Delta MMC120 User Manual

Page 81

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81

Set Integral Drive to Null Drive Command

Character: i

Decimal: 105

Hexadecimal: 069

Command Value: Unused

This command sets the Integral Drive to the

Null Drive

value. This can be used to

unwind the integrator. In most cases this is more desirable than using the

Set Integral

Drive

command because this accounts for the valve being non-nulled. You can also use

the

Save Integral Drive

and

Restore Integral Drive

commands to unwind the integrator.

Relative Move Command

Character: J or j

Decimal: 74 or 106

Hexadecimal: 04A or 06A

Command Value: Change in Position, in position units.

This command changes the

COMMAND POSITION

by the amount specified in the

COMMAND VALUE

field. For example, suppose that one position unit is equal to

0.001” and the current position is 5000 (5.0”). If a J command is given with a

COMMAND VALUE

of –1000, then the axis will move to 4000 (4.0”).

Disable Drive Output Command

Character: K

Decimal: 75

Hexadecimal: 04B

Command Value: Unused

This command immediately sets the drive output on the module to the current null value.

This is equivalent to a Hard Stop. The output will remain at null in open loop control

until a new command is issued.
When this command is issued from the monitor program, it is issued to all axes

simultaneously. When issued from the controller, only the axis receiving this command

is affected.
If an event sequence is in progress when this command is issued, the event sequence will

be stopped. Compare this command with the

Halt

and

Quit Events

commands.

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