- General Electric Computer Accessories User Manual

GEH-6385 Reference and Troubleshooting, 2300 V Drives Chapter 3 Paramters/Functions •
••
• 3-39
Each 32-bit element in the LAN Signal Map is assigned a data type. The following
data types are used.
• Single precision floating point, IEEE 754 format (23-bit mantissa, 8-bit
exponent, 1-bit sign).
• Two’s complement integer.
• Individual 1-bit Boolean signals.
LAN References
The following table specifies the LAN Signal Map reference signals.
Page &
Element
Signal Data
Type
Description
11
Boolea
n bits
Boolean requests. See table below for
definition of request bits.
12
Auto speed ref,
lan
Floating
point
Auto speed reference that can be used
in the Speed Reference Generation
function. RPM
1 3 Spd ref offset,
lan
Floating
point
Speed reference offset that can be
used prior to the Speed/Torque
Regulator function. RPM
1 4 Torque ref, lan
Floating
point
Torque reference that can be used in
the Speed/Torque Regulator function.
Newton-meters or Pound-feet
1 5 Unused
1 6 Unused
1 7 GP lan ref 1 Floating
point
General purpose reference that can be
used by a number of functions.
1 8 GP lan ref 2 Floating
point
General purpose reference that can be
used by a number of functions.
21
Torque fdfwd,
lan
Floating
point
Torque feed forward reference that can
be used in the Speed/Torque
Regulator function. Newton-meters or
Pound-feet
2 2 Flux reference,
lan
Floating
point
Flux scale that can be used in the
Motor Control Interface function.
2 3 Droop comp
ref, lan
Floating
point
Droop compensation reference that
can be used in the Droop function. Per
unit torque
2 4 Unused
2 5 Unused
2 6 Unused
2 7 GP lan ref 3 Floating
point
General purpose reference that can be
used by a number of functions.
2 8 GP lan ref 4 Floating
point
General purpose reference that can be
used by a number of functions.