SUB
---


.. figure:: ../media/image982.png
   :figwidth: 4.83333in
   :align: center 

**Purpose**

To subtract the values from one or more signals from each other.

**Procedure** 

The output value is equal to the sum of all the signals of the upper channel minus the sum of all the signals of the lower channel.

**Parameters** 

None.

**Remarks** 

In case of empty input channels (no signal lines connected) a value of zero is assumed.

**Examples** 

.. figure:: ../media/image983.png
   :figwidth: 3.875in
   :align: center 

.. include:: substitutions_control.rst