Description of Functions
9-52
FM 353 Stepper Drive Positioning Module
6ES7 353-1AH01-8BG0
9.3.10
Measured values
Prerequisites
The following prerequisites must be fulfilled to execute the “Measuring” function:
1. Connect a bounce-free switching-signal encoder (sensing probe) to a digital
output of the FM 353.
2. Parameterize “Measurement” for this input in MD34.
Activating the measuring function
The “Individual settings” function (AW-DB, DBB34 and 35) can be used to activate
a “length measurement“ or “in
−
process measuring”.
Because both functions use the same digital input of the FM 353, only one function
can be performed at a time. If both functions are activated at the same time, both
functions are deactivated, and an error message is output.
Function description
Measurement functions can be executed in all modes. An executed measurement
is signaled by the checkback signal “ME” and optionally also by a process inter-
rupt.
Inprocess measurement
The present actual position is captured at each rising edge of the touch probe. At
the same time, the axis movement is interrupted (servo-controlled braking).
S1
Inprocess measurement On
Measurement input
Process interrupt
S1
−
execution of measurement
Measurement taking place
Summary of Contents for SIMATIC FM 353
Page 22: ...Product Overview 1 12 FM 353 Stepper Drive Positioning Module 6ES7 353 1AH01 8BG0 ...
Page 32: ...Installing and Removing 3 6 FM 353 Stepper Drive Positioning Module 6ES7 353 1AH01 8BG0 ...
Page 282: ...Description of Functions 9 82 FM 353 Stepper Drive Positioning Module 6ES7 353 1AH01 8BG0 ...
Page 354: ...User Data Block AW DB B 16 FM 353 Stepper Drive Positioning Module 6ES7 353 1AH01 8BG0 ...