Reference Manual
Turbo PMAC/PMAC2 Software Reference
Turbo PMAC On-line Command Specification 322
See Also:
Data Gathering Function (Analysis Features)
I-variables I5000 – I5051
On-line commands DEFINE GATHER, GATHER, LIST GATHER, DELETE GATHER
Gathering and Plotting (Turbo PMAC Executive Program Manual)
F
Function: Report motor following error
Scope: Motor specific
Syntax: F
This command causes Turbo PMAC to report the present motor following error (in counts, rounded to the
nearest tenth of a count) for the addressed motor to the host. Following error is the difference between
motor desired and measured position at any instant. When the motor is open-loop (killed or enabled),
following error does not exist and Turbo PMAC reports a value of 0.
Example:
F ; Ask for following error of addressed motor
12 ; Turbo PMAC responds
#3F ; Ask for following error of Motor 3
-6.7 ; Turbo PMAC responds
See Also:
Following Error (Servo Features)
I-variables Ixx11, Ixx12, Ixx67
On-line commands <CTRL-F>, P, V
Suggested M-variable definitions Mxx61, Mxx62
Memory map registers D:$0000DB, D:$00015B, etc.
FRAX
Function: Specify the coordinate system's feedrate axes.
Scope: Coordinate-system specific
Syntax: FRAX
FRAX({axis}[,{axis}...])
where:
{axis} (optional) is a character (X, Y, Z, A, B, C, U, V, W) specifying which axis is to be used in
the vector feedrate calculations
No spaces are permitted in this command.
This command specifies which axes are to be involved in the vector-feedrate (velocity) calculations for
upcoming feedrate-specified (F) moves. Turbo PMAC calculates the time for these moves as the vector
distance (square root of the sum of the squares of the axis distances) of all the feedrate axes divided by the
feedrate. Any non-feedrate axes commanded on the same line will complete in the same amount of time,
moving at whatever speed is necessary to cover the distance in that time.
Vector feedrate has obvious geometrical meaning only in a Cartesian system, for which it results in
constant tool speed regardless of direction, but it is possible to specify for non-Cartesian systems, and for
more than three axes.