Siemens SINAMICS S110 - Page 575

Communication
9.2 Communication according to PROFIdrive
Function Manual
Function Manual, 01/2011, 6SL3097-4AB10-0BP3
573
MTn_ZS_F and MTn_ZS_S
Display of the measuring time determined
The measuring time is specified as a 16-bit value with a resolution of 0.25 μs.
Features of the central probe
● The time stamps from probes in more than one drive can be transferred simultaneously in
a single telegram.
● The time in the controller and drive unit is synchronized via CU_STW1 and the
CU_ZSW1.
Note: The controller must support time synchronization!
● A higher-level controller can then use the time stamp to determine the actual position
value of more than one drive.
● The system outputs a message if the measuring time determination function in the probe
is already in use (see also p0488, p0489, and p0580).
Example: central probe
Assumptions for the example:
● Determination of the time stamp MT1_ZS_S by evaluating the rising edge of probe 1
● Determination of the time stamp MT2_ZS_S and MT2_ZS_F by evaluating the rising and
falling edge of probe 2
● Probe 1 on DI/DO 9 of the Control Unit (p0680[0] = 1)
● Probe 2 on DI/DO 10 of the Control Unit (p0680[1] = 2)
● Manufacturer-specific telegram p0922 = 391 is set.
9DOXHDYDLODEOH
07B=6B6
9DOXHDYDLODEOH
07B67:
07B=6B6
07B67:
3UREH
3UREH
07B=6B)
9DOXHDYDLODEOH
07B67:















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Figure 9-14 Sequence chart for central probe example