Rockwell Automation 8720MC Drives Integration Manual - Manual (Page 111)

Publication 8720MC-IN002A-EN-P — December 2002
Using the Human Interface Module (HIM) B-17
Creating or Changing a Link The 8720MC analog, digital and SCANport outputs can be linked to
different variables within the 8720 system. The analog, digital and
SCANport inputs have fixed links and cannot be modified. The
outputs have default links as discussed in the 8720MC High
Performance Drives Installation Manual (publication
8720MC-IN001x-EN-P). These default links were chosen to suit most
spindle or power servo applications. If the 8720MC application needs
a different set of outputs the output links my be changed. To change
an output parameter link you simply select the output parameter and
change its address value so that it points to the parameter that you
wish to link to that output. For example, if you wish to link parameter
380, “Bus_Voltage” to “Analog_Output_2”, the following procedure
should be followed:
1. From the “Choose Mode” prompt, use the increment up key or the
decrement down key to display “Program” and press the enter
key.
2. Press the increment up key or the decrement down key to display
the “I/O Interface” file. Pressing the enter key will select this file.
3. Press the increment up key or the decrement down key to display
the “Analog_Output” group. Pressing the enter key will display
this group parameters.
4. Use the increment up key or the decrement down key to scroll
through the parameter list until you come to “Anaout_Ch2_Selec”,
parameter 683. Pressing the enter key will select this parameter.
For a spindle application the value displayed will be the factory
default setting of “386”, the parameter number for
Mtr_Shaft_Power.
5. Press the select key and the character 6 will blink indicating that
the parameter number may be changed.
6. Press the decrement down key to decrease the parameter number
to 380 which is the parameter number for DC_Bus_Voltage.
7. Press the enter key to store the value.
8. Press escape when you have finished to exit the Set Links mode.
9. If you wish to retain the new output link after power is recycled
you must store it to non volatile flash memory. See “Storing Values
to Flash Memory” in this chapter.
10. The available output links are discussed in the 8720MC High
Performance Drives Installation Manual (publication
8720MC-IN001x-EN-P). If you attempt to link to a reserved
parameter the drive will display a numerical value of 12. The
output will be disabled.