| author | laurent |
| Wed, 18 May 2011 13:20:24 +0200 | |
| changeset 300 | 092a6fa4926f |
| parent 276 | 1679f514f38a |
| permissions | -rwxr-xr-x |
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Updating origin and license info of library fuctions.
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(* Following taken directly from the IEC 61131.3 draft standard *) |
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(* |
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* An IEC 61131-3 IL and ST compiler. |
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* |
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* Based on the |
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* FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10) |
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* |
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*) |
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c6c2a3d487ac
Adding inclusion of function blocks defined in AnnexF into library blocks
lbessard
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FUNCTION_BLOCK HYSTERESIS |
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(* Boolean hysteresis on difference *) |
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(* of REAL inputs, XIN1 - XIN2 *) |
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VAR_INPUT XIN1, XIN2, EPS : REAL; END_VAR |
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VAR_OUTPUT Q : BOOL := 0; END_VAR |
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IF Q THEN IF XIN1 < (XIN2 - EPS) THEN Q := 0; END_IF ; |
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ELSIF XIN1 > (XIN2 + EPS) THEN Q := 1 ; |
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END_IF ; |
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END_FUNCTION_BLOCK |
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