Siemens SINUMERIK 840Di Manual page 63

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SINUMERIK 840Di Manual (HBI) – 06.03 Edition

2.4 MCI board extension slot variation (SW 11.00 and higher)

With switch S1 you can select the type of handwheel that is to be operated on

– Differential handwheels:

Switch S1 closed (as-delivered state)

– TTL handwheel:

Switch S1 open.

Differential or TTL handwheels can only be operated alternately.

Switch position open

Fig. 2-10 Switch S1 switch position open (TTL handwheels)

You select between differential and TTL handwheels on the module using

switch S1 before installing the module.

2 Hardware Descriptions