H, T and S Parameters
H-, T- and S-parameters are used to transfer parameters from the NC interpreter to the PLC.
In this context the H-parameter stands for auxiliary parameter and is of type DINT (32 bit signed).
The T and S parameters are of type WORD, and stand for Tool and Spindle.
Sample:
H=4711
R1=23
S=R1
T4711
T- and S-parameters take effect at the start of a block, H-parameters take effect at the end of the programmed block.