> 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-modbusio2-lib/funktionen/showdebugoutput.md).

# ShowDebugOutput

## `ShowDebugOutput` (FUN)

FUNCTION ShowDebugOutput : BOOL

InOut:

| Scope  | Name                                | Type        | Comment                                                                                  |
| ------ | ----------------------------------- | ----------- | ---------------------------------------------------------------------------------------- |
| Return | `ShowDebugOutput`                   | `BOOL`      |                                                                                          |
| Input  | `stDebugOutput`                     | DebugOutput |                                                                                          |
| Output | `eModuleTypeID`                     | ModuleType  | Displays the read module type                                                            |
| Output | `udiLastModbusWriteTransactionTime` | `UDINT`     | <p>Modbus request transaction time in milliseconds for<br>writing</p>                    |
| Output | `udiLastModbusReadTransactionTime`  | `UDINT`     | Modbus request transaction time in milliseconds for reading                              |
| Output | `uiConfiguredBusTimeoutInSeconds`   | `UINT`      | Displays the module's read bus timeout time                                              |
| Output | `udiLastReadRegister`               | `UDINT`     | Displays the last read Modbus register                                                   |
| Output | `udiLastWriteRegister`              | `UDINT`     | Displays the last written Modbus register                                                |
| Output | `uxiReadErrorCounter`               | `__UXINT`   | Number of error read commands                                                            |
| Output | `dtLastReadErrorTimestamp`          | `DT`        | <p>Displays the last timestamp of a faulty Modbus read<br>command</p>                    |
| Output | `uxiWriteErrorCounter`              | `__UXINT`   | Number of error write commands                                                           |
| Output | `dtLastWriteErrorTimestamp`         | `DT`        | <p>Displays the last timestamp of a faulty Modbus<br>write command</p>                   |
| Output | `uxiRetrysAfterError`               | `__UXINT`   | <p>Number of attempts to restore communication,<br>after a read/write error occurred</p> |
| Output | `tTimeUntilNextCommunicationRetry`  | `TIME`      | Time until the next attempt to restore communication                                     |


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