Rockwell Automation GMLC Reference Manual - Manual (Page 741)

Publication GMLC-5.2 - November 1999
704 Using the RIO Adapter Option
Interlocking the block transfers with the program running bit stops the
block transfers when the motion controller’s program is not running. This
significantly improves the downloading of GML Commander diagrams,
cam tables, etc., as well as the operation of the motion controllers built-in
setup menus. See Using the Dedicated Discrete Outputs in this chapter for
more information on the program running bit.
The data, that is to be sent to the motion controller, must be stored in a
data file in the PLC—N13 in the example above—before the BTW is
executed. See Constructing the PLC Data File in this chapter. The type of
data file, used to store the values to be sent by the BTW, depends on the
Numeric Format specified for the transfer, as shown in the table below.
* Floating-point values must be copied from a floating bit file to an
integer file in the PLC before being block transferred.
!
ATTENTION: Be sure to specify the correct BTW file type
for the numeric format of the transferred values.
RIO Adapter Block Transfer Write Data File Types
Numeric Format PLC File Type
32-bit Integer Integer (N)
16-bit Integer Integer (N)
32-bit Signed BCD BCD (D)
32-bit Floating-Point Integer* (N)
Word-Swapped 32-bit Integer Integer (N)
Word-Swapped 32-bit Signed BCD BCD (D)
Word-Swapped32-bit Floating-Point Integer* (N)