贴个压缩机顺序启动的程序，求高手给予点评指导（初次发贴版主留情 点击：570 | 回复：9
VAR
RunTime_first AT %QD80: DWORD; (*1#螺杆压缩机累计运行时间*)
RunTime_second AT %QD84: DWORD; (*2#压缩机累计运行时间*)
RunTime_third AT %QD88: DWORD; (*3#压缩机累计运行时间*)
RunTime_fourth AT %QD92: DWORD; (*4#压缩机累计运行时间*)
P_Less: BOOL; (*中间辅助继电器，检测压力小于设定压力值标志*)
M3: BOOL; (*2#压缩机运行标志*)
M4: BOOL; (*3#压缩机运行标志*)
M5: BOOL; (*4#压缩机运行标志*)
END_VAR
(*2#压缩机未运行，累计运行时间是2#3#4#中最短，检测总压力低于设定标准压力值，启动2#压缩机*)
IF RunTime_second <= RunTime_third
AND RunTime_second <= RunTime_fourth
AND P_Less=TRUE AND M3=0
THEN M3 = TRUE;
END_IF;
(*2#压缩机未运行，累计运行时间是未运行压缩机中较小者时，检测总压力低于设定标准压力值，启动2#压缩机*)
(*3#压缩机累计运行时间最短，但3#压缩机正处于运行状态，2#压缩机累计运行时间是未运行压缩机2#和4#
中较小者时，检测总压力低于设定标准压力值，启动2#压缩机*)
IF RunTime_second >= RunTime_third
AND RunTime_second <= RunTime_fourth
AND P_Less=TRUE AND M3=0 AND M4=1
THEN M3 = TRUE;
END_IF;
先传一部分上来，期待回音....
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