Siemens SINAMICS S120 Function Manual page 269

● Task parameter (command-dependent significance) (p2622[0...63])
Intermediate stop and reject traversing task
The intermediate stop is activated when a 0 signal at p2640. After activation, the system
brakes with the parameterized deceleration value (p2620 or p2645).
The current traversing task can be canceled by a 0 signal at p2641. After activation, the
system brakes with the maximum deceleration (p2573).
The "intermediate stop" and "cancel traversing task" functions are only effective in the
modes "traversing blocks" and "direct setpoint input/MDI".
POSITIONING
The POSITIONING task initiates motion. The following parameters are evaluated:
● p2616[x] Block number
● p2617[x] Position
● p2618[x] Velocity
● p2619[x] Acceleration override
● p2620[x] Acceleration override
● p2623[x] Task mode
The task is executed until the target position is reached. If, when the task is activated, the
drive is already located at the target position, then for the block change enable
(CONTINUE_ON-THE-FLY or CONTINUE_EXTERNAL, the text task is selected in the same
interpolation clock cycle. For CONTINUE_WITH_STOP, the next block is activated in the
Drive Functions
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
the next task at any time during the traveling phase. If "External block change" is not
triggered, the axis remains in the parameterized target position until the signal is
issued. The difference here is that with CONTINUE_EXTERNAL, a flying changeover
is carried out at the braking point if "External block change" has not been triggered,
while here the drive waits for the signal in the target position.
0101, CONTINUE_EXTERNAL_ALARM
This is the same as CONTINUE_EXTERNAL_WAIT, except that alarm A07463
"External traversing block change in traversing block x not requested" is output when
"External block change" is not triggered by the time the drive comes to a standstill.
The alarm can be converted to an alarm with a stop response so that block processing
can be aborted if the control signal is not issued.
– cccc: positioning mode
With the POSITON task (p2621 = 1), defines how the position specified in the
traversing task is to be approached.
0000, ABSOLUTE:
The position specified in p2617 is approached.
0001, RELATIVE:
The axis is traveled along the value specified in p2617.
0010, ABS_POS:
For rotary axes with modulo offset only. The position specified in p2617 is approached
in a positive direction.
0011, ABS_NEG:
For rotary axes with modulo offset only. The position specified in p2617 is approached
in a negative direction.
Function modules
7.9 Basic positioner
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