['%' <program name>]

Header

Optional

Starts with %, followed by the program name separated by a space or TAB

<Block>

The block is processed word by word from right to left.

/

Step suppression If a block starts with / and the command CNC ‣ Step suppression is selected, then the block is not executed.

N<block number>

The block number is used as a marker for defining jump targets.

Example: N01

G<number>

Travel command

• If no travel command is specified in a block, then the travel command in the previous block is supple­mented automatically.

• Uppercase and lowercase is ignored.

• Leading zeros are ignored. Therefore: G01 = g1

• Corresponds to a path element or path object.

  Example: G1 (linear), G2 (arc)

• Velocity at which the path objects are interpolated; in principle corresponds to the set path velocity, path acceleration, and path deceleration. The interpolator makes sure that these limiting values are not exceeded.

<G code word>

G code word

• Consists of the G code word recognition: Letter followed by a number.

  Example: E100

• Uppercase and lowercase is ignored.

• Leading zeros are ignored.

• Writes the number of the word to a variable. The letter of the word is the variable name. The travel command access this.

• All numbers can be floating point values. This does not apply to travel command G<number>, M function M<number>, and switch point H<number.>

• The words of a block are separated by a space or tab.

()

Comment

• The characters between the parentheses are inter­preted as a comment. Nested comments are not supported.

Interpolation between two consecutive blocks

The velocity when transitioning two adjacent objects is determined by the following rules:

• If one of the two objects is a positioning of G0, then the transition velocity = 0.

• If the angle between the tangents of both path elements at the transition is greater than the angle tolerance, then the transition velocity = 0.

• Otherwise, the transition velocity is the least specified velocity of both path elements.

• As a rule, the travel command is responsible for an interpolation of the target position of the last travel command to the target position, which was specified by the current travel command, to be performed. The first travel command starts at the position that was defined in the decoder or CNC editor. If this position is not defined, then the starting point is X=0, Y=0, Z=0.

A

Target position of the additional spline axis.

For a coordinate transformation in the decoder coordinates system, the word contains an angle.

B

C

D

• Tool radius for compensation G40-G42

• Tool distance for angle rounding G50-G51

• Variable value G36/G37

E

Maximum path acceleration/deceleration in [u/sec²]. Value > 0: acceleration; value < 0: deceleration

EF

Path acceleration/deceleration for G0 motion.

E<axis>

Individual acceleration/deceleration (>0/<0) of the specified additional axis <axis>.

Additional axes are A, B, C, P, Q, U, V, W, and also Z in 2D mode.

If this G code is used, then the path processing block SMC_ExtendedVelocityChecks must be used for restricting the velocity.

F

Velocity (in [u/sec]). "Feed"

FF

Velocity for G0 movements

F<axis>

Individual velocity of specified additional axis <axis>.

Additional axes are A, B, C, P, Q, U, V, W, and also Z in 2D mode.

If this G code is used, then the path processing block SMC_ExtendedVelocityChecks must be used for restricting the velocity.

G

Path condition

H

Switch point (H function). Positive: Switch on. Negative: Switch off.

I

• X-coordinate of the circle/ellipse midpoint for G02/G03/G08/G09

• X-coordinate of the vertex of the parabola for G06

• Normal vector (X) for the 3D plane function

• Parameters for activating extended preprocessing functions for G38/G39

• Scaling in the X-direction for G54/G55/G56

J

• Y-coordinate of the circle/ellipse midpoint for G02/G03/G08/G09

• Y-coordinate of the vertex of the parabola for G06

• Normal vector (Y) for the 3D plane function

• Parameters for activating extended preprocessing functions for G38/G39

• Scaling in the Y-direction for G54/G55/G56

K

• Direction of the primary ellipse axis; mathematically: 0° = O, 90° = N, ...

• Jump condition for G20

• dT1 parameter value for M function

• Z-coordinate of the circle midpoint for G02/G03 in 3D mode

• Normal vector (Z) for the 3D plane function

• Parameters for activating extended preprocessing functions for G38/G39

• Scaling in the Z-direction for G54/G55/G56

L

• Absolute switch position for H function, measured from the start of the path element (if position > 0) or measured from the end of the path element (if position < 0).

• Jump target for G20.

• dT2 parameter value for M function.

• Number of the additional axis for G70 and G71.

M

Additional option for machinery; also M function

O

• Relative switch point position with value range [0..1] for H function.

• Variable value G36/G37.

• Data structure for the parameters for an M function.

P

Target position of the additional linear axis P.

P<axis><period>

Configuration of the modulo axes.

If Period = 0 applies (example: PA0), then the behavior of the axis is linear. (modes).

Q

Target position of the additional linear axis Q

R

• Circle radius alternative to I, J with G02/G03.

• Length ratio of the elliptical secondary/primary axis in the value range of [0..1] with G08/G09.

S

S profile for linear axes. Positive: Switch on. Negative: Switch off.

Axis

• 3: Z, if Z is in 2D mode

• 7: P

• 8: Q

• 9: U

• 10: V

• 11: W

T

Command-specific parameter

U

Target position of the additional linear axis U

V

Target position of the additional linear axis V

W

Target position of the additional linear axis W

X

X-coordinate of the target position

Y

Y-coordinate of the target position

Z

Z-coordinate of the target position