·328·
Installation manual
CNC 8060
CNC 8065
6.
LOGIC CNC INPUTS AND OUTPUTS.
(REF: 1402)
Spindle modifiable signals.
4 Once the gear change is over, it cancels the indicator (M1002) and it lets the CNC know
by setting AUXEND high (=1).
(GEAR change completed) = RES M1002
The AUXEND mark must be kept high (=1) longer than the time period set by g.m.p.
MINAENDW so the CNC cancels the MSTROBE mark and concludes the gear change.
PLCCNTL
SANALOG
There is one signal for each spindle. The mnemonics for each spindle are the following:
PLCCNTL1 (can also be programmed as PLCCNTL)
PLCCNTL2 PLCCNTL3 PLCCNTL4
SANALOG1 (can also be programmed as SANALOG)
SANALOG2 SANALOG3 SANALOG4
These signals are used with analog spindles, position-Sercos, velocity-Sercos and
Mechatrolink.
When the PLC sets the PLCCNTL mark high (=1), the spindle decelerates with a ramp until
it stops and it is then controlled by the PLC. The SANALOG register sets the spindle
command voltage to be applied. The spindle control via PLC is used, for example, for
oscillating the spindle during a gear change.
• Analog spindle.
10 V of velocity command correspond to SANALOG = 32767. In other words:
For 4V, program SANALOG = (4x32767)/10 = 13107
For 4V, program SANALOG = (-4x32767)/10 = -13107
• Velocity-Sercos spindle.
The command in SANALOG will be given in 0.0001 rpm.
• Sercos spindle in position.
The command in SANALOG will be given in 0.0001 degrees.
• Mechatrolink spindle.
The command in SANALOG will be given in hundredths of a Hertz.
The command indicated in SANALOG is not applied with a ramp; therefore, it is up to the
PLC program to apply the command gradually when necessary.
The spindle reference point is not lost when the spindle is controlled via PLC. There is no
need to home the spindle again when its control is switched back to the CNC.
The PLC has no priority over a spindle synchronization. When attempting to control a
synchronized spindle (either master or slave) using PLCCNTL, a warning will be issued
indicating that it is not possible. Also, if the gear change of a synchronized spindle involves
a command from the PLC, this change will not be possible.
To Next Page
Loading...
