Rockwell Automation 8720MC Drives Integration Manual - Manual (Page 80)

Publication 8720MC-IN002A-EN-P — December 2002
4-6 SCANport Command Interface
Parameter Set Select bit 0, 1 and 2 - Setting these 3 binary bits
determines which parameter set is in use and /or which motor
winding is selected. The choices are:
000 = low 0, 001 = low1, 010 = low 2, 011 = low 3
100 = high 0, 101 = high1, 110 = high 2. 111 = high 3
Parameter Strobe - When the parameter strobe bit is set momentarily
the preselected parameter set number (bits 5, 6 and 7) will be selected
and the associated parameters will be enabled.
Orient Request - The SCANport orient request is identical to the
digital I/O orient request. When the Orient Request bit is set an orient
will be initiated as determined by the Auto Home Parameter,
parameter 582, and the orient parameters 150 motor marker offset, 153
orient angle, 154 orient options, 222 orient speed and 260 positioning
acc/dec rate. The orient will terminate when the orient complete
status bit is set and the orient request is removed.
Manual Reference Select - When the manual reference select bit is
set true in the SCANport command word the manual (jog) reference is
enabled. In this state the drive will follow the manual jog reference
provided on SCANport adapter input word 2. When initiating a jog the
manual reference request, bit 11 of the SCANport Logic Command
Word, does not need to be asserted. This will automatically occur
when the jog bit 02 of the Input Command Word is set. To terminate a
manual start or disable the jog reference state, with Manual Reference
Select not asserted, bit 00 of the Input Command Word “Stop Request”
must be set true. The auto command reference is then followed by the
drive.
SCANport Logic Status Outputs
Several of the logic output signals have already been defined in the
section, Default Digital I/O Descriptions. The following is an
explanation of those that have not already been described.
Drive Enabled - The drive is in the enabled state when the drive
enable digital input is true and there are no shut down faults. Drive
enabled means the power IGBT’s are switching and the drive is
capable supplying motor torque.
Auto Reference Enabled - Parameter 529 is an event link which
indicates that there are no drive faults, the drive is enabled and it is in
auto mode and it is capable of following the auto reference. This
event has a default link to both the digital interface and the SCANport
Logic Status Word.