Siemens SINUMERIK 840C Installation Instructions Manual page 623

9 Drive Servo Start-Up Application (as from SW 3)
Internal The following conditions must be fulfilled before the traversing motion can be
started:
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
The traversing motion is initiated through actuation of the NC start hardkey.
PLC Axes with a mechanical brake also require a brake activation function. Select the
"PLC" enables for this purpose. In this enable mode, the PLC signal "Motion en-
able drive test" acts in addition to the traverse enabling commands listed above.
The traversing motion is likewise initiated through actuation of the NC start hard-
key.
Use the request signal "Traverse request drive test" which is generated with
selection of the measuring function in the PLC user program and the
acknowledgement signal "Motion enable drive test" (see Interface Description –
DB29 and DB31).
S
S
S
S
PLC without NC In this enable mode, a positive edge of the PLC signal "Motion enable drive test"
(as from SW 4) is required to start the traversing motion.
NC start is not necessary. In this mode, the number of internal enable monitoring
functions is reduced to axial signals
S
S
S
S
S
and to the general signals
S
S
S
S
9–2
NC operating mode "JOG"
No traversing command for axis/spindle
No follow-up mode (for axes)
No parking
No axis/spindle disable
No alarms
No EMERGENCY STOP
No warm restart
Channel in reset
Controller enabling command
Drive enabling commands
Feed/spindle enabling command
No HW limit switch (for axes)
Feed override 0 (for axes)
No PLC spindle control
No violation of working area limits (for axes)
On "Traverse request drive test", switch on the control and enable the brake.
Acknowledge the enabling of the control and brake with "Motion enable drive
test", following expiry of a delay timer if appropriate.
The measuring function can only start when this sequence is complete.
On completion of the measurements – when "Traverse request drive test"
disappears, disable the brake and control again.
Controller enable
Follow-up
Parking
Pulse enable
Motion enable drive test
Key reset
NCK mode switchover
EMERGENCY STOP
Warm restart.
Siemens AG 2001 All Rights Reserved 6FC5197–jAA50
09.95
10.94
SINUMERIK 840C (IA)