Detailed description
2.12 Block descriptions
Basic logic functions: PLC Basic program powerline (P3 pl)
258 Function Manual, 11/2006, 6FC5397-0BP10-2BA0
• Feed override:
– The feed override is transferred to the interface of the selected channel and to the
interface of the axes.
– The feed override signals are transferred in addition to interface byte "Rapid traverse"
override (DBB 5) to the NC channel if MMC signal "Feed override for rapid traverse
effective" is set (exception: Switch setting "Zero"). "Rapid traverse override effective"
is also set with this MMC signal.
Machine functions for INC and axis travel keys:
– When the MCS is selected, the signals are transferred to the interface of the selected
machine axis (for 6 axes).
– When the WCS is selected, the signals of the first three axes are transferred to the
Geo axis interface of the parameterized channel. The remaining three axes are
transferred to the interface of the selected machine axis.
The handwheel selection signals from the MMC are decoded and activated in the
machine-axis or the Geo-axis interface of the handwheel selected (only if parameter
"HWheelMMC := TRUE" in FB 1).
The LEDs on the machine control panel derived from the selections in the acknowledgment.
Feedrate and spindle Start/Stop are not transferred to the interface, but output modally as a
"FeedHold" or "SpindleHold" signal. The user can link these signals to other signals leading
to a feed or spindle stop (this can be implemented, e.g., using the appropriate input signals
in FC 10: AL_MSG). The associated LEDs are activated at the same time.
In the case of machine control panel failure, the signals it supplies are set to zero.
Multiple calls of FC 26 or FC 19, FC 24, FC 25 are permitted in a single PLC cycle. In this
case, the first call in the cycle drives the LED displays. Moreover, all actions of the
parameterized block are performed in the first call. In the following calls, only a reduced level
of processing of the channel and mode group interface takes place. The geometry axes are
supplied with directional data only in the first block call in the cycle.
Single block processing can be selected/deselected only in the first cycle.
The second machine control panel can be processed if parameter
"BAGNo" has been increased by B#16#10. When parameterizing, the HHU number is
contained in the lower nibble (lower 4 bits).
"BAGNo" = 0 or B#16#10 means that the mode group signals are not processed.
ChanNo = 0 means that the channel signals are not processed.
The INC selections are transferred to the mode group interface. This results in runtime
improvements. This specification is activated via the DB10 ... DBX 57.0 takes place through
this block once after power up. Furthermore, two machine control panels can be handled in
parallel by this block. The module 2 call for the 2nd machine control panel in OB1 cycle must
come after the call of the 1st A support for 2 MSTT is still provided within certain restrictions
in the control panel blocks (support is not provided for standard axis numbers 10 to 31,
mutual interlocking of axis selections with 2 MSTT).
To Next Page
Loading...
Need help?
General
