Siemens SINUMERIK 840D sl Function Manual page 1621

DB21, ...
DBX37.6 Read-in disable is ignored
Signal state 0 Read-in disable is not active (DB21, ... DBB6.1 == 0) OR
(read-in disable is active (DB21, ... DBX6.1 == 1) AND part program block is read-in disable-operative)
Corresponding to ... DB21, ... DBX37.7 (Stop at block end is ignored during single block (SBL))
DB21, ...
DBX37.7 Stop at block end is ignored during single block (SBL)
Edge evaluation:
The following machine data and part program commands are used to specify that the stop at block
end during single block (DB21, ... DBX0.4 == 1) is to be ignored:
● MD10702 $MN_IGNORE_SINGLEBLOCK_MASK (prevent single-block stop)
● MD20117 $MC_IGNORE_SINGLEBLOCK_ASUP (execute interrupt program completely in spite
● MD20106 $MC_PROG_EVENT_IGN_SINGLEBLOCK (Prog events ignore single block)
● SBLOF (suppress single block), SBLON (cancel single block suppression)
Part program blocks for which stop at block end during single block is ignored are designated as
single block-inoperative.
Signal state 1 Single block is active (DB21, ... DBX0.4==1) AND part program block is single block-inoperative.
Signal state 0 Single block is not active (DB21, ... DBB0.4 == 0) OR
(single block is active (DB21, ... DBX0.4 == 1) AND part program block is single block-operative)
Corresponding to ... Read-in disable is ignored. DB21, ... DBX37.6 (read-in disable is ignored)
DB21, ...
DBB208 - DBB271 Active G function of groups 1 to 60
Edge evaluation: No
Signal state <> 0 The G function displayed in BCD format or its mnemonic identifier is active in the G group.
Signal state = 0 No G function or G group mnemonic identifier is active.
Application exam‐
ple(s)
Special cases, In contrast to auxiliary functions, G functions are not output to the PLC subject to acknowledgement,
errors, ...... i.e. processing of the part program is continued immediately after the G function output.
Additional references A complete list of the G groups and G functions can be found in:
References: Programming Manual, Fundamentals.
Basic Functions
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
19.6 Mode group, channel, program operation, reset response (K1)
Signal(s) updated:
of single block)
Signal(s) updated: Cyclically
Val‐ Meaning
ue
1 1st G function of the G group
2 2nd G function of the G group
n nth G function of the G group
Bit 7
Value 128
Example:
G90 0
6 5 4
64 32 16
1 0 1
Z1: NC/PLC interface signals
3 2 1
8 4 2
1 0 1
0
1
0
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