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Programming S900–II Level 1

Version 2.2 |–>

V – Specific programming

01T01527_2

25.5.00

V – 1. 2. Managing a belt’s “step by step” movement

An output actuates the belt indexing : output at 0 –> the belt is stopped,

output at 1 –> the belt is indexed.

The release area on the belt is controlled by cell “1”.

Cell “2”, whose position is marked in figure 1, defines the step between the parts.

cell 1 cell 2

OUT 20

movement direction

cell 1

IN 32

= 0 if part

cell 2

IN 33

= 1 if part

Figure 3 : Conveyor belt (overhead view)

The part must be released in front of the cell so that a part is not released on top of another one.

Solution using a PLC :

 Define the PLC in step 0 of the main PRG (example : PLC 02).

 Start the belt movement in the main PRG (after part release).

(Example : SET OUT 20).

 Write in the PLC 02 :

IF /IN 33 cell 2

SET BIT 80 part removed from cell 2

IF BIT 80 part removed from cell 2

IF IN 32 cell 1

IF IN 33 cell 2

RST OUT 20 index belt output

Solution using an SPP :

 Call–up the SPP in the main PRG (after part release).

(Example : SP 82 L0).

 Write in the SPP :

Step 0 OUT 20 index belt output

IN/33 cell 2

Step 1 OUT 20 index belt output

IN 33 cell 2

IN 32 cell 1

Step 2 END

1 2 ... 54 55 56 57 58 59 60 61 62 63 64 ... 81 82

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Conair S900II System Technical Information Seite 59