PLC控制中央空调程序


            |
   |            |                     K1200 |
   |            +------------------------------------------(T2 )+
   |                                    |
   |                                    |
   |                                    |
   |                                    |
   |M10  X26                             M10  |
 399 +-I I---I I-+------------------------------------------------------( )--+
   |FSBT -YL |                           FSBT |
   |      |                              |
   |      |                              |
   |      |                              |
   |T2     |                              |
   +-I I-------+                              +
   |                                    |
   |                                    |
   |                                    |
   |                                    |
   |M7  X5                             K6000 |
 403 +-I I---I I-+------------------------------------------------------(T10 )+
   |NLTJK TX>TS|                              |
   |      |                              |
   |      |                              |
   |      |                              |
   |      |                              |
   |      +------------------------------------------------[RST M104 ]+
   |                                 Q1G1 |
   |                                    |
   |                                    |
   |                                    |
   |T10  M233                               |
 409 +-I I---I I--------------------------------------------------[SET M103 ]+
   |   QF<10                            Q3K  |
   |   0                                 |
   |                                    |
   |                                    |
   |M7  X5                             K1200 |
 412 +-I I---I/I-+------------------------------------------------------(T11 )+
   |NLTJK TX>TS|                              |
   |      |                              |
   |      |                              |
   |      |                              |
   |      |                              |
   |      +------------------------------------------------[RST M103 ]+
   |                                 Q3K  |
   |                                    |
   |                                    |
   |                                    |
   |T11  M208                               |
 418 +-I I---I I--------------------------------------------------[SET M104 ]+
   |   QF>75                            Q1G1 |
   |                                    |
   |                                    |
   |                                    |
   |M2  X6                             K600 |
 421 +-I I---I I-+------------------------------------------------------(T12 )+
   |ZLEN PQ<PL|                              |
   |      |                              |
   |      |                              |
   |      |                              |
   |      |M7  M233                      M105 |
   |      +-I I---I I--------------------------------------------( )--+
   |      NLTJK QF<10                      Q3K1 |
   |         0                           |
   |                                    |
   |                                    |
   |M2  X13                             K600 |
 429 +-I I---I I-+------------------------------------------------------(T13 )+
   |ZLEN PQ>PH|                              |
   |      |                              |
   |      |                              |
   |      |                              |
   |      |M7  M208                      M106 |
   |      +-I I---I I--------------------------------------------( )--+
   |      NLTJK QF>75                      Q1G2 |
   |                                    |
   |                                    |
   |                                    |
   |T12                                   |
 437 +-I I-+------------------------------------------------------[SET M8  ]+
   |   |                              ERROR |
   |   |                                 |
   |   |                                 |
   |   |                                 |
   |T13 |                                 |
   +-I I-+                                 +
   |                                    |
   |                                    |
   |                                    |
   |                                    |
   |                                    |
 440 +------------------------------------------------------------[MCR N1  ]+
   |                                    |
   |                                    |


报警
   |                                    |
   |                                    |
   |X14  M2  M230                         M108 |
 442 +-I I-+-I I-+-I I--------------------------------------------------( )--+
   |HOTGF|ZLEN |QF>0                         QG  |
   |   |   |                              |
   |   |   |                              |
   |   |   |                              |
   |M615 |   |                           K9000 |
   +-I I-+   +---------------------------

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