Modification of the Fallback Mode for Analog Outputs

At a Glance

This parameter sets the fallback mode which outputs take on when the PLC switches to STOP or if there is a communication fault.

The possible modes are as follows:

Fallback: outputs are set to a value that can be set between -10000 and 10000 (0 by default),
Maintain: the outputs remain in the state in which they were before the change to STOP.

WARNING

UNEXPECTED APPLICATION BEHAVIOR

Ensure that the extension module is connected to the base module via the connection cable, else the extension module outputs would not switch to fallback mode.

Failure to follow these instructions can result in death, serious injury, or equipment damage.

Procedure

The following table shows the procedure for defining the fallback mode assigned to the outputs of the analog modules.

Step	Action
1	Access the configuration screen of the required module.
2	Check the box in the cell of the Fallback mode column of the channel to configure.
3	Enter, in the cell corresponding to the Fallback value column, the required value. Result: the selected fallback mode will therefore be assigned to the selected channel.
4	For a Maintain, uncheck the box in the cell of the Fallback mode column of the channel to configure. Result: the value maintain will be assigned to the selected channel.
5	Validate the modification by clicking Edit → Confirm.