LA Series Linear Servo Amplifier Technical Reference Manual
23
8.6.1
Serial Commands
The following commands are supported over the serial port communications interface.
A – Alarm Reset
This command allows viewing or resetting the alarm status. “A” with no parameter is used to read the alarm
status. “A 1” is used to reset the alarm status. Note: When an alarm is detected by the system, the drive is
immediately disabled
.
B – AutoBalance
This command is used to invoke the autobalance algorithm. During autobalance the display will indicate “-“
(middle bar).
E – Enable Status
This command is used to set/view the enable state of the drive. Note: When an alarm is detected by the
system, the drive is immediately disabled.
There are two modes of Enable operation, Software and Hardware. In Hardware mode, the drive enable is
controlled by the hardware Enable input on J1. A low on this input Enables the drive. A high or open on this input
disables the drive. The E command only allows viewing the enable state when in “hardware” enable mode.
Software enable mode is configured following a reset and BEFORE the hardware input is used. The drive will
come up disabled and the E command can be used to enable (E1) or disable (E0) the drive. If at any time during
software mode operation, the hardware input goes low, the drive reverts to hardware mode as described above
.
F – Factory Defaults
This command is used to set all the parameters to the factory defaults. Use the “S” command to save the
settings to NVM following the F command. By not automatically saving the defaults, the user can choose to go
back to the original settings (that were in the drive before the F command was used) by resetting the drive
.
H – Help
This command lists a summary of commands and their function.
L – List all parameters
This command lists all the user settable parameters and system readings to the display. The enable and alarm
status are also shown.
M – Mode
This command is used to view or set the commutation mode of the drive. M0 sets trapezoidal commutation, M1
sets Sinusoidal 2 phase input commutation. The “M command can only be used to view the commutation setting
if jumpers are installed.
R – Reset
This command causes the drive to perform a power on reset
.
S – Save Parameters
This command saves the user selectable parameters to NVM.
