Chapter 2 Devices 2_ 2-59 Latched Attribute Default OFF STOP RUN SR Function ON RUN STOP *SR390 PLC status change log 20: minute and the second - - - Y R 0 *SR391 Real-time clock (RTC) year value: 00–99 (A.D.) - - - Y R 0 *SR392 Real-time clock (RTC) month value: 01–12 - - - Y R 1 *SR393 Real-time clock (RTC) day value: 1–31 - - - Y R 1 *SR394 Real-time clock (RTC) hour value: 00–23 - - - Y R 0 *SR395 Real-time clock (RTC) minute value: 00–59 - - - Y R 0 *SR396 Real-time clock (RTC) second value: 00–59 - - - Y R 0 *SR397 Real-time clock (RTC) week value: 1–7 - - - Y R 1 SR407 When the PLC runs, the value in SR407 increases by one every second.
SR407 counts from 0 to 32767, and then from -32768 to 0. 0 0 - N R/W 0 SR408 When the PLC runs, the value in SR408 increases by one every scan cycle. SR408 counts from 0 to 32767, and then from -32768 to 0. 0 0 - N R/W 0 SR411 The current scan time is stored in SR411 and SR412 (unit of measurement is 100 microseconds). Milliseconds are stored in SR411 (range is 0–65535). Microseconds are stored in SR412 (the range is 0–900). For example, if SR411=12 and SR412=300, then the current scan time is 12.3 milliseconds. 0 - - N R 0 SR412 0 - - N R 0 SR413 The maximum scan time is stored in SR413 and SR414 (unit of measurement is 100 microseconds). The value of the millisecond is stored in SR413.
0 - - N R 0 SR414 SR415 The minimum scan time is stored in SR415 and SR416 (unit of measurement is 100 microseconds). The value of the millisecond is stored in SR415. 0 - - N R 0 SR416 SR421 Duration of the timer interrupt I601 (unit: milliesecond). The default is 0, meaning the system uses the settings in HWCONFIG. 0 0 - N R/W 0 SR422 Duration of the timer interrupt I602 (unit: milliesecond). The default is 0, meaning the system uses the settings in HWCONFIG. 0 0 - N R/W 0 SR423 Duration of the timer interrupt I603 (unit: milliesecond). The default is 0, meaning the system uses the settings in HWCONFIG. 0 0 - N R/W 0 SR424 Duration of the timer interrupt I604 (unit: 0.1 milliesecond).
The default is 0, meaning the system uses the settings in HWCONFIG. 0 0 - N R/W 0 SR440 MAC address (Example: 12:34:56:78:9A:BC => SR440=16#1234, SR441=16#5678, SR442=16#9ABC) - - - Y R - SR441 - - - Y R - SR442 - - - Y R - SR443 PLC series - - - Y R - SR444 - - - Y R -