Siemens SINUMERIK 840C Installation Instructions Manual page 300

09.95
NC MD 7
5147
Default value: All bits 0
Active: On POWER ON
Bit 3 Bit 3=1 The program to be read in is not read in, the cycle is still available for
processing. The cancel alarm 3240 "Subroutine not read in" is output.
The program number concerned is output in the block number of the
alarm. Reading in via RS 232 C/file transfer is continued.
Bit 3=0 The program to be read in is read in and is available for processing.
Cancel alarm 3239 "Cycle overwritten by subroutine" is output. The
program number concerned is output in the block number of the alarm.
Caution:
The alarm is not returned via the file transfer message sequence.
Bit 2 Do not delete read only programs. Is used in computer links.
Bit 2=0 A program is not deleted until it is released (end-of-program and Reset).
File transfer is suspended in the interim.
Bit 2=1 A read only program is not deleted.
Bit 1 Acknowledge message at once.
Is used in computer links. When this bit is set, the NC forwards a
request to the host computer before entering data in NC memory.
Bit 0 Positive acknowledgement of end message.
Is used in computer links.
When this bit is set, the NC responds to an incorrect message from the
host computer by sending a positive acknowledgement. When the NC
transmits an end message, it also expects a positive acknowledgement
from the host.
©
Siemens AG 1992 All Rights Reserved
SINUMERIK 840C (IA)
6 NC Machine Data (NC MD), NC Setting Data (NC SD)
Bit No.
6 5 4
6FC5197- AA50
6.6.1 General MD bits (general bits)
3 2 1
Protect
File transfer
EPROM
Do not Acknowl-
cycles from
delete read edge
overwrit.
only message at
(as from
programs once
SW 4)
0
Pos.
acknow. of
end
messages
6–115