Functions Of The Machine Control Panel - Siemens SINUMERIK 840Di sl Commissioning Manual

PROFIBUS DP Communication
8.6 DP slave MCP 310
8.6.3

Functions of the machine control panel

The machine control panel offers the following functions:
● Standard
● Handwheel
● Additional I/Os
Standard
The function: "Standard" transfers the I/O data to the function and user-specific keys and
outputs:
● Input data: 8 bytes
● Output data: 8 bytes
Handwheel
The function: "Handwheel" transfers the absolute values of the two to the handwheels that
can be connected to the machine control panel:
● Input data: 2 x 2 bytes
For each handwheel the current handwheel value is transferred as a 16-bit absolute value
relative to the starting value. The starting value for the sensor counter in the handwheel is 0.
The absolute values are transferred to the Big Endian Format.
The data for both handwheels is always transferred. The absolute value for a handwheel that
is not connected is always 0.
NOTICE
If the "Handwheel" function is used, the MCP must be connected to the PROFIBUS
interface X101 of the MCI board. The handwheel is evaluated by the NC and the NC only
has direct access to this PROFIBUS interface.
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Commissioning Manual, 05/2008, 6FC5397–4CP10–4BA0
Manual