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02.99
Reference
The reference point approach is executed via program. The axis tra-
approach to a
verses with direction reversal depending on the reference cam signal.
BERO proximity
switch with
direction reversal
Fig. 5-6
Prerequisites:
S
S
Program the following traversing program (example):
S
S
S
E Siemens AG 2013 All Rights Reserved
SIMODRIVE POSMO A User Manual (POS1) – 08/2013 Edition
Zero marks
Reference cam
signal
(e.g. from BERO)
Traversing
profile
Reference approach to the BERO with direction reversal
Connect the reference cam signal to terminal 1
(X5, I/Q1, refer to Chapter 2.3)
Define terminal 1 as input and directly transfer the input terminal
signal into the start byte
(e.g. start byte bit 7 ––> P31 = 25, refer to Chapter 5.5.10)
Program block
(e.g. block 13)
– SMStart bit 7 as start condition
– Program control word (PSW) = 224
(closed–loop speed controlled, with approximate positioning, with
negated start byte, skip if the start byte is not fulfilled)
– Speed e.g. 20 %
– Acceleration 100 %
Program block (e.g. block 14)
– SMStart bit 7 as start condition
– Program control word (PSW)
= 384
(01 1000 0000
dec
(closed–loop speed controlled without negated start byte)
– Speed e.g. –5 %
(= shutdown velocity with direction reversal)
– Acceleration 100 %
– Program end when the end of the block is reached
Start program
As soon as ZSW.14 = "0" (outside traversing block) is signaled, the
reference point can be set with STW.11 (start referencing/stop refer-
5 Description of the Functions
5.5 SIMODRIVE POSMO A functions
Reference mark
Ä Ä Ä Ä Ä
Reference cams
(00 1110 0000
dec
(= approach velocity)
) (180
)
bin
hex
) (E0
)
bin
hex
5-161
5
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