NXC-VAI4 Analog Voltage Control Card

 

NXC-VAI4 Send_Commands (Cont.)

 

 

Command

Description

 

 

GAS

When these variables have been set, and a GL command is in progress, the

Sets the slowdown distance

speed output on Output <x> will be reduced to that specified when the position

as read on Output <x+4> is within the distance specified away from the target

and slowdown speed.

position.

 

 

Syntax:

 

SEND_COMMAND <DEV>,'G<OUTPUT>A<DISTANCE>S<SPEED>'

 

Variables:

 

OUTPUT: Any Output '1', '2', '3', or '4'

 

DISTANCE: 0-127

 

SPEED: 0-127

 

Example:

 

SEND_COMMAND <DEV>,'G1A127S127'

 

Sets Output 1 slowdown distance to 127 (max) at full speed.

 

 

GD

The level of the specified input or output will only be reported when a change

Sets the maximum allowable

greater than this deviation occurs.

Deviation 0 is most accurate, but can have some oscillation, so the default is 2,

deviation of final servo

position when executing the

i.e. the position as read at corresponding input I/O <x+4> can be within +/-2

GL command.

from the specified position.

 

Syntax:

 

SEND_COMMAND <DEV>,'G<I/O>D<DEVIATION>'

 

Variables:

 

I/O: Any input or output ('1', '2', '3', '4', '5', '6', '7'. '8')

 

DEVIATION: Number between 0 and 127 (default = 2)

 

Example:

 

SEND_COMMAND <DEV>,'G1D10'

 

Sets I/O 1 servo output to 10.

 

 

GL

The range of the position is 0-255 (if AD MODE is set to '8'), or 0-65535

This command puts the card

(if AD MODE is set to '10'). See AD MODE earlier in this section for details.

 

in servo (positional) control

Position 0 is the low end of the potentiometer (lowest voltage); position 255

mode.

(or 65535) is the high end of the potentiometer (highest voltage) with 128 (or

 

32768) as the middle of the range.

 

Syntax:

 

SEND_COMMAND <DEV>,'G<OUTPUT>L<POSITION>'

 

Variables:

 

I/O: Any Output ('1', '2, '3', 4')

 

POSITION: Number between 0-255 or 0-65535 (depends on AD MODE)

 

Example (Assuming the current position is 0):

 

SEND_COMMAND <DEV>,'G1L255'

 

Sets Output 1 to "CURRENT OUTPUT 1 SPEED" (positive) and waits until

 

Input 1 reads within "OUTPUT 1 MAXIMUM DEVIATION" of 255 and then

 

resets the output to zero speed. The speed output may have a more complex

 

profile than as set by the "GAS" command.

 

 

NetLinx Cardframe, Control Cards, and NetModules

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AMX NXM Series manual Gas

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