FC237塊：用于處理Interbus總線上的4~20mA，0~10V模擬量信號(hào)
   L     #PW                         //int:IW22:22=10110
      T     MW   800                    //10110
//;
      L     #P_Q                        //word
      L     'Q '                        //字符型
      <>I                               //ACCU2=#P_Q,ACCU1='Q'
      JC    M001                        //if ACCU2=ACCU1則執(zhí)行下列程序，否則跳到M001
//;

      T     #conv_akku1                 //Dword,值='Q'
      L     STW                         //裝載狀態(tài)字內(nèi)容到ACCU1
      T     #conv_stw                   //裝入ACCU1內(nèi)容
   L     MB   801                    //ACCU1=0000 0000 0001 0110=22
      SLW   3                           //ACCU1=0000 0000 1011 0000=176
      LAR1                              //AR1=0000 0000 0000 0000 0000 0000 1011 0000  32位指針=P#22.0
      L     #conv_stw                   //原狀態(tài)字內(nèi)容裝入ACCU1
      T     STW                         //裝入現(xiàn)在狀態(tài)字
   L     #conv_akku1                 //'Q'裝入ACCU1
      L     IW [AR1,P#0.0]              // PIW [AR1,P#0.0]:IW22值裝入ACCU1
      JU    M002                        //無(wú)條件跳到M002
//;
M001: NOP   0

