Delta RMC151 - Manual (Page 159)

3 Controller Features
This error will occur if there are already 128 curves in the curve store. You must delete one or
more curves before adding more curves.
3.6.7.8. Curve Storage Capacity
Curves are stored in the Curve Store. The Curve Store can hold a maximum of 128 curves.
The non-volatile storage capacity for curves is less. The curve storage capacity varies by
controller, as shown below. When a curve is added, the Event Log will display the size of the
curve in bytes.
Controller Curve Store Capacity
RMC150E 8 MB
RMC75E 8 MB
RMC75S 256 KB
RMC75P 256 KB
Non-Volatile Memory
The curves in the Curve Store will be lost when power is removed from the RMC.
However, curves can be saved to non-volatile Flash memory if they were downloaded
from the Curve Tool or added using the Curve Add command with the Permanent life
cycle option.
The size consumed by curves in Flash is as follows, where N is the number of points in
the curve:
Curve Type Size
Constant,
Linear
8xN + name length + description length + 40 bytes
Cubic 16xN + name length + description length + 40 bytes
The curves share the same Flash storage as the entire RMC project, including axis
parameters, plot templates, variable table defaults, user programs, and curves. The total
Flash size is as follows:
Controller Flash Size
RMC150E 1024 KB
RMC75E (1.1G and newer) 1024 KB
RMC75E (1.1F and older)
256 KB
RMC75P 96 KB
RMC75S 96 KB
Curve Store Capacity Quick Charts
The following charts show the maximum allowable sizes for equal-length simple cubic
curves in the various RMC controllers with various numbers of curves:
Simple Cubic Curves,
Max Length for: RMC75E
RMC150E RMC75P
RMC75S
Single Curve 262,137 points 8,187 points
8 Equal-length Curves 72,306 points 2,253 points
16 Equal-length Curves 39,559 points 1,229 points
50 Equal-length Curves 13,520 points 418 points
deltamotion.com 139