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MOVE — Copy a Value

MOVE

Source

source

Dest

dest

Copies a source value (literal or tag) into a destination tag.

Operands​

NameType
sourceDINT | REAL
destDINT | REAL

How It Works​

When the rung is true, source is read and written to dest every scan. When the rung is false, MOVE does nothing and dest keeps its last value.

Example — Change a Timer Preset at Run Time​

Set a timer's preset based on which mode the machine is in.

XIC(ModeFast)MOVE(2000,CycleTimer.PRE);XIC(ModeSlow)MOVE(8000,CycleTimer.PRE)

While ModeFast is selected, CycleTimer.PRE is held at 2000. While ModeSlow is selected, it is held at 8000.

Example — Copy a Reading​

XIC(SampleNow)MOVE(TempSensor,LastSample)

Common Mistakes​

  • Moving a REAL into a DINT destination without expecting truncation — the fractional part is lost.