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# Clock7d2Ch
## `Clock7d2Ch` (FB)
FUNCTION\_BLOCK Clock7d2Ch
### Short description
> Time switch with 7 weekdays, two on / off switching times each, and a binary overall output.\
> The operating mode (on period or off period) can be defined for each weekday.\
> Typical application: defining the night / day operation of a zone temperature control system
### Representation
### Interfaces
#### Inputs
| Name | Data type | Value range | Initial value | Function |
| ----- | --------- | ----------- | ------------- | ------------ |
| *xEn* | BOOL | | | Enable input |
#### Outputs
| Name | Data type | Value range | Initial value | Function |
| ------------------ | --------- | ----------- | ------------- | ----------------------------------- |
| *xActive* | BOOL | | | Display of active switching periods |
| *todActivatedFrom* | TOD | | | On time 1 of the current weekday |
| *todActivatedTo* | TOD | | | Off time 2 of the current weekday |
#### Setpoints / Parameters
| Name | Data type | Value range | Initial value | Function |
| --------------- | --------- | ----------- | ------------- | ------------------------------------ |
| **todMonFrom1** | TOD | | TOD#07:00 | On time 1 - Monday |
| **todMonTo1** | TOD | | TOD#12:00 | Off time 1 - Monday |
| **todMonFrom2** | TOD | | TOD#12:00 | On time 2 - Monday |
| **todMonTo2** | TOD | | TOD#18:00 | Off time 2 - Monday |
| **xMonMode** | BOOL | | TRUE | Mode - switching periods - Monday |
| **todTueFrom1** | TOD | | TOD#07:00 | On time 1 - Tuesday |
| **todTueTo1** | TOD | | TOD#12:00 | Off time 1 - Tuesday |
| **todTueFrom2** | TOD | | TOD#12:00 | On time 2 - Tuesday |
| **todTueTo2** | TOD | | TOD#18:00 | Off time 2 - Tuesday |
| **xTueMode** | BOOL | | TRUE | Mode - switching periods - Tuesday |
| **todWedFrom1** | TOD | | TOD#07:00 | On time 1 - Wednesday |
| **todWedTo1** | TOD | | TOD#12:00 | Off time 1 - Wednesday |
| **todWedFrom2** | TOD | | TOD#12:00 | On time 2 - Wednesday |
| **todWedTo2** | TOD | | TOD#18:00 | Off time 2 - Wednesday |
| **xWedMode** | BOOL | | TRUE | Mode - switching periods - Wednesday |
| **todThuFrom1** | TOD | | TOD#07:00 | On time 1 - Thursday |
| **todThuTo1** | TOD | | TOD#12:00 | Off time 1 - Thursday |
| **todThuFrom2** | TOD | | TOD#12:00 | On time 2 - Thursday |
| **todThuTo2** | TOD | | TOD#18:00 | Off time 2 - Thursday |
| **xThuMode** | BOOL | | TRUE | Mode - switching periods - Thursday |
| **todFriFrom1** | TOD | | TOD#07:00 | On time 1 - Friday |
| **todFriTo1** | TOD | | TOD#12:00 | Off time 1 - Friday |
| **todFriFrom2** | TOD | | TOD#12:00 | On time 2 - Friday |
| **todFriTo2** | TOD | | TOD#18:00 | Off time 2 - Friday |
| **xFriMode** | BOOL | | TRUE | Mode - switching periods - Friday |
| **todSatFrom1** | TOD | | TOD#07:00 | On time 1 - Saturday |
| **todSatTo1** | TOD | | TOD#12:00 | Off time 1 - Saturday |
| **todSatFrom2** | TOD | | TOD#12:00 | On time 2 - Saturday |
| **todSatTo2** | TOD | | TOD#18:00 | Off time 2 - Saturday |
| **xSatMode** | BOOL | | TRUE | Mode - switching periods - Saturday |
| **todSunFrom1** | TOD | | TOD#07:00 | On time 1 - Sunday |
| **todSunTo1** | TOD | | TOD#12:00 | Off time 1 - Sunday |
| **todSunFrom2** | TOD | | TOD#12:00 | On time 2 - Sunday |
| **todSunTo2** | TOD | | TOD#18:00 | Off time 2 - Sunday |
| **xSunMode** | BOOL | | TRUE | Mode - switching periods - Sunday |
| **sNotice** | STRING | | ‘Notice’ | Designation - time switch |
### Functional description
#### General
#### Weekdays 1 - 7 (Monday … Sunday, XXX = Mon, Tue, Wed, Thu, Fri, Sat, Sun)
Two separate switching periods are assigned to each of the seven weekdays (switching period 1, switching period 2).
