Siemens SINUMERIK 840Di Function Manual page 471

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:
T functions
T (tool number)
5) 6)
Address extension
Value range
1 - 12
Remarks:
Tool names are not output to the PLC
Application
Tool selection.
Auxiliary Function Output to PLC (H2)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Meaning
Any
– MD22110 $MC_AUXFU_H_TYPE_INT
– MD22230 $MC_AUXFU_H_SYNC_TYPE
Meaning
Spindle number
(with active tool
management)
1)
Value
Value range
-2147483648 -
+2147483647
0 - +/-3.4028exp38
2) 3) 4)
Value
Value range
0 – 32000
(also symbolic tool
names for active tool
management)
1.2 Overview of auxiliary functions
Type Meaning
INT Any
REAL
Type Meaning
INT Selection of the tool
Brief Description
Number
8)
3
Number
8)
1
1-5