有一份,供参考: 3 O- t* P7 C9 ?) l& \% yDevelopment of a monitoring and control platform for PLC-based applications0 {: f; t8 [5 g Computer Standards & Interfaces, Volume 30, Issue 3, March 2008, Pages 157-166 / Q; f( S" b2 e5 @S. Da'na, A. Sagahyroon, A. Elrayes, A.R. Al-Ali and R. Al-Aydi 4 r3 {4 s1 ~' U