Siemens SINUMERIK 880 SW 6 Planning Manual page 302

01.93
Sequence:
1) The axis travel command (e.g. X -) releases the clamp and issues servo enable.
2) Servo enable cancels servo disable.
3) As soon as the clamp is released, the feed enable signal is given and axis traverse com-
mences.
4) If the travel command is removed, the axis stops and is clamped again; the feed enable
signal is cancelled.
5) After clamping, the servo enable signal is cancelled; the servo disable signal is output
again after a delay t (machine data)
w
c)
Self-installation with IAR
The PLC operating system contains a special program section for self-installation with the inte-
grated drive control. The SERVO ENABLE signals in DB 32 are ignored as long as the self- in-
stallation program of the PLC operating system is active. In this case the PLC operating
system itself generates a SERVO ENABLE signal for the NC.
2ND SOFTWARE LIMIT SWITCH +/-
1 signal: 2nd software limit switch active for +/- direction.
0 signal: 1st software limit switch active.
Example of application:
Reduction of permissible traversing range with the tailstock swung in.
JOG +/-
1 signal: In the setup modes, the axis is moved in the preset direction.
0 signal: No effect.
Notes:
• The axis traversing speed is determined by machine data (MD 288* for feedrate, MD 292*
for rapid traverse) in accordance with the mode.
• If the plus (+) and minus (-) keys of an axis are pressed at the same time, no travel
command is given.
• Per mode group, as many axes can be traversed at the same time as there are channels
belonging to the mode group. If several direction keys are pressed at the same time, the
sequence in which they are pressed determines which ones are active.
• On the 880M control, FB 79 is used to transfer the DIRECTION KEYS and RAPID TRA-
VERSE to the axis-specific interface according to the position of the axis selector switch.
FB 67 is available for this function on the 880T control.
_______
c) up to and including software version 6
©
Siemens AG 1991 All Rights Reserved
SINUMERIK 880 (PJ)
.
6ZB5 410-0HE02
9 Axis/PLC Interface (DB 32)
9.3 Signals to axis
DW K+1, bit 8 and 9
DW K+1, bit 6 and 7
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9 15