4MELFA-BASIC IV
Detailed explanation of command words 4-236
Plt (Pallet)
[Function]
Calculates the position of grid in the pallet.
[Format]
[Terminology]
<Pallet No.> Select a pallet No. between 1 and 8 that has already been defined with a Def Plt command.
Specify this argument using a constant or a variable.
<Grid No.> The position number to calculate in the palette. Specify this argument using a constant
or a variable.
[Reference Program]
10 Def Plt 1,P1,P2,P3,P4,4,3,1 ' The definition of the four-point pallet. (P1,P2,P3,P4)
11 '
12 M1=1 ' Initialize the counter M1.
13 *LOOP
14 Mov PICK, 50 ' Moves 50 mm above the work unload position.
15 Ovrd 50
16 Mvs PICK
17 HClose 1 ' Close the hand.
18 Dly 0.5 ' Wait for the hand to close securely (0.5 sec.)
19 Ovrd 100
20 Mvs,50 ' Moves 50 mm above the current position.
21 PLACE = Plt 1, M1 ' Calculates the M1th position
22 Mov PLACE, 50 ' Moves 50 mm above the pallet top mount position.
23 Ovrd 50
24 Mvs PLACE
25 HOpen 1 ' Open the hand.
26 Dly 0.5
27 Ovrd 100
28 Mvs,50 ' Moves 50 mm above the current position.
29 M1=M1+1 ' Add the counter.
30 If M1 <=12 Then *LOOP ' If the counter is within the limits, repeats from *LOOP.
31 Mov PICK,50
32 End
[Explanation]
(1) The position of grid of a pallet defined by the Def Plt statement is operated.
(2) The pallet Nos. are from 1 to 8, and up to 8 can be defined at once.
(3) Note that the position of the grid may vary because of the designated direction in the pallet definition.
(4) If a grid No. is designated that exceeds the largest grid No. defined in the pallet definition statement, an
error will occur during execution.
(5) When using the pallet grid point as the target position of the movement command, an error will occur if
the point is not enclosed in parentheses as shown above. Refer to Page 98, "4.1.2 Pallet operation" for
detail.
[Related instructions]
Def Plt (Define pallet)
Plt[]<Pallet No.> , <Grid No.>
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