Functions 09.2008
6SE7087-6QX70 (Version AK) Siemens AG
7-40 Compendium Motion Control SIMOVERT MASTERDRIVES
POS_OK forms the delay time from the time parameter 0 to 100.00 s
after reaching the target position in the window. A target position is
expected after a time of 0 to 100.00 s to be certain that the position is
held.
To influence POS OK externally or to ensure a handshake with another
unit or to hide the checkback, the signal is evaluated in parallel.
Setpoint mode output:
If the control binector "homing ON" [REF_ON] is active and travel takes
place in the selected direction REF_D, REF is set to HIGH to enable
the homing function on function diagram 789c.
Note: This signal is independent of status U866.1
ENABLE_POS/REF so that, when the positioner is enabled
again through status U866.1 ENABLE_POS/REF, status
ARFD = 1 is not reset.
(See the "Mode management" section.)
If the block is enabled (ENABLE_POS/REF = 1) and the "positioning
ON" binector [POS_ON] is active and if no homing movement
(REF_DRIVE = 1 ) is valid, status binector POS = 1 is shown.
(See the "Mode management" section.)
If the block is enabled (ENABLE_POS/REF = 1) and the "setup ON"
binector [SETUP_ON] is active and if no positioning or homing
movement (REF_DRIVE = 1 ) is active ([POS_ON] and [REF_ON] =
LOW), status binector [SETUP] = 1 is shown.
(See the "Mode management" section.)
If the "positioning" status binector [POS] or the "homing" status binector
[REF] or the "setup" status binector [SETUP] is active, this is shown
through the status binector [PSR] = HIGH.
If the block is enabled (ENABLE_POS/REF = 1 and
REF_TYP = 1 and REF_ON =1), REF_DRIVE is set to 1.
SET_REF_D (B0895) = REF_D (source U866.14), irrespective of all
operating modes.
The "current POS_TYP" status binector [POS_TYP_ACT] always
shows the signal level of the last valid, i.e. transferred, status binector
[POS_TYP].
See section about [POS_TYP] control binector.
[POS_TYP_ACT] = 0:
ABSOLUTE positioning through the [POS_TYP] control binector is
transferred/valid.
[POS_TYP_ACT] = 1:
RELATIVE positioning through the [POS_TYP] control binector is
transferred/valid.
POS_OK delay time
External position OK
B0871: REF homing
B0872: POS
positioning
B0873: SETUP
B0877: PSR
positioning/homing/
setup active
B0893: REF_DRIVE
homing movement
active
B0895: SET_REF_D
preferred direction
B0874:
POS_TYP_ACT
current POS_TYP
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