Siemens SINUMERIK 840C User Manual
Page 290
01.99
6 NC Machine Data (NC MD), NC Setting Data (NC SD)
6.6.1 General MD bits (general bits)
7
6
5
4
3
2
1
0
Bit No.
NC MD
5022
Delay of the
NC ready
signal by
1 IPO cycle
in case of
PLC failure
or 5 V
under-
voltage
(as from
SW 6.3)
Consider
software
limit switch
emergency
retraction
(as from
SW 6)
5 V under-
voltage
(as from
SW 6.3)
Retraction
in case of
PLC failure
(as from
SW 6.3)
Extended
stopping
1)
Stopping
also on
Emergency
OFF
1)
Control bits to define stopping procedure.
Bit 7 Bit 7=1 Delay of NC ready signal by 1 IPO cycle in case of PLC failure or 5 V under-
voltage.
Bit 6 Bit 6=1 The function ”Consider software limit switch with controlled emergency
retraction” is activated.
Bit 5 Bit 5=1 Enables release of the configured independent emergency retraction at 5 V
undervoltage.
Bit 4 Bit 4=1 Enables release of the configured independent emergency retraction in case of
PLC failure.
Bit 1 Bit 1=1 Stopping is extended by the phase T1 and T2, i.e. interpolator-controlled
continuation and deceleration.
Bit 1=0 When stopping signal is recognized deceleration starts immediately with speed
setpoint 0. The following axes go into controlled follow-up.
Bit 0 Bit 0=1 Stopping is also performed with Emergency stop. The following axes
subsequently go into controlled follow-up.
Bit 0=0 On Emergency stop deceleration with speed setpoint 0 is performed
immediately. Following axes go into controlled follow-up.
7
6
5
4
3
2
1
0
Bit No.
NC MD
5024
Automat.
block end
value synchr.
G105/G119
1)
Abort on
contour
violation
TRC
Default value:
0000 0110
Bit 1 Bit 1=1
In the case of G[..]105 and G[..]119, a G200 is generated by the NC for
this axis. The same restrictions apply here as for programmng of a G200
axis.
Bit 1=0
Automatic synchronization of end-of-block value with G[..]105 and
G[..]119. In the case of G[..]105 and G[..]119, no G200 is generated by
the NC for this axis.
Bit 0 Bit 0 = 1
If a contour violation occurs when tool radius compensation is active,
alarm 2021 ”Contour violation with TRC” is signalled. Processing of the
part program is interrupted, the alarm can be acknowledged with the reset
key.
Bit 0 = 0
If a contour violation occurs when tool radius compensation is active,
alarm 3021 ”Contour violation with TRC” is signalled. Processing of the
part program is not interrupted, the alarm is deleted with the acknowledge
key.
_______
1)
As from SW 4
©
Siemens AG 1992 All Rights Reserved 6FC5197- AA50
6–105
SINUMERIK 840C (IA)