2 ● Overview DMC-1400 Series Command Reference
Arguments
As arguments, some commands require actual values to be specified following the instruction. These
commands are followed by lower case n where n is replaced by an actual value.
A “?” returns the specified value for that axis. For example, AC? returns the acceleration of the axis.
Other commands require action on the axis to be specified. These commands do not have an operand
action for the axis or are specified by writing the command only, such as BG or ST. When
downloading commands to the DMC-141X, do not insert a space prior to any command. For example,
ST; AM is invalid because there is a space after the semicolon.
The DMC-1425 is the only controller in the DMC-1400 Econo Series that supports two axes. For this
controller, arguments are specified for the X and Y axis.
Operand Usage
Most commands have a corresponding operand that can be used for interrogation. The Operand Usage
description provides proper syntax and the value returned by the operand. Operands must be used
inside of valid DMC expressions. For example, to display the value of an operand, the user could use
the command:
MG ‘operand’
All of the command operands begin with the underscore character (_). For example, the value of the
current position on the motor can be assigned to the variable ‘V’ with the command:
V=_TP
Usage Description
The Usage description specifies the restrictions on proper command usage. The following provides an
explanation of the command information provided:
"While Moving" states whether or not the command is valid while the controller is performing a
previously defined motion.
"In a program" states whether the command may be used as part of a user-defined program.
"Command Line" states whether the command may be used other than in a user-defined program.
"Can be Interrogated" states whether or not the command can be interrogated by using the “?” as a
command argument.
"Used as an Operand" states whether the command has an associated operand.
Default Description
In the command description, the DEFAULT section provides the default values for controller setup
parameters. These parameters can be changed and the new values can be saved in the controller's non-
volatile memory by using the command, BN. If the setup parameters are not saved in non-volatile
memory, the default values will automatically reset when the system is reset. A reset occurs when the
power is turned off and on, when the reset button is pushed, or the command, RS, is given.
When a master reset occurs, the controller will always reset all setup parameters to their default values
and the non-volatile memory is cleared to the factory state. A master reset is executed by the
command, <ctrl R> <ctrl S> <Return> OR by powering up or resetting the controller with the MRST
jumper or dip switch on.
For example, the command KD is used to set the Derivative Constant for each axis. The default value
for the derivative constant is 64. If this parameter is not set by using the command KD, the controller
will automatically set this value to 64 for each axis. If the Derivative Constant is changed but not
saved in non-volatile memory, the default value of 64 will be used if the controller is reset or upon