Emerson SI-Universal User Manual page 43

6.3.2 Software mode - Incremental signals (AB, FD, or FR)
In software mode, the encoder simulation output is derived via software from the selected source
with a minimum delay of 250 µs which may be extended with Encoder Simulation Sample Period
(1x.087). For incremental output signals, the resolution of the output can be defined by either
selecting the required output lines per revolution or by an output ratio.
Lines per revolution
The output resolution of the encoder simulation output is defined by Encoder Simulation Output
Lines Per Revolution (1x.092).
AB quadrature output signals, software mode setup – Lines per revolution
Encoder Simulation
Source (1x.085)
Encoder Simulation
Mode (1x.088)
Encoder Simulation
Output Lines Per
Revolution (1x.092)
Encoder Simulation
Output Mode (1x.098)
Frequency and Direction or Forward and Reverse output signals, software mode setup –
Lines per revolution
Encoder Simulation
Source (1x.085)
Encoder Simulation
Mode (1x.088)
Encoder Simulation
Output Lines Per
Revolution (1x.092)
Encoder Simulation
Output Mode (1x.098)
Ratio
In ratio mode the resolution of the input source is based on a 16 bit position feedback device (i.e.
equivalent to an AB quadrature encoder with a resolution of 16384 lines per revolution). The output
resolution of the encoder simulation output is defined by the ratio of Encoder Simulation Numerator
(1x.093) and Encoder Simulation Denominator (1x.094).
SI-Universal Encoder User Guide
Issue: 2
Set to the parameter number of the position source
Pr 1x.029 to use the P1 position interface as the source.
Pr 03.029 to select the P1 interface on the drive as the source.
This parameter can be set to any other valid position reference generated
by the drive or an option module.
Set to a value of Lines Per Rev (1)
Set to the required output lines per revolution. The maximum output lines
per revolution are 16384.
AB/Gray (0) for a AB quadrature output signals
Set to the parameter number of the position source Pr 1x.029 to use the
P1 position interface as the source.
Pr 2x.029 to use the P2 position interface as the source.
This parameter can be set to any other valid position reference generated
by the drive or an option module.
Set to a value of Lines Per Rev (1)
Set to the required equivalent output lines per revolution.
AB/Grey (0) for AB quadrature output signals
FD/Binary (1) for Frequency and Direction output signals
FR/Binary (2) for Forward and Reverse output signals
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