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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