MC_SetOverride, MCP_SetOverride – Set override factors

Block SymbolsLicensing group: MOTION CONTROL

Function Description

The MC_SetOverride and MCP_SetOverride blocks offer the same functionality, the only difference is that some of the inputs are available as parameters in the MCP_ version of the block.

The MC_SetOverride block sets the values of override for the whole axis, and all functions that are working on that axis. The override parameters act as a factor that is multiplied to the commanded velocity, acceleration, deceleration and jerk of the move function block.

This block is level-sensitive (not edge-sensitive like other motion control blocks). So factors are update in each step while input Enable is not zero. It leads to reacalculation of movement’s path if a block like MC_MoveAbsolute commands the axis. This recalculation needs lot of CPU time and also numerical problem could appear. For this reasons, a deadband (parameter diff) is established. The movement’s path recalculation is proceeded only if one of the factors is changed more then the deadband.

Note: all factor must be positive. Factor greater then 1.0 are possible, but often lead to overshooting of axis limits and failure of movement (with errorID=-700 - invalid parameter; if factor is set before start of block) or error stop of axis (with errorID= -701 - out of range; if factor is changed within movement and actual value overshoot limit).

Inputs

uAxis	Axis reference (only RM_Axis.axisRef–uAxis or yAxis–uAxis connections are allowed)	Reference
Enable	Block function is enabled	Bool
VelFactor	Velocity multiplication factor	Double (F64)
AccFactor	Acceleration/deceleration multiplication factor	Double (F64)
JerkFactor	Jerk multiplication factor	Double (F64)

Outputs

yAxis	Axis reference (only RM_Axis.axisRef–uAxis or yAxis–uAxis connections are allowed)	Reference
Enabled	Block function is enabled	Bool
Busy	Algorithm not finished yet	Bool
Error	Error occurred	Bool
ErrorID	Result of the last operation	Error
	i .... REXYGEN general error

Parameter

diff	Deadband (difference for recalculation) $↓$ 0.0 $↑$ 1.0 $⊙$ 0.1	Double (F64)

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