Tab: I/O Mapping

Object: KNX

The I/O channels are generated for each communication object:

Table 2. General I/Os

Signal	Description
Program LED Status	This input is set by the ETS program. The signal can be used to identify a special controller when several controllers are used (for example, by switching a LED). The status is also set when the Program Button is set to `TRUE`. Then the device is in programming mode. As soon as ETS5 has successfully set the physical address, this input switches to `FALSE`.
Program Button	The Program Button is needed for assigning the physical address from ETS5. If the output is set to `TRUE`, then the device is in programming mode and then ETS5 can assign the address specified there to the device.

Signal

Description

Program LED Status

This input is set by the ETS program. The signal can be used to identify a special controller when several controllers are used (for example, by switching a LED).

The status is also set when the Program Button is set to TRUE. Then the device is in programming mode. As soon as ETS5 has successfully set the physical address, this input switches to FALSE.

Program Button

The Program Button is needed for assigning the physical address from ETS5. If the output is set to TRUE, then the device is in programming mode and then ETS5 can assign the address specified there to the device.

Table 3. I/O channels of the communication object

Signal	Description
Status byte	Status byte as defined in the KNX stack This allows you to determine in the application whether or not data has been received. The status can be reset by means of the `ResetStatusFlags` method.
Trigger/Disable Cyclic, send on change Trigger Output	. Depending on the configuration in the ETS program, this output has the following function: If at least one of the send on difference, send on change, or Cyclic sending options is selected, then the output is defined as deactivation. If it is set to TRUE, then cyclic sending or send on change is stopped. If none of the send on difference, send on change, or Cyclic sending options is selected, then sending is triggered by a rising edge.
Value	Value for the input or outputs – depending on the corresponding communication object

Signal

Description

Status byte

Status byte as defined in the KNX stack

This allows you to determine in the application whether or not data has been received. The status can be reset by means of the ResetStatusFlags method.

Trigger/Disable Cyclic, send on change

Trigger Output

. Depending on the configuration in the ETS program, this output has the following function:

If at least one of the send on difference, send on change, or Cyclic sending options is selected, then the output is defined as deactivation. If it is set to TRUE, then cyclic sending or send on change is stopped.
If none of the send on difference, send on change, or Cyclic sending options is selected, then sending is triggered by a rising edge.

Value

Value for the input or outputs – depending on the corresponding communication object

Tip

For general information , see: Tab: <device name> I/O Mapping