Festo Контроллер позиционирования CPX-CMAX - Manual (Page 336)

A. Notes on commissioning and service
A−28
Festo P.BE−CPX−CMA X−CONTROL−EN en 0908NH
A.4 Programming flow charts
The following section provides flow charts for CMAX control
via I/O for typical applications.
A.4.1 Create ready status
Requirements
ć Valve operating voltage and load voltage OFF.
ć Fieldbus master is ready for communication, so communiĆ
cation is established as soon as the CPX terminal is
switched on. If this is not the case, additional time must
be allowed for change of the byte order after establishĆ
ment of communication.
Notes
ć All enabling bits (enable, stop, brake) can be set right
from the beginning and simultaneously. Correspondingly,
feedback can be evaluated simultaneously.
ć When exchanging components, the movement test is
reset automatically, if applicable. The movement test
status should therefore be checked before switching on
and the test be re−run automatically or user−guided, if
required.
ć Setting the operating mode should be done in a separate
module of the control at a central position. See also secĆ
tion A.4.4.
ć If the CMAX reports a faults, depending on this fault, not
all of the expected status signals can be indicated. EvaluĆ
ation of SCON.ENABLED or SCON.OPEN, for example,
should then be aborted.