Each switching period 1 is defined by adjustable data (on time 1 **todXXXTimeFrom1** and off time 1 **todXXXTimeTo1**).\
Each switching period 2 is defined by adjustable data (on time 2 **todXXXTimeFrom2** and off time 2 **todXXXTimeTo2**).\
Additionally, an operating mode (**xXXXMode**) can be defined per weekday.
If off time 1 is before on time 1, then for the check, off time 1 is set to the value of on time 1.\
If on time 2 is before off time 1, then for the check, on time 2 is set to the value of off time 1.\
If off time 2 is before on time 2, then for the check, off time 2 is set to the value of on time 2.
A switching period is active if the current time on weekday XXX is within the switching periods of weekday XXX (**xXXXMode** = TRUE).\
A switching period is active if the current time on weekday XXX is outside the switching periods of weekday XXX (**xXXXMode** = FALSE).
> **Special case 1: on time 1 = on time 2 = off time 1 = off time 2 = TOD#00:00**
>
> If the on period is active (**xXXXMode** = TRUE), the switching period is not active all day.\
> If the off period is active (**xXXXMode** = FALSE), the switching period is active all day.
>
> **Special case 2: on time 1 = on time 2 = off time 1 = off time 2 = TOD#23:59**
>
> If the on period is active (**xXXXMode** = TRUE), the switching period is active all day.\
> If the off period is active (**xXXXMode** = FALSE), the switching period is not active all day.
>
> **Prerequisite for the use of the function block Clock7d2Ch**
>
> For correct operation, the use of the TimeRead2 function block is required.
#### On periods
#### Off periods
\
Enable input *xEn*
| *xEn* | *xActive* | *todActivatedFrom* | *todActivatedTo* | Note |
| ----- | ------------------------------------------------------ | ---------------------------------------------------- | ----------------------------------------------------- | -------------- |
| FALSE | FALSE | unchanged | unchanged | FB deactivated |
| TRUE | State depending on weekday, time and switching periods | On time of switching period 1 of the current weekday | Off time of switching period 2 of the current weekday | FB activated |
#### Display output *xActive*
The display output *xActive* takes the state TRUE if, when the enable input is active (*xEn* = TRUE) the time on weekday XXX lies within switching period 1 or switching period 2 of weekday XXX (**xXXXMode** = TRUE, on period).\
The display output *xActive* takes the state TRUE if, when the enable input is active (*xEn* = TRUE) the time on weekday XXX lies outside switching period 1 or switching period 2 of weekday XXX (**xXXXMode** = FALSE, off period).\
In all other cases, the display output *xActive* takes the state FALSE.
| *xEn* | *xActive* | Switching periods XXX | **xXXXMode** - XXX | Note |
| ----- | --------- | --------------------- | ------------------ | ---------------------- |
| FALSE | FALSE | X | X | FB deactivated |
| TRUE | FALSE | FALSE | TRUE | On periods not active |
| TRUE | TRUE | TRUE | TRUE | On periods active |
| TRUE | TRUE | FALSE | FALSE | Off periods not active |
| TRUE | FALSE | TRUE | FALSE | Off periods active |
#### On time of the switching periods of the current weekday *todActivatedFrom*
This output permanently shows the on time of switching period 1 of the current weekday if the enable input (*xEn* = TRUE) is active.\
In all other situations it is not changed. In special cases 1 and 2, the value TOD#00:00 is always displayed.
#### Off time of the switching periods of the current weekday *todActivatedTo*
This output permanently shows the off time of switching period 2 of the current weekday if the enable input (*xEn* = TRUE) is active.\
In all other situations it is not changed. In special case 1, the value TOD#00:00 is always displayed, and in special case 2, the value TOD#23:59 is always displayed.
