TOW (check week for real-time clock)
The TOW instruction turns on an output if the value of the real-time clock (RTC) is in the range of the Time of Week setting.
Operation details:
- If an RTC is not present, the output is always off.
- Configure the Time input parameters with valid ranges as specified in the TOWDATA Data Type. An invalid value faults the controller when TimeX. Enable is set to TRUE and an RTC is present and enabled.
Languages supported: Function block diagram, ladder diagram, structured text.
This instruction applies to the Micro810, L20E, L50E, and L70E controllers.
TOW
Parameter | Parameter Type | Data Type | Description |
|---|---|---|---|
EN | Input | BOOL | Instruction enable.
|
TimeA | Input | TOWDATA | Day Time Setting of Channel A. Use the TOWDATA Data Type to define TimeA. |
TimeB | Input | TOWDATA | Day Time Setting of Channel B. Use the TOWDATA Data Type to define TimeB. |
TimeC | Input | TOWDATA | Day Time Setting of Channel C. Use the TOWDATA Data Type to define TimeC. |
TimeD | Input | TOWDATA | Day Time Setting of Channel D. Use the TOWDATA Data Type to define TimeD. |
TOW | Output | BOOL | If TRUE, the value of the real-time clock is in the range of the Day Time setting of any one of four channels. |
TOWDATA Data Type
The following table describes the TOWDATA data type:
Parameter | Data Type | Description |
|---|---|---|
Enable | BOOL | TRUE: Enable; FALSE: Disable. |
DailyWeekly | BOOL | Type of Timer (0:daily timer; 1:weekly timer). |
DayOn | USINT | Day of Week On value (must be in set [0...6]). |
HourOn | USINT | Hour On value (must be in set [0...23]). |
MinOn | USINT | Minute On value (must be in set [0...59]). |
DayOff | USINT | Weekday Off value (must be in set [0...6]). |
HourOff | USINT | Hour Off value (must be in set [0...23]). |
MinOff | USINT | Minute Off value (must be in set [0...59]). |
TOW examples
TOW function block diagram example
TOW ladder diagram example
TOW structured text example
(* ST Equivalence: *) TESTOUTPUT := TOW(TIMEA, TIMEB, TIMEC, TIMED) ;
Results
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