text: <s>[INST] SSV to manipulate Conversion Constant Axis properties I have a single Ultra 3000 drive moving a piston pump through a ball screw programmed with RSLogix 5000 and PV Plus HMI. I have the system scaled in milliliters. At different times I want to install a different volume size piston pump while the stroke length remains the same. I need to be able to write a new conversion constant to the Axis properties. I have been told that an SSV can do this. But I can not even locate the conversion constant attribute in the Axis tag. Has any one ever done something like this and can you offer some suggestions? [/INST] After you've inserted the SSV instruction in your application program, fill in its fields as follows: Class = AXIS Instance = Axis name from motion group. Attribute = ConversionConstant Source = REAL tag Also take a look to Motion Modules User Manual at page 298 for other infos... and take a look to the attached screenshot... Hope this helps…- fuzzy logic \\n </s>