Input Channel Alignment

At a Glance

The alignment procedure for an input allows an offset value to be added to the value measured by this input in order to compensate for a sensor shift (for example, adjusting the current value to 0°C of a Pt100 probe plunged into a bucket of ice for adjustment purposes).

Procedure

The following table describes the procedure used to align an input channel:

Step	Action for one channel
1	Access the Debug screen.
2	Select the channel to align in the Parameters in progress area and double-click on the corresponding box in the Alignment column.
3	Click on the check box in the Target value field in the Adjust channel dialog box, and enter the new alignment value.
4	Confirm this new alignment value by clicking the Validate button. Result: the new offset value is applied and appears in the Alignment column.
5	Close the Channel Adjust dialog box.

Notes

NOTE: When the offset alignment is modified by program using the WRITE_PARAM instruction, its value must fall between +1500 and -1500.

NOTE: The calculated offset value only acknowledges "keyboard" user commands. Simultaneous execution of the program (RUN) also adjusting the alignment will make the offset erroneous.