P4: PLC for SINUMERIK 828D
14.6 Function interface
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
1197
• ASUB cannot be executed
Negative acknowledgment: (e.g. for Emergency Stop or channel reset request).
• Interrupt No. not allocated
Negative acknowledgment: Number has still not been allocated. → Execute PI service ASUB?!
• ASUB is being executed
ASUB in progress.
• ASUB completed
Positive acknowledgment: ASUB successfully completed. The start signal can not be reset.
14.6.5.2 Signal flow
① Function activated by user with a positive edge of
Start
.
②
ASUB is being executed
is signaled back.
③ The acknowledgement
ASUB completed
indicates the successful execution,
ASUB is being
executed
is withdrawn.
④ The signal to initiate the function is reset after receiving the acknowledgement from the user.
⑤ Signal change by the firmware
⑥ Not permitted! If function activation is reset prior to receipt of acknowledgment, the output
signals are not updated – without the operational sequence of the activated function being
affected.
⑦
ASUB cannot be executed
: Negative acknowledgement, error occurred.
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