Siemens SINUMERIK 840Di Function Manual page 1939

DB21, ...
DBB60 - DBB64, M, S, T, D, H, F functions Additional info "Quick" (fast acknowledgment)
DBB66 - DBB67
Edge evaluation: no
Signal state 1 or One M, S, T, An D, H, or F function has been output to the interface with a new value together with
edge change the associated change signal at the beginning of an OB1 cycle.
0 → 1 In this case, the additional info "Quick" indicates the quick help function.
Signal state 0 or The change signals are reset by the PLC basic program at the start of the next OB1 cycle.
edge change The value of the data involved is not valid.
1 → 0
DB21, ...
DBX59.0 - DBX59.4 M function 1-5 not included in list
Edge evaluation: no
Signal state 1 or M function is greater than 99 (for extended address = 0) or for extended address > 0, not included
edge change in the decoding list.
0 → 1
This signal is available - together with the associated M change signal - for one OB1 cycle.
Cause:
•
•
Remedy, e.g.:
•
•
Signal state 0 or M function less than 99 (for extended address = 0) or for extended address > 0 included in the
edge change decoding list.
1 → 0
DB21, ... M functions 1 to 5
DBB68 - DBB97
Extended address M functions 1 to 5
Edge evaluation: no
Signal state 1 or Up to 5 M functions programmed in an NC block are simultaneously made available here as soon
edge change as the M change signals are available.
0 → 1
Value range of M functions: 0 to 9999 9999; integer number
Value range of the extended address: 0 to 99; integer number
The M functions remain valid until they are overwritten by new M functions.
Signal state 0 or •
edge change
•
1 → 0
NC/PLC Interface Signals (Z1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Signal(s) updated: Job-controlled by NCK
Signal(s) updated: Job-controlled by NCK
Incorrect M function programmed
M function not configured in the decoding list of the PLC
PLC sets read-in disable
Output of a PLC alarm
Signal(s) updated: Job-controlled by NCK
After PLC power-up.
All help functions are deleted before a new function is entered.
Detailed Description
2.8 Auxiliary function output to PLC (H2)
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