Siemens SIMODRIVE POSMO A User Manual

5
5.5 SIMODRIVE POSMO A functions
5-166
 Siemens AG 2013 All Rights Reserved
SIMODRIVE POSMO A User Manual (POS1) – 08/2013 Edition
5.5.2 Flying measurement/actual value setting (from SW 1.4)
Note
For the ”flying measurement/actual value setting” function, digital input
1 is updated in a 125 μs grid.
While the motor is braking, a 0/1 edge is ineffective and the ”flying
measurement/actual value setting” function is not executed.
The positioning motor can be used for test purposes using the ”flying
measurement” function.
v
t
1
0
Block 18
Block 19
 Brakes along the braking ramp
 Block change with delete distance to go
 The position value is written into P62 (measuring position)
 Continue the program
t
Input signal
”Flying
measurement/actual
value setting”
What happens for a 0/1 signal edge?
 Traverses as programmed in the block
 The measured value in P62 (measuring position) is
not updated
No input signal detected?
Fig. 5-9 Example: Flying measurement
What should be done?
The following has to be done in order to use the ”flying measurement”
function?
1. Connect the signal transmitter to digital input 1 (X5 terminal I/Q1)
––> the signal transmitter must be high active
––> refer to Chapter 2.3 and 2.4
2. Assign digital input 1 to the ”flying measurement/actual value set-
ting” function
––> in the SimoCom A under the tab ”Par” and entry ”Digital inputs/
outputs”
––> by setting SIMATIC S7 P31 to 27
3. Program the traversing block, activating the ”flying measurement”
function
––> set PSW.11 to ”1”
4. Read the measured value after a 0/1 signal edge has been detected
––> P62 (measuring position) = measured position value
Flying
measurement
(from SW 1.4)
5 Description of the Functions
02.9908.02

Siemens SIMODRIVE POSMO A Specifications

General

Brand	Siemens
Model	SIMODRIVE POSMO A
Category	Engine
Language	English