author | mario |
Sat, 17 Nov 2007 09:20:44 +0100 | |
changeset 95 | b119b1db0a7a |
parent 0 | fb772792efd1 |
child 274 | 8d36d1f81170 |
permissions | -rwxr-xr-x |
0
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Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
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(* |
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* (c) 26 Feb 2001 David Campbell |
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* |
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* Offered to the public under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version 2 of the |
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* License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, but |
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* WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
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* Public License for more details. |
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* |
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* This code is made available on the understanding that it will not be |
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* used in safety-critical situations without a full and competent review. |
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*) |
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|
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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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|
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|
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(* |
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* This is part of the library conatining the functions |
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* and function blocks defined in the standard. |
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* |
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* SR and RS function blocks |
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* ------------------------- |
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*) |
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|
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FUNCTION_BLOCK SR |
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VAR_INPUT |
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S1 : BOOL; |
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R : BOOL; |
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END_VAR |
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VAR_OUTPUT |
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Q1 : BOOL; |
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END_VAR |
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VAR |
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Q_INTERNAL : BOOL; |
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END_VAR |
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Q_INTERNAL := S1 OR ( Q_INTERNAL AND (NOT R)); |
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Q1 := Q_INTERNAL; |
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END_FUNCTION_BLOCK |
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|
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FUNCTION_BLOCK RS |
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VAR_INPUT |
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S : BOOL; |
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R1 : BOOL; |
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END_VAR |
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VAR_OUTPUT |
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Q1 : BOOL; |
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END_VAR |
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VAR |
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Q_INTERNAL : BOOL; |
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END_VAR |
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Q_INTERNAL := (NOT R1) AND (S OR Q_INTERNAL); |
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Q1 := Q_INTERNAL; |
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END_FUNCTION_BLOCK |