display label number 
$SW11 Control  Destination (0: Printer/1: Memory Card) 
$SW12  − Reserved 
$SW13  Control  Password number for input prohibit clear  
$SW14  Notification  Current time (min, s)  
$SW15  Notification  Current date and time (day, hour)  
$SW16  Notification  Current date (year, month)  
$SW17  Notification  Current day (day of the week)  
$SW18  Notification  No. of generated alarms and events  
$SW19  Notification  ID number for generated alarms and events  
$SW20  Notification  ID number for cleared alarms and events  
$SW21  Notification  Alarm/event ID when alarm/event object macro executed  
$SW22  − Reserved 
$SW23  Notification  Macro execution error number  
$SW24  Notification  Macro error screen number  
$SW25  Notification  Macro error object ID number  
$SW26  Notification  Error macro execution timing  
$SW27  Control  Offset value for index I0  
$SW28  Control  Offset value for index I1  
$SW29  Control  Offset value for index I2  
$SW30  Control  Offset value for index I3  
$SW31  Control  Offset value for index I4  
$SW32  Control  Offset value for index I5  
$SW33  Control  Offset value for index I6  
$SW34  Control  Offset value for index I7  
$SW35  Control  Offset value for index I8  
$SW36  Control  Offset value for index I9  
$SW37  Notification/control  Data Log Group Number 
$SW38  Notification  Data Block Error Number  
$SW39 Notification  Authentication level 
    The notification words are not write prohibited. In addition, the system will not restore values, 
except when the status has changed. 
 
System word memory is allocated to PLC areas as shown below. 
Allocated Addresses for System Memory can be displayed by selecting PT – System Set-
tings in the CX-Designer and clicking the Initial Tab. 
 
$SW = n 
Word n: $SW0 
 
Word n+1: $SW1 
 
 
 
Word n+39: SW39
 
 
 
 
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