### Visualization
#### Representation
#### Interfaces visualization element
| Name | Data type | Type | Initial value | Function |
| ------------------ | ---------- | ------------ | ------------- | --------------------------------------------- |
| **FB\_Clock7d2Ch** | Clock7d2Ch | VAR\_IN\_OUT | | Enter FB Clock7d2Ch here, e.g. PRG.Clock7d2Ch |
\
Note: VAR\_IN\_OUT interfaces must be assigned; VAR\_INPUT is optional.
### CODESYS
InOut:
| Scope | Name | Type | Initial |
| ----------- | ------------------ | -------- | ------------------ |
| Input | `xEn` | `BOOL` | |
| Input Const | `todMonFrom1` | `TOD` | TIME\_OF\_DAY#7:0 |
| Input Const | `todMonTo1` | `TOD` | TIME\_OF\_DAY#12:0 |
| Input Const | `todMonFrom2` | `TOD` | TIME\_OF\_DAY#12:0 |
| Input Const | `todMonTo2` | `TOD` | TIME\_OF\_DAY#18:0 |
| Input Const | `xMonMode` | `BOOL` | TRUE |
| Input Const | `todTueFrom1` | `TOD` | TIME\_OF\_DAY#7:0 |
| Input Const | `todTueTo1` | `TOD` | TIME\_OF\_DAY#12:0 |
| Input Const | `todTueFrom2` | `TOD` | TIME\_OF\_DAY#12:0 |
| Input Const | `todTueTo2` | `TOD` | TIME\_OF\_DAY#18:0 |
| Input Const | `xTueMode` | `BOOL` | TRUE |
| Input Const | `todWedFrom1` | `TOD` | TIME\_OF\_DAY#7:0 |
| Input Const | `todWedTo1` | `TOD` | TIME\_OF\_DAY#12:0 |
| Input Const | `todWedFrom2` | `TOD` | TIME\_OF\_DAY#12:0 |
| Input Const | `todWedTo2` | `TOD` | TIME\_OF\_DAY#18:0 |
| Input Const | `xWedMode` | `BOOL` | TRUE |
| Input Const | `todThuFrom1` | `TOD` | TIME\_OF\_DAY#7:0 |
| Input Const | `todThuTo1` | `TOD` | TIME\_OF\_DAY#12:0 |
| Input Const | `todThuFrom2` | `TOD` | TIME\_OF\_DAY#12:0 |
| Input Const | `todThuTo2` | `TOD` | TIME\_OF\_DAY#18:0 |
| Input Const | `xThuMode` | `BOOL` | TRUE |
| Input Const | `todFriFrom1` | `TOD` | TIME\_OF\_DAY#7:0 |
| Input Const | `todFriTo1` | `TOD` | TIME\_OF\_DAY#12:0 |
| Input Const | `todFriFrom2` | `TOD` | TIME\_OF\_DAY#12:0 |
| Input Const | `todFriTo2` | `TOD` | TIME\_OF\_DAY#18:0 |
| Input Const | `xFriMode` | `BOOL` | TRUE |
| Input Const | `todSatFrom1` | `TOD` | TIME\_OF\_DAY#7:0 |
| Input Const | `todSatTo1` | `TOD` | TIME\_OF\_DAY#12:0 |
| Input Const | `todSatFrom2` | `TOD` | TIME\_OF\_DAY#12:0 |
| Input Const | `todSatTo2` | `TOD` | TIME\_OF\_DAY#18:0 |
| Input Const | `xSatMode` | `BOOL` | TRUE |
| Input Const | `todSunFrom1` | `TOD` | TIME\_OF\_DAY#7:0 |
| Input Const | `todSunTo1` | `TOD` | TIME\_OF\_DAY#12:0 |
| Input Const | `todSunFrom2` | `TOD` | TIME\_OF\_DAY#12:0 |
| Input Const | `todSunTo2` | `TOD` | TIME\_OF\_DAY#18:0 |
| Input Const | `xSunMode` | `BOOL` | TRUE |
| Input Const | `sNotice` | `STRING` | ‘Notice’ |
| Output | `xActive` | `BOOL` | |
| Output | `todActivatedFrom` | `TOD` | |
| Output | `todActivatedTo` | `TOD` | |
---
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