Siemens SINUMERIK 840Di Function Manual page 1973

DB21, ...
DBX319.5 Repos DEFERAL Chan
Edge evaluation: no
Signal state 1 or All axes currently controlled by this channel have either no REPOS offset or their REPOS offsets
edge change are invalid.
0 → 1
Signal state 0 or Miscellaneous.
edge change
1 → 0
Corresponds to .... DB31, ... DBX70.0 (Repos offset)
DB21, ...
DBB376 PROG-EVENT-DISPLAY
Edge evaluation: no
Signal state 1 or The event associated with the bit has occurred.
edge change
0 → 1
Signal state 0 or The event associated with the bit is no longer pending.
edge change
1 → 0
Bit assignments Bit 0 → part program start from channel status RESET
Bit 1 → end of part program
Bit 2 → operator panel reset
Bit 3 → run-up
Bit 4 → 1st start after the search run
Bit 5 - 7 → reserved, currently always 0 part program
All bits 0 → no PROG-EVENT is active
Signal duration: at least one complete PLC cycle
NC/PLC Interface Signals (Z1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
2.9 Mode group, channel, program operation, reset response (K1)
Signal(s) updated: cyclic
Signal(s) updated: event-driven
Detailed Description
2-109