Rockwell Automation 1746-HSTP1 Stepper Controller Module/ User Manual - Manual (Page 32)

1 Publication 999-121 - December 1999
Chapter
4
Module Operation
Chapter Objectives The information in this chapter will give you a basic understanding of
frequency outputs and pulse train configuration which must be
considered in the application of the Module.
Module Overview The Module is an SLC family compatible Module. It is designed for use
with an SLC 500™, SLC 5/01™, SLC 5/02™, SLC 5/03™, SLC 5/04™,or
SLC 5/05™ Processor. The motion profile execution is independent of
the scan time of the SLC Processor once it is initiated. Blended motion
allows for complicated move profiles consisting of two to 16
segments. The blended move profiles are stored in the Module's
internal memory as a series of absolute moves. Since the sequence of
moves is stored in the internal memory of the Module, it can be
executed more than once. Other move or homing operations may be
performed between blended move profiles.
The Module is capable of controlling absolute position over a range of
±8,388,607 pulses with a programmable velocity of 1 to 250,000 pulses
per second and acceleration/deceleration rates between 1 and 2,000
pulses per millisecond per second. The Module is able to perform an
origin search (also called homing) and to automatically reset the
absolute position to zero upon detection of an encoder marker when
an origin search function is requested by the SLC Processor.
Operating Modes The three operating modes of the Stepper Controller are:
configuration mode, command mode, and diagnostic mode.
Configuration
The Configuration mode permits the selection of the proper setup
configuration to match the Stepper Translator without setting any
switches and without special software. Until the configuration mode
has been properly set, the Stepper Controller will not operate.
Enabling loopback diagnostics is done using the configuration mode.
In the diagnostic mode, a check is made for noise in the
interconnecting wiring, as well as a check of the program itself.