590 Series DC Digital Drive Programming
D-5
To maintain compatibility, the new firmware emulates the functionality and behavior of links in earlier firmware versions by defaulting the LEGACY
MODE parameter in function block CONFIGURE DRIVE to 0x0001 (non-zero).
Figure 1 Operation of links (LEGACY MODE = non-zero : firmware Versions 4.x and 9.x)
Figure 2 Operation of links (LEGACY MODE = zero : firmware Version 9.x)
The operation of a link is determined by the number of decimal places of each parameter. Previous firmware versions ignored the decimal place when
linking two parameters. For example, linking Analog Input 2 to the Jog Ramp rate gave a Ramp Rate of 526.1s for an input value of 52.61%. Compare
the Figure above.
An additional enhancement is that all values are now held to over 4 decimal places of precision. This is also true of values transferred via links. In the
above example, although the Jog Ramp Rate is shown as 59.7s, internally the value will match that of the output of Analog Input 2, to over 4 decimal
places.
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