Interface Signals; Continuous Path Mode, Exact Stop, And Lookahead (B1); Brief Description - Siemens SINUMERIK 808D Function Manual

Number Identifier
32260 RATED_VELO
32300 MAX_AX_ACCEL
32810 EQUIV_SPEEDCTRL_TIME [n]
36000 STOP_LIMIT_COARSE
36010 STOP_LIMIT_FINE
36020 POSITIONING_TIME
36030 STANDSTILL_POS_TOL
36040 STANDSTILL_DELAY_TIME
36050 CLAMP_POS_TOL
36060 STANDSTILL_VELO_TOL
36100 POS_LIMIT_MINUS
36110 POS_LIMIT_PLUS
36120 POS_LIMIT_MINUS2
36130 POS_LIMIT_PLUS2
36200 AX_VELO_LIMIT [n]
36210 CTRLOUT_LIMIT[n]
36300 ENC_FREQ_LIMIT n
36302 ENC_FREQ_LIMIT_LOW
36310 ENC_ZERO_MONITORING [n]
36400 CONTOUR_TOL
36500 ENC_CHANGE_TOL
36600 BRAKE_MODE_CHOICE
36610 AX_EMERGENCY_STOP_TIME
36620 SERVO_DISABLE_DELAY_TIME
4.5.2

Interface signals

Number
Axis/spindle-specific
DB380x.DBX1
DB380x.DBX2
DB380x.DBX1000
DB380x.DBX1000
DB390x.DBX0
DB390x.DBX0
5

Continuous path mode, exact stop, and LookAhead (B1)

5.1

Brief description

For continuous path control, the CNC processes a part program block by block. Only when the functions of the current block
have been completed, is the next block processed. Various requirements with respect to machining or positioning require
different block change criteria. There are two ways that the path axes can behave at block boundaries.
The first way is called "exact stop" and means that all path axes must have reached the set target position depending on an
exact-stop criterion before the next block change is initiated. To be able to fulfill the criterion, the path axes must reduce the
path velocity at every block change which, however, delays the block change.
Function Manual
01/2017
.Bit Name
.5 Position measuring system 1
.3 Clamping in progress
.0 / .1 Hardware limit switch minus / hardware limit switch plus
.2 / .3 2. Software limit switch minus / software limit switch plus
.2 Encoder limit frequency exceeded 1
.4 Referenced/synchronized 1
Name
Rated motor speed
Axis acceleration
Equivalent time constant speed control loop for feedforward
control
Exact stop coarse
Exact stop fine
Time delay exact stop fine
Standstill tolerance
Delay time standstill monitoring
Clamping tolerance with "Clamping active" interface signal
Maximum velocity/speed "Axis/spindle stationary"
1. Minus software limit switch
1. Plus software limit switch
2. Minus software limit switch
2. Plus software limit switch
Threshold value for velocity monitoring
Maximum speed setpoint
Encoder frequency limit
Encoder limit frequency resynchronization
Zero mark monitoring
Tolerance band contour monitoring
High backlash values /
Maximum tolerance for actual position value changeover
Braking behavior at hardware limit switch
Length of the braking ramp for error states
Cutout delay controller enable
31