Delta AS Series Programming Manual page 90

Special auxiliary
relay
OFF: the PLC stops.
The system checks the real-time clock at power-on.
SM218 ON: real-time clock error
You reset it to OFF.
The system monitors the battery power of the real-time clock.
SM219 ON: real-time clock power is low
The system resets it to OFF.
You set SM220 to ON and reset it to OFF.
SM220
ON: calibrating the real-time clock within ±30 seconds
The flag is refreshed according to the settings in HWCONFIG or when the DST instruction (API
1607) is executed.
SM221
ON: the DST instruction is executed.
SM230-SM261 The flag is refreshed according to the settings in HWCONFIG; you can redefine this setting.
The flag is ON when the CSFO instruction is executed.
SM270–SM275 ON: enable reversing the input direction
OFF: disable reversing the input direction
You set the flag to ON and reset it to OFF.
ON: counting down
SM281–SM288
OFF: counting up
You set the flag to ON and reset it to OFF.
SM291–SM296 ON: enable clearing the input points
OFF: disable clearing the input points
You set the flag to ON and reset it to OFF.
SM300 ON: counting down
OFF: counting up
The system sets the flag to ON and reset it to OFF.
SM301–SM303 ON: counting down
OFF: counting up
You set the flag to ON and reset it to OFF.
SM304 ON: counting down
OFF: counting up
You set the flag to ON and reset it to OFF.
SM305–SM307 ON: counting down
OFF: counting up
You set the flag to ON and reset it to OFF.
SM308 ON: counting down
OFF: counting up
You set the flag to ON and reset it to OFF.
SM309–SM311 ON: counting down
OFF: counting up
You set the flag to ON and reset it to OFF.
SM312 ON: counting down
OFF: counting up
You set the flag to ON and reset it to OFF.
SM313–SM315 ON: counting down
OFF: counting up
You set the flag to ON and reset it to OFF.
SM316
ON: counting down
Refresh time
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