1 (* |
1 (* |
2 * (c) 2005 Mario de Sousa |
2 * matiec - a compiler for the programming languages defined in IEC 61131-3 |
3 * |
3 * |
4 * Offered to the public under the terms of the GNU General Public License |
4 * Copyright (C) 2005, 2011 Mario de Sousa (msousa@fe.up.pt) |
5 * as published by the Free Software Foundation; either version 2 of the |
5 * |
6 * License, or (at your option) any later version. |
6 * This program is free software: you can redistribute it and/or modify |
7 * |
7 * it under the terms of the GNU General Public License as published by |
8 * This program is distributed in the hope that it will be useful, but |
8 * the Free Software Foundation, either version 3 of the License, or |
9 * WITHOUT ANY WARRANTY; without even the implied warranty of |
9 * (at your option) any later version. |
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
10 * |
11 * Public License for more details. |
11 * This program is distributed in the hope that it will be useful, |
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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14 * GNU General Public License for more details. |
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15 * |
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16 * You should have received a copy of the GNU General Public License |
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17 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
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18 * |
12 * |
19 * |
13 * This code is made available on the understanding that it will not be |
20 * This code is made available on the understanding that it will not be |
14 * used in safety-critical situations without a full and competent review. |
21 * used in safety-critical situations without a full and competent review. |
15 *) |
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16 |
23 |
17 (* |
24 (* |
18 * An IEC 61131-3 IL and ST compiler. |
25 * An IEC 61131-3 compiler. |
19 * |
26 * |
20 * Based on the |
27 * Based on the |
21 * FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10) |
28 * FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10) |
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29 * |
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27 * and function blocks defined in the standard. |
34 * and function blocks defined in the standard. |
28 * |
35 * |
29 * Timer Function Blocks |
36 * Timer Function Blocks |
30 * --------------------- |
37 * --------------------- |
31 * |
38 * |
32 * NOTE: The timing diagrams in the comments were taken from the |
39 * NOTE: The timing diagrams in the comments (except the state variable) |
33 * IEC 61131-3 standard. |
40 * were taken from the IEC 61131-3 standard. |
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41 *) |
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38 (**************************************************************** |
45 (**************************************************************** |