Function: M functions or additional functions start actions during the interpolation of G code.
The interpolator decelerates to velocity 0, sends the number of the queued M function to the output wM, and waits for the confirmation in bAcknM before accelerating again. As opposed to the switch point, the program remains at the current position until the M function is confirmed by setting the input at the interpolator.
If SMC_PreAcknowledgeM is executed, then the function block confirms the M function early. If the function block is executed on time, then the interpolator does not halt and the program continues as if the M instruction was not present.
An M function is implemented by the application and not defined by the system.
Syntax
M K L O
|
G code word |
Description |
|
M |
Number of the M function, M >0 Note: The numbers 65533 - 65535 are reserved for internal functions. |
|
K |
Numeric parameter (LREAL) |
|
L |
Numeric parameter (LREAL) |
|
O |
References with O$var$ a variable of type SMC_M_PARAMETERS that contains other parameters. In the application, the parameter values of the variables are read at runtime by means of the function SMC_GetMParameters. Moreover, all parameters are evaluated at the time of decoding and saved in the data structure SMC_GEOINFO of the buffer SMC_OUTQUEUE. As a rule, this happens at a time before executing the M function at the interpolator. |
Examples
M with parameter
The M function 10 starts. For the program execution of N90, the system waits until the confirmation is available.
N90 M10 K100.7
M with additional parameter
The M function 10 starts. The user-defined data structure g_myMParams (data type SMC_M_PARAMETER) is referenced with O$var$. g_myMParams contains additional parameters. The values of K, L, and the parameters from g_myMParams can be read at the time of the path stop of the M function. This is done by calling an instance of the function block SMC_GetMParameters.
N150 M13 O$g_myMParams$
See also
