Meaning Of Nc Md 5008, Bit 7; Influence Of The Modes On The Path Dimension Function From The Plc; Path Dimension From The Plc And Jog Operating Mode - Siemens SINUMERIK 840C Installation Instructions Manual

12.93
12.12.4
Bit 7=0:
Bit 7=1:
Default setting: 0
The following conditions generally apply:
Reset
NC stop
Read-in disable
+ Path dimension from PLC can be executed
– Path dimension from PLC cannot be executed
12.12.5
The function "Path dimension from the PLC" can be activated in the AUTOMATIC, MDA,
TEACH IN and JOG modes. The function is not legal in the REFPOINT and PRESET
submodes; in these modes, it is disabled and acknowledged negatively with an error number to
the PLC.

12.12.5.1 Path dimension from the PLC and JOG operating mode

If the specified NC channel is free, then the path dimension is traversed as soon as the
function is transferred via the command channel.
The path dimension function is disabled whenever:
• An incremental path is being traversed (INC, REPOS)
• A manual path is being traversed, i.e. a traverse key is pressed.
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SINUMERIK 840C (IA)
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Meaning of NC MD 5008, bit 7

Path dimension is started in the AUT/MDA modes only in the NC stop/RESET
state (read-in disable and end of block have no meaning).
Path dimension is started in NC stop/RESET state or on read-in disable and
end of block.
NC MD 5008.7
0
+
+
–
For reasons of safety, it is advisable to set this machine data bit to a
specific value. The following situation may occur: The NC MD
5008.7 is set and the path dimension from the PLC selected. If the
read-in disable is set, then the programmed path dimension is
traversed from the PLC as soon as the end of block is reached. The
axis traverses without any operator control action (e.g. NC stop)
taking place (danger of collision).
Influence of the modes on the path dimension function from
the PLC
ManualsBase.com
1
+
+
+
CAUTION
6FC5197- AA50
12 Functional Descriptions
12.12.4 Meaning of NC MD 5008, bit 7
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