Delta MMC120 User Manual

Page 79

Hexadecimal: 044

Command Value: New DECELERATION value (units depend on Accel/Decel

Mode in the

MODE word

)

This command sets the

DECELERATION

parameter to the value in the

COMMAND

VALUE

field. The change in deceleration takes place immediately if a move is in

progress.

Start Events Command

Character: E

Decimal: 69

Hexadecimal: 045

Command Value: Event Step to Start Execution

This command starts an event step sequence at the step specified in the

COMMAND

VALUE

field. If the axis already was in the middle of an event sequence, that sequence

will end and the new event sequence will begin.

Set Feed Forward Command

Character: F

Decimal: 70

Hexadecimal: 046

Command Value: Unused

The 'F' command is used to automatically set the feed forward values. After a move is

made where the axis is allowed to reach constant velocity and the overdrive bit is not set,

an 'F' command will set the

FEED FORWARD

for the direction last moved. This

command is quick and easy, and it allows the system to adjust for changing system

dynamics. This also makes setup easier.

NOTE: The 'F' command should be used only after the axis is moving smoothly. If the

axis oscillates or doesn’t reach steady state during the move, this command

will give erroneous results.

If the

NULL DRIVE

is not adjusted correctly, the value for the

Feed Forward will be incorrect.

Go Command

Character: G or g

Decimal: 71 or 103