Siemens SINUMERIK 840Di Function Manual page 694

Detailed Description
2.12 Program runtime/workpiece counter
Boundary condition for replacement subroutines
The following supplementary conditions apply to replacement subroutines:
• Replacements in synchronized actions are not permitted
• Replacements in technology cycles are not permitted
• A part program line that contains language constructs to be replaced at the block start
• Only the actions required for the respective replacements can be performed in the
• The system does not monitor whether the user actually replaces the respective function
2.12 Program runtime/workpiece counter
2.12
2.12.1 Function
The functions: "Program runtime" and "Workpiece counting" are not identical to the
corresponding tool management functions, but are intended to support machines, which
have no explicit tool management.
2.12.2 Program runtime
Function
The function "Program runtime" makes the NC internal timers available to monitor
technological processes via system variables.
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may not be placed in front of any block-wise synchronized actions.
replacement cycle.
in the replacement cycle. Therefore, if the user fails to implement this correctly, the actual
intended function can be omitted.
Mode Group, Channel, Program Operation, Reset Response (K1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0