Siemens SINUMERIK 840D sl Function Manual page 497

S functions
S (spindle function)
Address extension
Value range
0 - 12
Remarks:
The master spindle of the channel is addressed if no an address extension is specified.
Application
Spindle speed.
Remarks
• S functions are assigned to auxiliary function group 3 by default.
• Without an address extension, the S functions refer to the master spindle of the channel.
• S-function-specific machine data:
H functions
H (aux. function)
Address extension
Value range
0 - 99
Remarks:
The functionality must be implemented by the user in the PLC user program.
Application
User-specific auxiliary functions.
Remarks
• H-function-specific machine data:
Basic logic functions: Auxiliary Function Output to PLC (H2)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
Meaning
Spindle number
5)
MD22210 $MC_AUXFU_S_SYNC_TYPE (Output time of the S functions)
Meaning
Any
MD22110 $MC_AUXFU_H_TYPE_INT (type of H-auxiliary function is an integer)
MD22230 $MC_AUXFU_H_SYNC_TYPE (Output time of the H functions)
Value
Value range
0 - +/-3.4028 ex 38
3)
Value
Value range
-2147483648 -
+2147483647
0 - +/-3.4028exp38
2) 3) 4)
1.2 Overview of auxiliary functions
Type Meaning
REAL Spindle speed
Type Meaning
INT Any
REAL
Brief description
Number
8)
3
Number
8)
3
9