      T     #conv_akku1                 //Dword,值='Q'
      L     STW                         //裝載狀態(tài)字內(nèi)容到ACCU1
      T     #conv_stw                   //裝入ACCU1內(nèi)容
   L     MB   801                    //ACCU1=0000 0000 0001 0110=22
      SLW   3                           //ACCU1=0000 0000 1011 0000=176
      LAR1                              //AR1=0000 0000 0000 0000 0000 0000 1011 0000  32位指針=P#22.0
      L     #conv_stw                   //原狀態(tài)字內(nèi)容裝入ACCU1
      T     STW                         //裝入現(xiàn)在狀態(tài)字
   L     #conv_akku1                 //'Q'裝入ACCU1
      L     IW [AR1,P#0.0]              // PIW [AR1,P#0.0]:IW22值裝入ACCU1
//;
M002: T     MW   802                    //IW22
//;
      L     #KT_I                       //Int=2
      L     0
      ==I  
      JC    M003
//;
      L     #KT_I
      L     1
      ==I  
      JC    M004
//;
      L     #KT_I
      L     2
      ==I  
      JC    M005
//;
      L     #KT_I
      L     3
      ==I  
      JC    M006
//;
      L     #KT_I
      L     4
      ==I  
      JC    M007
//;
//;
      JU    M008
//;
M003: AN    M    802.7                  //MW802=IW22,if最高位（符號(hào)位)為0跳到M009
      JC    M009
      L     0                           //if IW22最高位為"1"=負(fù)數(shù)，則清零數(shù)據(jù)塊DB201之?dāng)?shù)據(jù)字：D_101
      T     #XA
      JU    M008                        //無(wú)條件跳到M008
//;
//;
//;
M009: L     #OGR                        //4500.0
      L     #UGR                        //0.0
      -R                                //ACCU2-ACCU1=4500.0-0.0,結(jié)果存入ACCU1
      L     3.276700e+004               //3.2767x10000=32767.0裝入ACCU1
      /R                                // 4500.0/32767.0=0.13733329264198736533707693716239,結(jié)果存于ACCU1  
      L     MW   802                    //IW22值裝入ACCU1
      DTR                               //轉(zhuǎn)換雙整數(shù)為浮點(diǎn)數(shù)，結(jié)果存入ACCU1
      *R                                //ACCU2*ACCU1=0.1373333*IW22結(jié)果存入ACCU1
      L     #UGR                        //0.0裝入ACCU1
      +R                                //ACCU2+ACCU1,結(jié)果存入ACCU1
      RND                               //ACCU1浮點(diǎn)數(shù)轉(zhuǎn)換為雙整數(shù),結(jié)果存入ACCU1
      T     #XA                         //ACCU1值傳送到DB201之?dāng)?shù)據(jù)字D_101
      JU    M008                        //無(wú)條件跳到M008
//;
M004: L     MW   802
      T     MD   804
      AN    M    802.7
      JC    M010
//;
      L     MD   804
      +     L#-65536
      T     MD   804
//;
M010: L     #OGR
      L     #UGR
      -R    
      T     MD   810
      L     MD   804
      DTR  
      L     3.276700e+004
      +R    
      L     MD   810
      *R    
      L     6.553400e+004
      /R    
      L     #UGR
      +R    
      RND  
      T     #XA
      JU    M008
//;
M007: R     #_FB
      AN    M    803.1
      JC    M005
      L     #UGR
      RND  
      T     #XA
      A     M    803.1
      =     #_FB
      JU    M008
//;
//      L     4.096000e+003
//;
//;
M005: L     #OGR                        //4500.0
      L     #UGR                        //0.0
      -R                                //ACCU2-ACCU1=4500.0-0.0,結(jié)果存入ACCU1
      L     4.096000e+003               //4096.0裝入ACCU1
      /R                                // 4500.0/4096.0=1.0986328125,結(jié)果存于ACCU1
      L     MW   802                    //IW22值裝入ACCU1,例如：             IW22=17364=0100 0011 1101 0100；IW=980=0000 0011 1101 0100
      SRW   3                           //ACCU1-L(低字）右移3位結(jié)果存入ACCU1           =0000 1000 0111 1010=2170； =0000 0000 0111 1010=122
      DTR                               //ACCU1雙字整數(shù)轉(zhuǎn)換為浮點(diǎn)數(shù)，結(jié)果存入ACCU1
      *R                                //ACCU2*ACCU1=2170.0(122.0)*1.0986328125，結(jié)果存入ACCU1
      L     #UGR                        //0.0裝入ACCU1
      +R                                //122.0+0.0
      RND                               //浮點(diǎn)數(shù)轉(zhuǎn)換為雙整數(shù)
      T     #XA                         //模擬值裝入數(shù)據(jù)塊DB201字D_101
      JU    M008                        //無(wú)條件跳到M008
//;
M006: L     #OGR
      L     #UGR
      -R    
      T     MD   810
      L     MW   802
      SRW   3
      DTR  
      L     8.192001e+002
      -R    
      T     MD   802
      AN    M    803.7
      JC    M011
      L     #UGR
      RND  
      T     #XA
      JU    M008
//;
M011: L     MD   810
      L     MD   802
      *R    
      L     3.276800e+003
      /R    
      L     #UGR
      +R    
      RND  
      T     #XA
      JU    M008
M008: NOP   0

FC181上調(diào)用FC237塊，讀出各模擬量輸入地址的實(shí)際值，非常準(zhǔn)確
  CALL  FC   237
       PW  :=192
       KT_I:=2
       OGR :=1.000000e+003
       UGR :=0.000000e+000
       P_Q :=MW902
       XA  :=DB200.DBW2
       _FB :=M905.0
      NOP   0

CALL  FC   237
       PW  :=168
       KT_I:=2
       OGR :=1.000000e+003
       UGR :=0.000000e+000
       P_Q :=MW902
       XA  :=DB200.DBW4
       _FB :=M905.0
      NOP   0

  CALL  FC   237
       PW  :=196
       KT_I:=2
       OGR :=1.000000e+003
       UGR :=0.000000e+000
       P_Q :=MW902
       XA  :=DB200.DBW6
       _FB :=M905.0
      NOP   0

CALL  FC   237
       PW  :=216
       KT_I:=2
       OGR :=6.750000e+002
       UGR :=5.000000e+001
       P_Q :=MW902
       XA  :=DB200.DBW26
       _FB :=M905.0
      NOP   0
注：PW=模擬量輸入地址；XA=處理過(guò)后的模擬輸入值