Siemens SINUMERIK 840D sl Function Manual page 623

SIMODRIVE 611 universal drives support the measurement functionality of distributed
probes by storing the actual encoder value in the hardware concurrent to the measurement
signal edge. The more accurate measurement method for a distributed probe is preferred for
PROFIBUS-DP drives.
SIMODRIVE 611 digital drives continue to be operated with a centralized probe at connector
X121 on the SINUMERIK 840D/840Di.
References:
/BHA/ User Manual, Absolute Value Sensor with PROFIBUS-DP
/FBU/ Function Manual of SIMODRIVE 611 universal
Extended Functions
Function Manual, 03/2009, 6FC5397-1BP10-4BA0
Measurement (M5)
Hardware requirements
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