Delta RMC151 - Manual (Page 138)

RMC70/150 and RMCTools User Manual
• Endpoint Behavior Truncate (+4)
• Note: You can choose other Options settings, but these are typical.
4. Send the Curve Start Advanced (88) command. As specified by the Transition command,
the curve axis will move to the correct position on the curve, which is determined by the
location of the master axis. As the master axis moves in either direction, the curve axis
will follow the curve profile. If the master reaches the endpoints (ax defined by the first
and last x-value of the curve), it will behave as specified by the Endpoint Behavior in
the Options command parameter.
Curve Capacity
In RAM
The RMC can hold up to 128 curves in it's random-access memory, which is lost when
power is removed from the RMC. This curve storage capacity varies by RMC. The size
required for any curve also depends on the download method, data format, and
interpolation type. The following table gives approximate storage capacities for the
commonly used simple cubic-interpolated curve. See the Curve Storage Capacity topic for
more details.
Max Length for a
Single Curve
Max Length for 16
Equal-length
Curves
Max Length for 128
Equal-length
Curves
RMC75E
RMC150E 262,137 points 39,559 points 5,381 points
RMC75P
RMC75S 8,187 points 1,229 points 161 points
In Non-Volatile Memory
The RMC can store curves in non-volatile Flash memory, which is retained even when
power is removed from the RMC. Only curves downloaded from the Curve Tool or added
using the Curve Add command with the Permanent life cycle option are saved to flash.
The size consumed by curves in Flash is 8 bytes per point for Constant and Linear types,
and 16 bytes per point for Cubic types, plus 1 byte per character in the curve name and
description, plus approximately 40 bytes of overhead.
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
Firmware and Hardware Requirements
Firmware and Hardware Requirements for Curves
Firmware 2.40 or newer.
3.38.0 or newer is required for the Curve Tool.
Hardware RMC150E: any version
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