4.8
Homing
4.8.1
Drive-controlled
If all ASCII parameters are set in such a way that the reference run (homing) works per-
fectly without sercos
®
, for example via the startup software (note incremental scaling via
sercos
®
), the drive-controlled reference run can be started using the command IDN148.
IDN used
Meaning
ASCII Parameter
IDN 41
Homing speed
VREF
IDN 42
Homing acceleration
ACCR, DECR
IDN 47
Position setpoint
IDN 52
Reference distance 1 (motor feedback)
ROFFS
IDN 54
Reference distance 2 (external feedback)
ROFFS
IDN 147
Homing parameter
NREF
IDN 148
Command: Amplifier-Controlled Homing
MH
IDN 300 (x=0...3) Configuration DIGITAL-In 1...4
INxMODE
IDN 403
Position Feedback Value Status
IDNP 3004
Position Switch Configuration
SWCNFG
IDNP 3027
Homing mode according to ASCII object
reference
NREF
IDNP 3067
REFMODE
IDNP 3068
DREF
Drive-controlled referencing
Sequence
IDN
Meaning
Master sets and releases
IDN 148
Drive-controlled referencing
The cyclical target values are ignored as long
as IDN 148 is active.
Drive deletes the "Position Feedback Value
Status" bit
IDN 403
Position Feedback Value
Status
The drive switches to internal position control
The drive accelerates
IDN 42
Homing acceleration
To final speed for Homing
IDN 41
Homing speed
Further settings for Homing
(IDN 147)
Homing Parameters
Homing mode (see ASCII object reference)
IDNP 3027
REFMODE
IDNP 3067 Source of the zero impulse
The drive brakes behind the position encoder ref.
mark and stops at the ref. point
IDN 42
Reference run acceleration
The target position values are based on the
ref. mark.
IDN 47
Position setpoint
If the drive is at standstill and the actual positi-
on values are based on the ref point.
IDN 403
Position Feedback Value
Status
Homing is completed (bit = 0)
IDN 148
Drive-controlled referencing
ROFFS
(IDN 52)
Reference distance 1 (motor
feedback)
ROFFS
(IDN 54)
Reference distance 2 (exter-
nal feedback)
Once homing has been successfully completed, the drive follows the target values.
Should homing be interrupted, the actual position values are not based on the ref mark,
and the bit for the status of actual position values remains at a low level.
sercos
®
for S300/S700
111
Kollmorgen
04/2016
Appendix