Siemens SINUMERIK 840D sl Function Manual

Also see for SINUMERIK 828D Turning: Diagnostic manual Function manual Equipment manual Programming manual Operating manual

The following specifications apply to the feed override, axis travel keys and INC keysdepending on the active mode or on the coordinate system selected:● Feed override:– The feed override is transferred to the interface of the selected channel and to theinterface of the axes.– The feed override signals are transferred to the NC channel in addition to the "Rapidtraverse override" (DBB 5) interface byte if the "Feed override for rapid traverseeffective" HMI signal is set (exception: Switch setting "Zero"). "Rapid traverse overrideeffective" is also set with this HMI signal.● Machine functions for INC and axis travel keys:– When the MCS is selected, the signals are transferred to the interface of the selectedmachine axis.– When the WCS is selected, the signals are transferred to the geometry axis interfaceof the parameterized channel.The associated LEDs on the machine control panel derived from the acknowledgements ofthe relevant selections.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 leadingto a feed or spindle stop (this can be implemented, e.g. using the appropriate input signals inFC10: AL_MSG). The associated LEDs are activated at the same time.If the machine control panel fails, the signals it outputs are preset to zero; this also applies to"FeedHold" and "SpindleHold" output signals.FC25 or also FC19, FC24, FC26 can be called a multiple number of times in a single PLCcycle. In this case, the first call in the cycle drives the LED displays. Furthermore, all actionsof the parameterized block are carried out in the first call. In the following calls, only a reducedlevel of processing of the channel and mode group interface takes place. The geometry axesare 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 "ModeGroupNo" has beenincreased by B#16#10. When parameterizing, the HHU number is contained in the lower nibble(lower 4 bits)."BAGNo" = 0 or B#16#10 ⇒ mode group signals are not processed."ChanNo" = 0 ⇒ no processing of the channel signals.Flexible axis configurationIt is possible to be flexible in the assignment of axis selections or direction keys for machineaxis numbers.Support is now provided by the MCP blocks for the use of two MCPs, which are operatedsimultaneously, in particular for an application using two channels and two mode groups. Theblock call for the second machine control panel in OB1 cycle must be set after the call of the1st MCP. Note that the axis numbers are also specified in the parameterized mode groupnumber of the MCP block in the axis tables of the relevant MCP.P3: Basic PLC program for SINUMERIK 840D sl13.17 Block descriptionsBasic Functions1050 Function Manual, 01/2015, 6FC5397-0BP40-5BA2