Siemens Simatic RTU303xC Series Operating Instructions Manual page 274

Program blocks
5.6 Blocks for time functions
Switching variants from the function parameters "Yearly", "Monthly" and "Pulse"
The options for activating the function parameters result in the following switching variants.
Four typical switching variants are explained below based on examples.
● Example 1
– Date/time ON: 2015-06-15 12:00:00
– Date/time OFF: 2017-08-31 12:00:00
– "Yearly" disabled
– "Monthly" disabled
– "Pulse" disabled
Since the options "Yearly" and "Monthly" are both disabled, the settings produce a single
time during which the output is set to 1 . The time begins on June 15 2015 and ends on
August 31 2017.
● Example 2
– Date/time ON: 2015-03-15 12:00:00
– Date/time OFF: 2018-08-31 12:00:00
– "Yearly" disabled
– "Monthly" disabled
– "Pulse" enabled
Since the options "Yearly" and "Monthly" are both disabled, the settings produce a single
pulse on March 15, 2015.
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Operating Instructions, 06/2019, C79000-G8976-C382-06
RTU303xC