Siemens SINUMERIK 840D sl Function Manual

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DB31, ...DBX1.7 Override activeEdge evaluation: No Signal(s) updated: CyclicallySignal state 1 oredge change0 → 1Feedrate override active:The axis-specific feedrate override between 0 and a maximum of 200% entered in the PLC interfaceis used.The override factor is defined using the machine data:MD12000 $MN_OVR_AX_IS_GRAY_CODE (axis feedrate override switch gray coded)andMD12010 $MN_OVR_FACTOR_AX_SPEED [n] (evaluation of the axis feedrate override switch).Spindle override active:The spindle override - input at the PLC interface - of 0 to a maximum of 200% is taken into account.The override factor is entered using the machine data:MD12060 $MN_OVR_SPIND_IS_GRAY_CODE (spindle override switch, Gray coded)andMD12070 $MN_OVR_FACTOR_SPIND_SPEED [n] (evaluation of the spindle override switch).Signal state 0 oredge change1 → 0The existing axis-specific feedrate override or spindle override is not active.If the feedrate override is inactive, "100%" is used as the internal override factor.Exceptions are the zero setting for a binary interface and the 1st switch setting for a Gray-codedinterface. In these cases, the override factors entered at the PLC interface are used.With a binary interface, the override factor = 0. With a gray-coded interface, the value entered in themachine data for the 1st switch setting is output as the override value.Application exam‐ple(s)The override value is generally specified using the axis-specific feedrate override switch or the spindleoverride switch on the machine control panel.The "feedrate override active" signal can be used to enable the feedrate override switch from the PLCuser program, e.g. using the key-operated switch when commissioning a new NC program.Special cases,errors, ......The spindle override is always accepted with 100% in the spindle "Oscillation mode".The spindle override acts on the programmed values before the limits (e.g. G26, LIMS...) intervene.The feedrate override is ineffective for:● Active G33● Active G63 (the override is defined in the NC at 100%)● Active G331, G332 (the override is defined in the NC at 100%)The spindle override is inactive for:● Active G63 (the override is defined in the NC at 100%)Corresponding to ... DB31, ... DBB0 (feed/spindle override)Z1: NC/PLC interface signals19.12 Feeds (V1)Basic Functions1666 Function Manual, 01/2015, 6FC5397-0BP40-5BA2