Fagor 8025 t cnc User Manual

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Version 7.1 (July 1996)

1. EXPANSION OF THE INTEGRATED PLC RESOURCES

1.1 INPUTS

1.1.1 TYPE OF FEEDRATE (G94/G95)

PLCI input I86 will show at all times the type of feedrate (F) selected a the CNC.

I86 = 0

G94. Feedrate in millimeters (inches) per minute.

I86 = 1

G95. Feedrate in millimeters (inches) per revolution.

1.1.2 TYPE OF CUTTING SPEED (G96/G97)

PLCI input I87 will show at all times the type of cutter speed selected at the CNC.

I87 = 0

G97. Constant tool center speed.

I87 = 1

G96. Constant cutting-edge speed

1.1.3 AXIS BEING HOMED (REFERENCED)

Input I88 indicates whether a home search is taking place and inputs I100, I101, I102, I103 and I104 indicates which
axis is being homed.

I88

Indicates whether any axis is being homed (0=No / 1=Yes)

I100

Indicates whether the X axis is being homed (0=No / 1=Yes)

I101

Indicates whether the 3rd axis is being homed (0=No / 1=Yes)

I102

Indicates whether the Z axis is being homed (0=No / 1=Yes)

I103

Indicates whether the 4th axis is being homed (0=No / 1=Yes)

I104

Indicates whether the C axis is being homed (0=No / 1=Yes)

1.1.4 AXIS MOVING DIRECTION

Inputs I42, I43, I44 and I45 will show, at all times, the moving direction of each axis.

I42

Indicates the moving direction of the X axis (0=Positive / 1=negative)

I43

Indicates the moving direction of the 3rd axis (0=Positive / 1=negative)

I44

Indicates the moving direction of the Z axis (0=Positive / 1=negative)

I45

Indicates the moving direction of the 4th axis (0=Positive / 1=negative)

1.2 OUTPUTS

1.2.1 ENABLING THE CYCLE-START KEY VIA PLCI

With this feature it is possible to set the treatment of the [CYCLE START] of the CNC via PLCI. Machine parameter
"P621(7)" indicates whether this feature is available or not.

P621(7) = 0

This feature is not available.

P621(7) = 1

This feature is available.

When using this feature, the way the CNC handles the [CYCLE START] key depends on the status of PLCI output O25
(CYCLE START ENABLE).

O25 = 0

The CNC ignores both the [CYCLE-START] key and the external [CYCLE-START] signal.

O25 = 1

The CNC takes into account both the [CYCLE-START] key and the external [CYCLE-START]

signal.

1.2.2 TRAVEL LIMITS SET VIA PLCI

With this feature, the travel limits of the axes may be set via PLCI. Machine parameter "P621(7)" indicates whether
this feature is available or not.

P621(7) = 0

This feature is not available.

P621(7) = 1

This feature is available.

To set the travel limits for each axis, use the following outputs:

O52 / O53

Positive / negative X axis limits

O54 / O55

Positive / negative 3rd axis limits

O56 / O57

Positive / negative Z axis limits

O58 / O59

Positive / negative 4th axis limits

When the PLCI activates one of this outputs while the axis is moving in the same direction, the CNC stops the axes and
the spindle and it displays an axis-travel-limit-overrun error.