Emerson FM-3 Manual de instalación descargar pdf (Pagina 102)

FM-3 Programming Module Reference Manual

Dwell For Time 1.000 ‘seconds

Loop

Wait For

This program flow instruction is used to halt program execution until an expression becomes

true. Once the expression becomes true the program continues on with the next line of code.

Logical tests (AND, OR, NOT) can be used in the Wait For instruction. However, “analog”

variable comparisons (MasterPosn>1000.000) cannot be used. Only sources

(DriveInput.1=ON, AtVel, etc.) can be used in a Wait For instruction.

Examples:

Wait For (ModuleInput.1=ON AND ModuleInput.2=OFF)

Index.0.Initiate

Wait For Index.AnyCommandComplete

If (ModuleInput.2=ON) Then ‘Jog+ when ModuleInput.2=ON

Jog.0.PlusInitiate ‘Vel=20in/s

Wait For ModuleInput.2=OFF ‘Stop when the input goes OFF

Jog.Stop ‘Decelerate to a stop

Endif

If (ModuleInput.3=ON) Then ‘Jog- when ModuleInput.3=ON

Jog.0.MinusInitiate ‘Vel=20in/s

Wait For ModuleInput.3=OFF ‘Stop when the input goes OFF

Jog.Stop ‘Decelerate to a stop

Endif

Wait For Time

This program instruction is used to halt program execution for a specified period of time. This

instruction is not a motion instruction and can be used while a motion instruction is executing.

Units: Seconds, Resolution: 0.001 seconds

A comment is automatically inserted after the “Wait For Time” instruction which notes that the

time is in units of seconds. The comment starts with the apostrophe ‘ character.

Examples:

Wait For Time 5.000 ‘seconds

Do While (TRUE) ‘Repeat until the program is halted

Index.1.Initiate ‘Incremental,Dist=25.250in,Vel=10.0in/s

Wait For AtVel

‘Turn Output 1 ON for 1 second, after the

‘index reaches its’ target velocity

DriveOutput.1=ON

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Emerson FM-3 Manual de instalación Pagina 102