Siemens SINUMERIK 840Di sl Commissioning Manual page 57

Order Number
Description
MCI board extension slot variation (option)
CAUTION
The plugging-in or disconnection of the cable distributor to or from the interface X121 of the
module, many be done only in the de-energized state.
Before you plug in or remove the cable distributor, switch off the PCU (shut down Windows
XP correctly!). Otherwise, short circuits might occur on the module. This could destroy the
module.
With switch S1 you can select the type of handwheel that is to be operated on the module:
Switch S1
● Differential handwheels:
● TTL handwheels:
Differential or TTL handwheels can only be operated alternately.
Figure 2-7
Manual
Commissioning Manual, 05/2008, 6FC5397–4CP10–4BA0
Switch S1 closed (delivery state)
Switch S1 open
Switch S1 switch position open (TTL handwheels)
Hardware Descriptions
2.3 MCI board extension slot variation
Order number (MLFB)
6FC5 222-0AA00-0AA1
57