Siemens SINUMERIK 840Di Function Manual page 1419

2.12.29.3 G Functions
General
The G functions programmed in the part program, ASUB or synchronized actions are
channel specifically transferred from the NC to the PLC:
• G functions from channel 1: DB21
• G functions from channel 2: DB22
• Etc.
The signal length is one PLC cycle.
POWER ON
After POWER ON, the value zero, i.e., active G groups undefined, is specified in the NC/PLC
interface for all G groups.
Part program end or abort
After part program end or abort, the last state of the G group is retained.
NC START
After NC START, the values in the 8 G groups specified in the machine data element:
MD22510 $NC_ GCODE_GROUPS_TO_PLC
are overwritten according to the initial setting defined via the machine data, as are the values
programmed in the part program.
Addresses in DB21, ...
DBB 208
DBB 209
DBB 210
DBB 211
DBB 212
DBB 213
DBB 214
DBB 215
DBB 216
DBB 217
DBB 218
DBB 219
DBB 220
DBB 221
DBB 222
DBB 223
DBB 224
DBB 225
DBB 226
DBB 227
PLC Basic Program Solution Line (P3 sl)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Variable
G_FKT_GR_1
G_FKT_GR_2
G_FKT_GR_3
G_FKT_GR_4
G_FKT_GR_5
G_FKT_GR_6
G_FKT_GR_7
G_FKT_GR_8
G_FKT_GR_9
G_FKT_GR_10
G_FKT_GR_11
G_FKT_GR_12
G_FKT_GR_13
G_FKT_GR_14
G_FKT_GR_15
G_FKT_GR_16
G_FKT_GR_17
G_FKT_GR_18
G_FKT_GR_19
G_FKT_GR_20
Type Basic position
Byte 0
Byte 0
Byte 0
Byte 0
Byte 0
Byte 0
Byte 0
Byte 0
Byte 0
Byte 0
Byte 0
Byte 0
Byte 0
Byte 0
Byte 0
Byte 0
Byte 0
Byte 0
Byte 0
Byte 0
Detailed Description
2.12 Block descriptions
Comment
Active G function of group 1
Active G function of group 2
Active G function of group 3
Active G function of group 4
Active G function of group 5
Active G function of group 6
Active G function of group 7
Active G function of group 8
Active G function of group 9
Active G function of group 10
Active G function of group 11
Active G function of group 12
Active G function of group 13
Active G function of group 14
Active G function of group 15
Active G function of group 16
Active G function of group 17
Active G function of group 18
Active G function of group 19
Active G function of group 20
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