The Acu-Rite 300S 532904-29 Digital Readout (DRO) is for 4-axis turning, milling, and grinding.

The 300S is equipped with a 5.7” LCD monitor that replaces the cathode-ray monitor of the VRO300. The “soft keys” are used for diverse functions, mainly for operation and parameterization. The monitor is the same one currently used in the 200S series. In addition, the 300S is capable of all the functions of a programmable counter, such as the creation, editing, storing and running of programs. Numerous programs with differing names can be saved in the program list.

Specifications
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Application     Milling, drilling, turning
Axes     2, 3, and 4 from A to Z and Z0
Encoder inputs     TTL
Display step     Adjustable, max. 7 digits
Linear axis: 1 mm to 0.0001 mm
Angular axis: 1° to 0.001° (00° 00′ 01”)
Display     5.7” monochrome flat-panel display for position values,
dialogs and inputs, and soft keys
Status display     Tool, reference point, operating function, feed rate, ABS/INC, mm/inch, stopwatch
Axis display     Standard
Functions

10 reference points
99 tools
REF reference-mark evaluation for distance-coded or single reference marks
Distance-to-go mode
Axis Coupling
Scaling factor
mm/inch switching
Absolute-incremental display
On-screen help and operating instructions
Graphic positioning support (Near Zero warning)
Pocket calculator

For turning

Taper calculator
Radius/diameter switching
Freezing the tool position for back-off
Vectoring: X/Y display of the traverse path with inclined top slide

For milling/drilling/boring

Calculation of positions for hole patterns (circular and linear patterns)
Tool radius and tool length compensation
Probing functions for reference-point acquisition with Edge Finder: “Edge,” “Centerline” and “Circle center”

Cycles     Oblique line, circular arcs; only for milling, drilling, boring: circular and linear hole patterns
Error compensation

Axis error: Linear and nonlinear over up to 200 points
Backlash compensation: for compensation of reversal error

Data interface     RS-232-C/V.24 300 to 115 200 baud

Switching I/O

Input for Edge Finder (with switching signal or contact triggering)
Further input/outputs over the IOB 49 external input/output unit

Accessories     Tilt/swivel mount, mounting arm, Edge Finder (for milling)
Power connection     100 V~ to 240 V~ (–15 % to +10 %), 47 Hz to 63 Hz; 30 W
Operating temperature     0° C to 45° C
Protection (IEC 60 529)     IP 40 (IP 54 front panel)
Weight     2.6 kg