Chapter 2 Devices 2_ 2-55 Special auxiliary Refresh time relay ON: inhibit all output. SM209 You set SM209 to ON, and the system automatically resets it to OFF. ON: the communication protocol of COM1 changes. SM210 You set SM210 to ON and reset it to OFF for COM1. ON: RTU mode OFF: ASCII mode SM211 You set SM211 to ON, and the system automatically resets it to OFF. ON: the communication protocol of COM2 changes. SM212 You set SM210 to ON and reset it to OFF for COM2. ON: RTU mode OFF: ASCII mode SM215 You set SM215 to ON and reset it to OFF. ON: the PLC runs. OFF: the PLC stops. SM218 The system checks the real-time clock at power-on. ON: real-time clock error You reset it to OFF.
SM219 The system monitors the battery power of the real-time clock. ON: real-time clock power is low The system resets it to OFF. SM220 You set SM220 to ON and reset it to OFF. ON: calibrating the real-time clock within ±30 seconds SM221 The flag is refreshed according to the settings in HWCONFIG or when the DST instruction (API 1607) is executed. ON: the DST instruction is executed. SM230-SM261 The flag is refreshed according to the settings in HWCONFIG; you can redefine this setting. SM270–SM275 The flag is ON when the CSFO instruction is executed. ON: enable reversing the input direction OFF: disable reversing the input direction SM281–SM288 You set the flag to ON and reset it to OFF. ON:
counting down OFF: counting up SM291–SM296 You set the flag to ON and reset it to OFF. ON: enable clearing the input points OFF: disable clearing the input points SM300 You set the flag to ON and reset it to OFF. ON: counting down OFF: counting up SM301–SM303 The system sets the flag to ON and reset it to OFF. ON: counting down OFF: counting up SM304 You set the flag to ON and reset it to OFF. ON: counting down OFF: counting up SM305–SM307 You set the flag to ON and reset it to OFF. ON: counting down OFF: counting up SM308 You set the flag to ON and reset it to OFF.