Chapter 3 PLC System Configuration & Settings note if the setting value of scan time is greater than the setting value of Setting Watchdog Time, there will be a timeout error once the CPU operates . Setting Watchdog Time The parameter sets a timeout during which the program is scanned. The CPU module will send an error if the program execution exceeds the time. Show Battery Low Voltage Error The parameter sets whether the alarm is shown when the lithium battery for the real-time clock is of low voltage or is not installed in AS series. Disable: The function is closed. Enable: There is an alarm when the lithium battery is of low voltage or not installed.
Save Error history into The parameter sets the location to store error logs. error logs, the oldest error log will be overwritten by the latest error log. PLC: The error logs are stored in PLC. Twenty error logs at most can be stored. If there are more than twenty PLC & SD Card: The error logs are stored in PLC and SD card. There are more than twenty error logs, the oldest error log will be moved to the SD card before the oldest error log is overwritten. 。 COM Communication Error Record The parameter sets whether to enable the error record when there is an error at COM port. Disable: The function is closed. Enable: The error record function is enabled.
Select Action When 24Vdc Input Unstable What to do when the 24Vdc power is unstable Continue Running when power stable: waits till the power is stable and then PLC begins to run. 3-87