《电气控制与 PLC》课程设计
符号..............................................................................................................................................8
作用..............................................................................................................................................8
辅助继电器..................................................................................................................................8
M1.0..............................................................................................................................................8
M10...............................................................................................................................................8
自锁使系统持续工作..................................................................................................................8
M1.1..............................................................................................................................................8
M11...............................................................................................................................................8
上、下课以外响铃时间到..........................................................................................................8
M1.2..............................................................................................................................................8
M12...............................................................................................................................................8
上课时间到..................................................................................................................................8
M1.3..............................................................................................................................................8
M13...............................................................................................................................................8
下课时间到..................................................................................................................................8
时能继电器..................................................................................................................................8
V14.7............................................................................................................................................8
V...................................................................................................................................................8
开启 TD-200.................................................................................................................................8
定时器..........................................................................................................................................8
T101..............................................................................................................................................8
T1..................................................................................................................................................8
其他铃(15 秒).........................................................................................................................8
T102..............................................................................................................................................8
T2..................................................................................................................................................8
上课铃(15 秒).........................................................................................................................8
T103..............................................................................................................................................8
T3..................................................................................................................................................8
下课铃响(2 秒).......................................................................................................................8
续表 3-2........................................................................................................................................9
T104..............................................................................................................................................9
T4..................................................................................................................................................9
下课铃停(1 秒).......................................................................................................................9
T105..............................................................................................................................................9
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