Rockwell Automation 1746-HSTP1 Stepper Controller Module/ User Manual User Manual

Page 39

Publication 999-121 - December 1999

5-4 Configuration and Programming

upon by the Module until a valid configuration is received. The
configuration file has the following format.

Output word 0: defines the user's configuration; that is, what types of
inputs are present.

bit 0

when a CW limit switch is used

bit 1

set when a CCW limit switch is used

bit 2

set when the pulse train enable/disable input is used

bit 3

set when an external interrupt is used

bit 4

set when a home limit switch input is used

bit 5

set when a home limit proximity limit switch is used

bits 6 and 7

not used

bit 8

set when a quadrature encoder is used

bit 9

set when diagnostics feedback is used

OUTPUT
WORD 0

OUTPUT
WORD 1

OUTPUT
WORD 2

OUTPUT
WORD 3

IMPORTANT

To guard against a configuration error, certain bits in
output word 0 must be set. Either bit 0 or bit 1 (or
both) must be set; and either bit 4 or bit 4 and bit 5
must be set. This is true whether or not the indicated
limit switch is present in the system. Also, there are
certain output combinations that obviously are not
valid (e.g., setting both bit 8 and bit 9). Using an
invalid output combination results in a configuration
error being generated.