请问这幅梯形图是用什么软件编的? 还有线圈(P)M1.1代表什么意思,为什么后面还能接线圈(S)Q4.0? 谢谢了~
http://s19.photo.store.qq.com/http_imgload.cgi?/rurl4_b=505aaecf63dcb8f6864d1c93a4d2d634bf87a7e807df65a678b5e95451607d3a73105f6d03c023cb12969d52508519a5eb3e034eaace8521d0305ffa55746d0e3e4a87a441323bd5187ec506fc547aa5c439a365