Siemens SINUMERIK 840C Installation Instructions Manual page 373

6 NC Machine Data (NC MD), NC Setting Data (NC SD)
6.7.1 Axis-specific MD bits 2 (axial bits 2)
NC MD
1820*
Default value:
Bit 7 Bit 7=1 The dynamic contour monitoring function is switched off.
Bit 6
Bit 6=1 Monitoring is carried out to determine how many directional changes have
Bit 6=0 Monitoring switched off.
Bit 5
Bit 5=0 Number of encoder intervals between two reference marks of the second
Bit 5=1 Number of encoder intervals between two reference marks of the second
Bit 4
Bit 4=0 Second measuring system without external zero mark (BERO)
Bit 4=1 Second measuring system without external zero mark (BERO)
Bit 3
Bit 3=0 Number of encoder intervals between two reference marks of the first
Bit 3=1 Number of encoder intervals between two reference marks of the first
Bit 2
Bit 2=0 First measuring system without external zero mark (BERO)
Bit 2=1 First measuring system with external zero mark (BERO)
Bit 1
Bit 1=1 Monitoring is performed to detect whether pulses have been lost between two
Bit 1=0 Monitoring switched off
Bit 0
Bit 0=1 The setpoint smoothing filter parameterized in MD 1272* is switched on.
_______
1) Speed-related errors in referencing occur with reference point approach with external zero mark (BERO).
This is caused by the delay time of the optocoupler at the input.
To avoid such errors in referencing, the maximum velocity must be limited.
6–188
More user manuals on
7 6 5
No. of
Pulse
Contour
encoder
encoder
pulses (611D)
monitoring
monitoring
2nd meas.
not active
system (as
on
from SW 3)
0000 0000
Pulse encoder monitoring on
occurred between two measuring clock pulses. If too many directional changes
are detected, alarm 140* is triggered (also see description of alarm 140*).
Digital drives only:
measuring system is a multiple of 16
measuring system is a multiple of 10
Digital drives only:
Digital drives only:
measuring system is a multiple of 16
measuring system is a multiple of 10
Digital drives only:
Zero monitoring on
zero mark passes (do not use for distance-coded reference marks).
If so, alarm 144* is triggered (also see description of alarm 144*).
Setpoint smoothing on
ManualsBase.com
Bit No.
4 3 2
No. of
Second meas. First meas.
encoder
system with system with
pulses (611D)
external zero external zero
1st meas.
mark (as from mark (as from
system (as
SW 3) SW 3)
from SW 3)
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Siemens AG 1992 All Rights Reserved
09.95
1 0
Zero Setpoint
monitoring smoothing
on on
1)
1)
6FC5197- AA50
SINUMERIK 840C (IA)