Siemens SIMODRIVE POSMO A User Manual page 172

08.02 02.99
Example Flying actual value setting followed by absolute positioning (from
SW 1.4)
The following example shows how the actual value can be set flying
when approaching a BERO/cam and then an absolute or relative posi-
tioning operation can be started.
However, for safety reasons, positioning should be interrupted if neither
BERO nor cam were detected within a specified maximum distance.
In this case, the first program block selected is – e.g. block No. 9.
1. Connect the signal transmitter to digital input 1 (X5 terminal I/Q1)
2. Assign digital input 1 to the "flying measurement/actual value setting"
3. Program the traversing block (e.g. Block No. 9) as follows
If a relative positioning to the new reference point is then to be carried–
out in block No. 10, then the block change enable condition in block
No. 9 must be programmed for "continue flying". The block is now
changed with delete distance to go.
The traversing block to find the signals has now been programmed
If the signal is detected within the maximum distance via the digital in-
put, then the actual position is set to the required actual value and the
drive goes into the state "reference point set" (ZSW1.11 = 1).
If the subsequent traversing blocks are configured as absolute blocks,
these are only executed if the "flying actual value setting" was success-
ful in traversing block number 9.
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SIMODRIVE POSMO A User Manual (POS1) – 08/2013 Edition
––> the signal transmitter must be high active
––> refer to Chapter 2.3 and 2.4
function
––> in the SimoCom A under the tab "Par" and entry "Digital inputs/
outputs"
––> by setting SIMATIC S7 P31 to 27
––> in SimoCom A under the "Par" tab and entry
"Traversing blocks"
––> select the "relative" position (PSW.0 = 1)
––> select the "flying" block change enable
(via SIMATIC S7 P0080:9 bit 5 = 1)
––> enter the target position (max. distance to the cam)
The sign of the distance specifies whether the signal is in the
positive or negative traversing direction with respect to the
current actual value.
––> in the selection box PSW, select "flying actual value setting:
active" (PSW.10 = 1)
––> enter the required actual value in the signaling position.
5 Description of the Functions
5.5 SIMODRIVE POSMO A functions
5
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