Siemens SINUMERIK 840D sl Commissioning Manual page 216

Tips
13.1 Configuration of the properties of the network interface for PROFIBUS
Figure 13-2
5. Click on "Options" and then on the "Equidistance" tab (see figure below).
Figure 13-3
6. To enable reproducible access to peripherals (for hand wheel mode), the PROFIBUS DP
must have constant bus cycle time. The following entries are necessary under
Equidistance:
7. Click on "OK" three times.
216
Properties of the PROFIBUS interface
Equidistance
– Click on the "Activate equidistance bus cycle" field
– Enter the cycle, e.g., "2 ms" for the "Equidistance DP cycle" (for integrated
PROFIBUS) (see MD10050 Syscock_Cycle_Time).
– Click on the "Times Ti and To equal for all slaves" field
– The fields "Time Ti" and "Time To" must contain a value "< 2ms".
Commissioning Manual, 07/2007, 6FC5397-2AP10-3BA0
IBN CNC: NCK, PLC, drive