Parameters to configure axis position reading and display. Fagor DRO 30i, 30i-T, DRO 20i, 30i-T B, 20i-T, DRO 30i for lathes, DRO 20i for lathes, 20i-T B

32 Pages

3.7 Parameters to configure axis position reading and display.

The digits of digital parameters refer to the digits on the axis displays so digit

"1" (that can be changed with the [1] key) corresponds to the rightmost digit and "8" to the leftmost digit.

X X X X X X X X <-- binary code

8 7 6 5 4 3 2 1 <-- keys

PAR00

FUNCTION

Feedback configuration, different per axis, binary type.

This parameter sets the specific characteristics of the feedback device (rotary or linear encoder) used to read the axis position.

5

Not being used at this time (they must be set to "0")

Feedback resolution units:

Linear axis: 0 = mm, 1 = inches

Note:

These units refer to feedback pulses not to the position display.

PAR01

Type of axis: They must be set to zero.

Not being used at this time

Not being used; it must be set to "0".

Counting direction (0 = normal, 1 = reverse)

If an axis count increases or decreases in the opposite direction to the one desired, change the value of this digit.

Feedback resolution. Independent for each axis.

Possible values:

Linear axis: From 0.0001 mm up to 1.0000 mm (0.000005" to 0.03937")

Rotary axis: From 0.0001º to 1.0000º (from 1 to 999 seconds).

Factory setting: 0.0050 mm (5 µm).

Formula to calculate encoder resolution:

R = =

×

360

02 × PAR 03

Where:

R = Resolution in degrees p = Pulses per turn of the encoder

TTLfactor = Multiplying factor for TTL signal

Sfactor = Multiplying factor for sinusoidal signal

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PAR02

TTL multiplying factor (subdivision).

Independent for each axis.

Options: x4, x2, x1 and x0.5.

The factory setting is x4 and it is the one used for FAGOR linear encoders.

When using rotary encoders on linear axes, it should be calculating according to the number of pulses of the encoder, leadscrew pitch and the desired resolution as per the formula: p =

RxF

Where: p = Pulses per turn of the encoder

P = Leadscrew pitch in mm/turn

R = Resolution in mm/pulse

F = Multiplying factor to be applied.

PAR03

External multiplying factor when using distance-coded reference marks or

TTL signals.

Independent for each axis. It is not required when using absolute feedback.

Options: 1, 5, 10, 20, 25, 50.

Factory setting: 1

Feedback parameters

Signal Model

PAR00

XXX X XXX X

PAR01 mm

PAR02 PAR03 PAR14

TTL

TTL dif.

LX

MOX

COX

SOX

GOX

FOX

LOX

MT / MKT

CT

FT

MTD

MX / MKX

CX

SX

GX

FX

0000000X

0.005

0.001

4

X

5

25

10

00X0XX00

00X00010

00X01010

00X00110

Note:

In the table, X means that the bit is irrelevant.

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PAR10

Axis display.

Independent for each axis.

Not being used at this time (they must be set to "0"),

Turn the axis display off . 0 = No, 1 = Yes.

0 = no toggle, 1 = toggle

Axis display . 0 = radius, 1 = diameters. When it does not toggle.

Shrink or scaling factor independent for each axis.

Numeric value within ±9.999.

A "0" value means that no factor is to be applied. It is not applied when reading with respect to machine reference cero (its LED on) or onto the tool when applying tool compensation (TOOL led on).

The factory setting is “0”.

Use of alarms .

Indicates whether the alarms for feedrate, travel limits and feedback will be activated or not.

Not being used at this time (they must be set to “0”)

Active value of the feedback alarm.

(0=low, 1=high)

Detect feedback alarm provided by the linear encoder.

0 = No, 1 = Yes.

Detect travel limits (PAR12 and PAR13).

When this alarm is activated, the axis value blinks.

The blinking axis error is cleared by returning the axis within its limits

Detect feedback speed alarm when exceeding 200Khz (60m/min with a resolution of 1µm). Not applicable to a rotary axis.

Possible values: 0 (alarms off) and "1" (alarms on).

Factory-set (default) values: 0

Feedback and feedrate alarms are shown with (. . . . . . . .) at the display.

The speed alarm is cleared by pressing this key.

Linear compensation of a machine axis.

Independent for each linear axis.

Numeric value within ±99.999 millimeters per meter.

Factory setting: 0.

Even when selecting the display in inches, this value MUST ALWAYS BE IN

MILLIMETERS.

1 inch = 25.4 mm

When a rotary axis, the setting of this parameter will be ignored.

Offset of the reference point with respect to the reference zero of the scale, independent for each axis.

