Siemens SINUMERIK 840Di Function Manual page 616

Detailed Description
2.7 Program operation mode
2.7.1 Initial settings
Machine data
Conditions for program operation can be set using machine data.
MD settings
Initial settings
Initial settings can be programmed in channelspecific machine data for each channel. These
initial settings affect, for example, G groups and auxiliary function output.
Auxiliary function output
The timing for output of auxiliary functions can be predefined via machine data
AUXFU_x_SYNC_TYPE (MD22200, 22210, 22220, 22230, 22240, 22250, 22260), (output
timing for M, S, T, H, F, D, E functions). For further information, see:
References: /FB1/ H2, "Auxiliary Function Output to PLC"
G groups
An initial programming setting can be specified for each of the available G groups using
MD20150 $MC_GCODE_RESET_VALUES (reset state of G groups). This initial setting is
automatically active during program start or in Reset until it is deselected by a G command
from the same G group.
Machine data MD22510 $MC_GCODE_GROUPS_TO_PLC (G codes that are output to
NCK-PLC interface on block change/RESET) can be used to activate output of the G codes
to the PLC interface.
A list of G groups with the associated G functions and descriptions can be found in:
References: /PG/ "Programming Guide: Fundamentals"
2.7.2 Selection and start of part program or part-program block
Reset status
Channel status
A part program can be selected only if the relevant channel is in the Reset state.
2-80
Mode Group, Channel, Program Operation, Reset Response (K1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0