Z1: NC/PLC interface signals
19.12 Feeds (V1)
Basic Functions
1736
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Application
example(s)
In the PLC user program, it can be identified via the interface signal that the spindle setpoint speed
has not been reached. Possible responses:
• Indicate that the status is permissible and enable path feed:
DB21, ... DBX6.0 = 0 (feed disable)
• Disable path feed or entire channel:
DB21, ... DBX6.0 = 1 (feed disable)
DB31, ... DBX83.5 (spindle in setpoint range) is processed
The interface signal indicates if the programmed set speed is unattainable. The feed can be enabled
nonetheless by means of the PLC user program.
The PLC user program can flag this state as permissible and enable the path feed, or it can disable
the path feed or the complete channel, IS:
Corresponding to ...
DB21, ... DBX6.0 (feed disable)
DB31, ... DBX4.3 (feed / spindle stop)
DB31, ... DBX83.5 (spindle in setpoint range)
DB31, ...
DBX83.5
Spindle in setpoint range
Edge evaluation: yes
Signal(s) updated: Cyclic
Signal state 1 or
edge change
0 → 1
The actual speed of the spindle deviates from the set speed by less than the spindle speed
tolerance:
MD35150 $MA_SPIND_DES_VELO_TOL.
Signal state 0 or
edge change
1 → 0
The actual speed of the spindle deviates from the set speed by more than the spindle speed
tolerance:
MD35150 $MA_SPIND_DES_VELO_TOL.
Normal status during the acceleration/deceleration phase of the spindle.
Signal irrelevant for
...
... All spindle modes except for control mode (speed mode).
Application
example(s)
Feed enable in the channel only at the end of the acceleration phase of the spindle:
IF ( DB31, ... DBX83.5 (spindle in setpoint range) == 1 )
THEN ( DB21, ... DBX6.0 (feed disable) = 0 )
ELSE ( DB21, ... DBX6.0 (feed disable) = 1)
Note: With the feed disable, the positioning axes are also stopped.
Corresponding to ...
MD35500 $MA_SPIND_ON_SPEED_AT_IPO_START
MD35500 $MA_SPIND_DES_VELO_TOL (spindle speed tolerance)
DB31, ...
DBX83.7
Actual direction of rotation clockwise
Edge evaluation: yes
Signal(s) updated: Cyclic
Interface signal is only valid if the spindle is rotating:
DB31, ... DBX61.4 (axis/spindle stationary) == 0
The actual direction of rotation is derived from the position measuring encoder.
Signal state 1 or
edge change
0 → 1
Actual direction of rotation: Right
DB31, ...
DBX83.2
Setpoint speed increased (programmed speed too low)