> For the complete documentation index, see [llms.txt](https://support.powerio.com/hub/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.powerio.com/hub/codesys-hvac/en/hvac-library/functionblocks/clock/clockslave32.md).
# ClockSlave32
## `ClockSlave32` (FB)
FUNCTION\_BLOCK ClockSlave32 EXTENDS Uhr\_Base IMPLEMENTS IUhr
### Short description
> Slave function block for a clock system with 32 weekly clocks, 30 holidays, 10 vacation periods, and 5 special switching times.
### Representation
### Functional description
#### General
This function block serves as a slave function block for a clock system with 32 weekly clocks, 30 holidays, 10 vacation periods, and 5 special switching times.\
It allows the individual activation / deactivation of the 32 weekly clock channels, the holiday channel, the vacation channel, and the special switching times channel (FALSE = deactivation, TRUE = activation).\
The connection between the master function block and the slave function blocks is established via the output *itfToClockSlave32* or the inputs *itfFromClockMaster32* is established.\
The inputs *sTitle* or *sLine1* allow the designation of the title or line 1 in the visualization.
#### State of the slave channel *xActive*
The output *xActive* (FALSE = not active, TRUE = active) is determined by the current states of the **assigned** weekly clock channels (**xClockCH\_01** to **xClockCH\_32** = TRUE) of the **assigned** holiday channel (**xPublicHoliday** = TRUE), the **assigned** vacation channel (**xHoliday** = TRUE) or the **assigned** special switching times channel (**xSwitchTimeS** = TRUE) as follows (Note: channels that are not assigned automatically assume the state FALSE):
| Weekly clock channels | Holiday channel | Vacation channel | Special switching times channel | Central activation (Master) | Central deactivation (Master) | *xActive* | Notes |
| --------------------- | --------------- | ---------------- | ------------------------------- | --------------------------- | ----------------------------- | --------- | -------------------------------------- |
| FALSE | FALSE | FALSE | FALSE | FALSE | FALSE | FALSE | Normal operation - Off |
| TRUE | FALSE | FALSE | FALSE | FALSE | FALSE | TRUE | Normal operation - On |
| X | TRUE | FALSE | FALSE | FALSE | FALSE | FALSE | Holiday operation - On |
| X | FALSE | TRUE | FALSE | FALSE | FALSE | FALSE | Vacation operation - On |
| X | X | X | TRUE | FALSE | FALSE | TRUE | Special switching times operation - On |
| X | X | X | X | TRUE | FALSE | TRUE | Central activation ( Master ) |
| X | X | X | X | X | TRUE | FALSE | Central deactivation ( Master ) |
Legend: X = any
#### Central cancellation of all assignments **xResetAssignment**
This setpoint / parameter is used to centrally cancel all assignments made in the slave function block.
### Visualization
#### Representation
#### Interfaces visualization element
| Name | Data type | Type | Initial value | Function |
| --------------------- | ------------- | ------------ | ------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **FB\_ClockSlave32** | ClockSlave32 | VAR\_IN\_OUT | | Enter FB ClockSlave32 here, e.g. PRG.ClockSlave32 |
| **FB\_ClockMaster32** | ClockMaster32 | VAR\_IN\_OUT | | Enter the corresponding(!) FB ClockMaster32 here, e.g. PRG.ClockMaster32 |
| **BMS\_Active** | BOOL | VAR\_INPUT | | BMS (Building Management System) GLT (building management technology). If BMS\_Active = TRUE, input / editing of the clocks is disabled, since they can then only be set via the BMS. Time values can then only be viewed. |
\
Note: VAR\_IN\_OUT interfaces must be assigned; VAR\_INPUT is optional.
### CODESYS
InOut:
| Scope | Name | Type | Initial | Inherited from |
| ----------- | ---------------------- | -------------- | ------- | -------------- |
| Input | `itfFromClockMaster32` | `IUhrProtocol` | | Clock\_Base |
| Input | `sTitle` | `STRING` | | |
| Input | `sLine1` | `STRING` | | |
| Input | `sLine2` | `STRING` | | |
| Input Const | `ClockSlvPara` | stSlvClockData | | |
| Input Const | `xSwitchTimeS` | `BOOL` | | |
| Input Const | `xPublicHoliday` | `BOOL` | | |
| Input Const | `xHoliday` | `BOOL` | | |
| Input Const | `xClockCH_32` | `BOOL` | | |
| Input Const | `xClockCH_31` | `BOOL` | | |
| Input Const | `xClockCH_30` | `BOOL` | | |
| Input Const | `xClockCH_29` | `BOOL` | | |
| Input Const | `xClockCH_28` | `BOOL` | | |
| Input Const | `xClockCH_27` | `BOOL` | | |
| Input Const | `xClockCH_26` | `BOOL` | | |
| Input Const | `xClockCH_25` | `BOOL` | | |
| Input Const | `xClockCH_24` | `BOOL` | | |
| Input Const | `xClockCH_23` | `BOOL` | | |
| Input Const | `xClockCH_22` | `BOOL` | | |
| Input Const | `xClockCH_21` | `BOOL` | | |
| Input Const | `xClockCH_20` | `BOOL` | | |
| Input Const | `xClockCH_19` | `BOOL` | | |
| Input Const | `xClockCH_18` | `BOOL` | | |
| Input Const | `xClockCH_17` | `BOOL` | | |
| Input Const | `xClockCH_16` | `BOOL` | | |
| Input Const | `xClockCH_15` | `BOOL` | | |
| Input Const | `xClockCH_14` | `BOOL` | | |
| Input Const | `xClockCH_13` | `BOOL` | | |
| Input Const | `xClockCH_12` | `BOOL` | | |
| Input Const | `xClockCH_11` | `BOOL` | | |
| Input Const | `xClockCH_10` | `BOOL` | | |
| Input Const | `xClockCH_09` | `BOOL` | | |
| Input Const | `xClockCH_08` | `BOOL` | | |
| Input Const | `xClockCH_07` | `BOOL` | | |
| Input Const | `xClockCH_06` | `BOOL` | | |
| Input Const | `xClockCH_05` | `BOOL` | | |
| Input Const | `xClockCH_04` | `BOOL` | | |
| Input Const | `xClockCH_03` | `BOOL` | | |
| Input Const | `xClockCH_02` | `BOOL` | | |
| Input Const | `xClockCH_01` | `BOOL` | | |
| Input Const | `xResetAssignment` | `BOOL` | FALSE | |
| Output | `xClockActive` | `BOOL` | | |
| Output | `todTodayTON` | `TOD` | | |
| Output | `todTodayTOF` | `TOD` | | |
---
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