Chapter 6 Applied Instructions • Disabled daylight saving time function (refer to example 1 below) When the operand S is 0, the function of daylight saving time is disabled. When S is set to disable the daylight saving time, the values in S 1 – S 5 are irrelevant and the operand D shows the daylight saving time state as OFF. • Enabled daylight saving time function (refer to example 2 and 3) When the value in S is 1 or 3, daylight saving time function is enabled: S 1 and S 2 : setting for the month to start daylight saving time; S 3 and S 4 : setting for the month to end daylight saving time; S 5 : settings for the change due to daylight saving time; unit:
minute; the operand D shows the daylight saving time state. When the function of daylight saving time is enabled and the system runs for the first time during the start time ( S 1 , S 2 ), the system time adds the value set in S 5 once. When the function of daylight saving time is disabled and the system runs for the first time during the end time ( S 1 , S 2 ), the system time subtracts the value set in S 5 once. Modes for daylight saving 6_ Mode 1 (S=1): enabled by month and date (refer to example 2) Note 1: If this function is enabled, the value in D is ON. Note 2: If the date is set incorrectly, the daylight saving function cannot be enabled.
The SM0 is ON, and the error code in SR0 is 16#200B. For example if a non-existed date is set, such as April 31, or the 6-495 Enabled 1, 3 Enabled daylight saving time function Read 2 Read the daylight saving time setting Mode S Function Code Rules Mode 1 1 By month and date Mode 2 3 By month and week Operand Description S1 The month to start daylight saving time Range: 1-12 S2 The date to start daylight saving time Range: 1-31 S3 The month to end daylight saving time Range: 1-12 S4 The date to end daylight saving time Range: 1-31 S5 Time that changed due to daylight saving time; unit: minute Range: 1-1439 (within 1 day)