Help Function Output To Plc (H2); Signals To Channel (Db21; Signals From Channel (Db21 - Siemens SINUMERIK 828D Function Manual

Z1: NC/PLC interface signals

19.5 Help function output to PLC (H2)

19.5 Help function output to PLC (H2)
19.5.1

Signals to channel (DB21, ...)

DB21, ...
DBX30.5 Activate associated M01
Edge evaluation: no
Signal state 1 or PLC signals the NCK that the associated M01 (help function) should be activated.
edge change
0 → 1
Signal state 0 or De-activate the associated M01 (help function).
edge change
1 → 0
Corresponding to .... DB21, ... DBX 318.5 (associated M01 active)
19.5.2

Signals from channel (DB21, ...)

DB21, ...
DBB58,
M, S, T, D, H, F functions Modification
DBB60 - DBB65
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 change signal indicates that the appropriate value is valid.
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 fct. 1-5 not decoded
Edge evaluation: No
Signal state 1 or M function is greater than 99 (for extended address = 0) or for extended address > 0, not included in
edge change 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
1662
Signal(s) updated:
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
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Basic Functions