8 GCS Commands
190
Version: 1.2.1
MS249E
C-863.12 Mercury Controller
Troubleshooting:
Illegal axis identifier
Notes:
The control value which is returned by SMO? can be the
result of the servo algorithm and other corrections, or it
can be the value set by an SMO command (p. 188) in open-
loop operation. See the block diagram (p. 11) for further
information.
The control value ranges from -32766 to 32766
(dimensionless) and controls the PWM converter for the
axis. The sign of the value determines the direction of
motion.
SPA (Set Volatile Memory Parameters)
Description:
Sets a parameter of the specified element in the volatile
memory (RAM) to a specific value. Parameter changes are
lost when the controller is switched off or rebooted.
Format:
SPA {<ItemID> <PamID> <PamValue>}
Arguments:
<ItemID> is the element for which a parameter is changed
in volatile memory. See below for details.
<PamID> is the parameter ID, can be written in
hexadecimal or decimal format. See below for details.
<PamValue> is the value to which the specified parameter
of the specified element is set.
Response:
None
Parameter changes are also lost when the parameters are
reset to their default values with RPA (p. 184).
Note that this command is for setting hardware-specific
parameters. Wrong values may lead to improper
operation or damage of your hardware!
Related commands:
HPA? (p. 159) returns a list of the available parameters.
SEP (p. 186) writes parameter settings directly into
nonvolatile memory (without changing the settings in
volatile memory).