Usually, the machine reference zero (reference mark of the linear encoder) does not coincide with the absolute zero to be used.

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1

Therefore, when using standard Io's, this parameter must be assigned the value of the distance from the machine zero point to the feedback reference point.

Numeric value in resolution units for each axis.

Factory setting: 0.

This value will be in mm or inches depending on whether the INCH LED is off or on.

Personalize.

PAR12, PAR13

Display the feedrate of the moving axis (only for the 30i-T)

Operate always in mm.

Operate always in inches.

Do not display "Fagor DRO" on power-up.

If =0, normal zero setting and coordinate presetting (factory set)

If =1, quick zeroing of the position value displayed on each axis.

If =1, allow the selection of the work plane for bolt-hole drilling

Not being used; it must be set to "0".

The key affects one axis ( = 0) or both ( = 1).

If it affects each axis independently, after pressing this key, one must press the axis key.

It may toggle from absolute reading mode to incremental. This parameter determines whether this toggle affects one axis or both. Factory setting: "1".

Travel limit.

To set the negative axis travel limit.

This value will be in mm or inches depending on whether the INCH LED is off or on.

If PAR08 bit 2 = 1, when the axis exceeds the travel distance between both parameters, the relevant display starts blinking until it is positioned within these limits.

Binary type home search setting.

Not being used at this time (they must be set to "0")

If =1, it indicates mandatory home search on power-up.

Direction of the distance-coded Io ( 0 = Increasing , 1 = Decreasing).

1 = Pitch of the distance-coded Io 100 mm, 0 = 20 mm

1 = Pitch of the distance-coded Io: 40 mm. 0 = 20 mm

Type of Io of the linear encoder . (0 = fixed, 1 = distance-coded).

If =1, Linear encoder without I0.

To carry out a home search when the feedback device does not have a reference mark “Io”, this parameter must be set to “1”.

Factory setting: "0".

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Important:

Before capturing data for an accuracy graph, the axis (axes) must be homed (referenced) because the compensation will not be applied until they are homed. To use this compensation, it is recommended to set PAR 14 so as to force a mandatory home search on power-up.

3

4

1

2

2

1

0

5

6

7

7

6

5

4

3

1 2 3 4 5 6 7

The compensation point must have at least one point with no error

Multi-point leadscrew error compensation table (in mm)

Point Nr.

1

2

3

4

5

6

7

Position

0

200.000

275.250

427.345

700.500

760.000

1015.000

Error to be compensated

0

0.002

0.007

-0.005

-0.007

0.003

0.006

(error 0).

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or

POS 1

ERROR 1

Select the desired axis and enter the number of points to be used for the axis, up to 40. Zero means that there is no compensation table for the axis.

Where “ POS 1 ” is the point number to enter and “ ERROR 1 ” the amount of error to be compensated.

Pressing [ ENTER ] displays the position value (X axis display) and the amount of error to be compensated (Z axis display).

[Pos Nr]

[Error]

Error to be compensated = Master's actual position - displayed position

It goes on to edit the next point.

6 - 1

It sets the configuration of the axes.

Turn the feedback off after 2 minutes in "DISPLAY OFF" mode.

The displays turn off if none of the axis has moved in 30 minutes. Pressing any key or moving any of the axes turns the displays back on.

Not being used at this time. They must be set to “0”

PAR53

Select the number of decimals to be displayed.

Possible values: 0.0 to 6.6 .

The first digit corresponds to the number of decimals to be displayed in mm and the second digit to the number of decimals in inches.

When selecting a “0” value or a value greater than the number of decimals of

PAR01 it will display the factory set number of decimals.

Note:

It has no effect on rotary axes.

2

It enables various functions of the dro.

Not being used at this time.

1= To directly access parameter PAR05.

Not being used at this time.

1 = Enables the buzzer. It beeps when pressing any key.

To access the special functions (Hold, taper calculation)

1

It enables this key.

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Key Features

• 8 high 14.1mm LEDs per axis display
• Absolute and incremental operating modes
• Selectable diameter mode
• Tool Preset function
• Special operations: Scaling factor, Taper calculation, Calculator
• Easy setup mode for quick configuration
• Supports multiple feedback systems

Related manuals

How do I access the absolute mode?
Press the ABS key.
What is the purpose of the diameter mode?
To display twice the actual axis movement, useful for diameter-based machining.
How do I perform a tool preset?
Refer to section 2.4.1 of the manual.
What special operations are available?
Scaling factor, Taper calculation, and Calculator.
How do I configure the axis position reading and display?
Refer to section 3.7 of the manual.