Rockwell Automation 1398-PDM-xxx IQ Master Version 3.2.4 for IA-2000 and IQ-5000 Positioning Drive Modules, IQ-55 - Manual (Page 381)

Optional Home Programs • Home to a Limit Switch 359
Publication 1398-PM601A-EN-P — October 2000
APPENDIXES
Optional Home Programs
Home to a Limit Switch
It is possible to home to the edge of a limit switch. The standard home program can be used by wiring
the reverse limit switch to the home switch, and making the Home Switch active open. The alternative
home program,
home_rls.qps , may be used in situations where the application requires use of hard-
ware limit switches but it is not desirable to install an additional home switch. This program uses the
reverse hardware limit switch to establish home position. The hardware limit switches functions nor-
mally once the program has completed.
Home without Limit Switches
Another alternative home program, home_nls.qps , provides the same functions as the standard
home program but does not support changing directions if a limit switch is hit.
Home to Encoder Index only
Another alternative home program, home_inx.qps , will home an axis to the motor Encoder Index. A
direct drive rotary table is an example where this program could be used. This program will seek an
index mark in the direction set by the Home Velocity parameter. If the Home Velocity is less than
10,000 pulses/second, the Home Velocity will be used, otherwise the speed will be 10,000 pulses/sec-
ond.
NOTE: The listings for these programs may be viewed or optionally installed to disk. They are stored
on the IQ Master disk in the SYSPGM/OPTSYS directory.