Machine data
2.2 General machine data
Parameter Manual
74
Operating Instructions, 08/2013, 6FC5397-8EP40-0BA0
Description:
This machine data is used to adapt the path feed override switch to the
interface coding of the PLC interface.
1: The 5 low-order bits of the NC/PLC interface signal DB380x DBX0 (Feed
override A-H) are interpreted as a Gray code. The value which is read corre-
sponds to a switch setting. It is used as an index for selecting the correct
override factor from the table of MD12030 $MN_OVR_FACTOR_FEEDRATE [n].
0: The feed override byte of the PLC interface is interpreted as a binary
representation of the override value in percent (limit 200 percent).
Related to:
NC/PLC interface signal DB380x DBX0 (Feed override A-H)
MD12030 $MN_OVR_FACTOR_FEEDRATE [n]
(Evaluation of the path feed override switch)
Description: Evaluation of the feedrate override switch with gray-coded interface.
Special function of the 31st value for the velocity control:
The setting of the 31st override value defines the dynamic reserves which
take the velocity control to be an excessive increase in the path feed. The
setting should correspond to the highest override factor actually used.
The function of the 31st value is thus identical to the effect of MD12100
$MN_OVR_FACTOR_LIMIT_BIN when using the binary-coded interface.
Not relevant with:
MD12020 $MN_OVR_FEED_IS_GRAY_CODE = 0
Related to:
NC/PLC interface signal DB380x DBX0 (Feed override A-H)
12020 OVR_FEED_IS_GRAY_CODE EXP, N10 V1,Z1
- Path feedrate override switch Gray-coded BOOLEAN PowerOn
-
- - TRUE 0 - 1/1
12030 OVR_FACTOR_FEEDRATE EXP, N10 V1,B1,Z1
- Evaluation of path feedrate override switch DOUBLE PowerOn
-
- 31 0.00, 0.01, 0.02, 0.04,
0.06, 0.08, 0.10...
0.00 2.00 1/1
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