Method for performing a function test of a position measuring system and position measuring system for executing the method

A position measuring system comprising:

• a position detection unit;
• a processing unit that is in communication with said position detection unit, said processing unit generates a position value and a control value in the course of scanning a scale, wherein said control value has a definite mathematical interrelationship with respect to said position value;
• a memory unit for storing a correction value, which is entered in the form of a parameter into said mathematical interrelationship between said position value and said control value;
• and
• an evaluation unit connected downstream of said position measuring system for checking said mathematical interrelationship between said position value and said control value;
• wherein said correction value is stored in said memory unit under a first memory address and a second memory address so that, for forming a definite mathematical interrelationship between said control value and said position value, said position measuring system accesses said correction value at said first memory address and, in the course of checking for the presence of said mathematical interrelationship between said control value and said position value, said evaluation unit accesses said correction value at said second memory address.