Local Reference Fine Position; Local Reference Disable; Ignore Local Reference Turns - Emerson Mentor MP Advanced User's Manual

Parameter Keypad and
structure
13.22

Local reference fine position

Bit SP
Coding
Range 0 to 65,535
Default 0
Update rate 4 ms read
13.23

Local reference disable

Bit SP
Coding
1
Default 0
Update rate 4 ms read
The local reference can be used to control the position of the motor shaft. If the local reference disable parameter is one the previously written value
is used. This allows all three parts of the local reference position to be changed without data skew problems.
13.24

Ignore local reference turns

Bit SP
Coding
1
Default 0
Update rate 4 ms read
The local reference consists of a turns, a position and a fine position value. When Pr 13.24 is zero the reference is a 48bit position made from these
three values.
If Pr 13.24 is set to one the local reference is a 32bit position made from the position and fine position values. The position delta, used as the input to
the position controller, is calculated correctly even when the turns are ignored as the 32bit position is treated as a roll-over/roll-under counter. This
feature can be used, for example, with the local reference when only the position (and not the turns or fine position) is available. This feature is not
available when absolute mode is selected (Pr 13.11 = 1).
Mentor MP Advanced User Guide
Issue Number: 4
format
Parameter description
FI DE Txt VM DP ND
FI DE Txt VM DP ND
FI DE Txt VM DP ND
www.onxcontrol.com
Advanced parameter
descriptions
RA NC NV PT US RW BU
1 1
RA NC NV PT US RW BU
1 1
RA NC NV PT US RW BU
1 1
Serial comms
Performance
protocol
PS
1
PS
PS
Menu 13
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