Siemens sinumerik 840D sl Function Manual page 553

Boundary conditions
3.1 I/O modules
I/O module connection
A description of how the I/O modules are connected appears in:
References:
/PHD/ SINUMERIK 840D NCU Configuration Manual, Terminal Block, NCU Terminal Block
section (6FC5 211-0AA00-0AA0)
/PHD/ SINUMERIK 840D NCU Configuration Manual, DMP Compact Module, 1E NC Analog
section (6FC5 211-0AA10-0AA0)
3.1.2 I/O modules (840Di)
On the SINUMERIK 840Di, the analog I/O module is connected via PROFIBUS-DP.
Figure 3-2
Suitable I/O modules
As the A/D conversion time directly affects the deadtime of the clearance control servo loop,
only one I/O module may be used with low conversion time.
A SIMATIC S7 module suitable for clearance control is:
• Analog I/O module 2 AI, U, high-speed for ET 200S
I/O module connection
A description of how the I/O modules are connected appears in:
References:
/HBi/ SINUMERIK 840Di Manual, PROFIBIUS-DP Communication, SIMATIC S7 I/O units
section
48
Clearance sensor connection via analog S7 I/O module
Conversion time per channel (max. 2): 100 μs
Cycle time for both channels: 1 ms
Order number (MLFB): 6ES7 134-4FB50-0AB0
Special functions: Clearance Control (TE1)
Function Manual, 11/2006, 6FC5397-2BP10-2BA0