[quote]FUNCTION_BLOCK "FR-A8NP"
{ S7_Optimized_Access := 'TRUE' }
VERSION : 0.1
//MITSUBISHI FR-A800 INVERTER FR-A8NP PFOFIBUS card

   VAR
      CUNT_READ { S7_HMI_Accessible := 'False'; S7_HMI_Visible := 'False'} : Int;
      PKE_RESP { S7_HMI_Accessible := 'False'; S7_HMI_Visible := 'False'} : Word;   // COMMAND RESPONSE
      fp_RUN { S7_HMI_Accessible := 'False'; S7_HMI_Visible := 'False'} : Bool;
      AK_DONE { S7_HMI_Accessible := 'False'; S7_HMI_Visible := 'False'} : Bool;
      AK_READY { S7_HMI_Accessible := 'False'; S7_HMI_Visible := 'False'} : Bool;
      AK_BUSY { S7_HMI_Accessible := 'False'; S7_HMI_Visible := 'False'} : Bool;
      AK_ERROR { S7_HMI_Accessible := 'False'; S7_HMI_Visible := 'False'} : Bool;
   END_VAR

NETWORK
TITLE = READ PKW
//PPO type1 FR_AN8NP,melc0ea8.gsd
//6=0110
//PNU = 1.2,输出电流，0.1 A PKE IND = 6001 0200H#16
//PNU = 1.7,电机转矩,0.1%PKE IND = 6001 0700H#16
//PNU = 1.8,直流侧输出电压,0.1 V PKE IND = 6001 0800H#16
//PNU = 1.14,输出功率,0.1 kW PKE IND = 6001 0E00H#16
//PNU = 947.1,故障代码 PKE IND = 63 B3 0100H#16
//PNU = 949.1,输出频率 PKE IND = 63 B5 0100H#16
//PNU = 949.2,输出电流 PKE IND = 63 B5 0200H#16
//PNU = 949.3,输出电压 PKE IND = 63 B5 0300H#16

//READ ONE PARAMETER EVERY SCAN CYCLE
//READ PKW
      CALL DPRD_DAT
      {ptr_type := 'Variant', laddr_type := 'HW_IO'}
      (  LADDR                       := #II_Addr_1 ,
         RET_VAL                     := #RD_VAL_1 ,
         RECORD                      := #READ_1
      );
//读AK,PWE AW F000H =(15-12 bit)000H ;= 4000H,传输完成;=7000H,指令错;=0000H,busy;
      L #READ_1.PKE;
      L W#16#F000;
      AW;
      T #PKE_RESP;
      L W#16#4000;
      ==I;
      = #AK_DONE;
      L #PKE_RESP;
      L W#16#7000;
      ==I;
      = #AK_ERROR;
      L #PKE_RESP;
      L W#16#0000;
      ==I;
      = #AK_BUSY;
//READ PNU VALUE

//READ FAULT CODE WHEN IT HAPPENED;WITH OUT FAULT,SEND REQUEST
      A #READ_2.ZSW.FAULT;
      AN #AK_BUSY;
      JC L_CODE;
      A #AK_BUSY;
      JC NO_TASK;
      L #CUNT_READ;
      L 1;
      ==I;
      JC L_CURRENT;
      L #CUNT_READ;
      L 2;
      ==I;
      JC L_DCVOLT;
      L #CUNT_READ;
      L 3;
      ==I;
      JC L_TORQUE;
      L #CUNT_READ;
      L 4;
      >=I;
      L #CUNT_READ;
      JC L_POWER;
      L #CUNT_READ;
L_CURRENT:      NOP 0;
      L W#16#6001;
      T #WRITE_1.PKE;
      L W#16#0200;
      T #WRITE_1.IND;
      L #CUNT_READ;
      + 1;
L_DCVOLT:      NOP 0;
      L W#16#6001;
      T #WRITE_1.PKE;
      L W#16#0800;
      T #WRITE_1.IND;
      L #CUNT_READ;
      + 1;
L_TORQUE:      NOP 0;
      L W#16#6001;
      T #WRITE_1.PKE;
      L W#16#0700;
      T #WRITE_1.IND;
      L #CUNT_READ;
      + 1;
L_POWER:      NOP 0;
      L W#16#6001;
      T #WRITE_1.PKE;
      L W#16#0E00;
      T #WRITE_1.IND;
      L #CUNT_READ;
      + 1;
L_CODE:      NOP 0;
      L W#16#63B3;
      T #WRITE_1.PKE;
      L W#16#0100;
      T #WRITE_1.IND;
NO_TASK:      NOP 0;
//REQUEST
      CALL DPWR_DAT
      {ptr_type := 'Variant', laddr_type := 'HW_IO'}
      (  LADDR                       := #II_Addr_1 ,
         RECORD                      := #WRITE_1 ,
         RET_VAL                     := #WR_VAL_1
      );
END_FUNCTION_BLOCK[/quote]

       原来一直使用西门子、ABB变频器器，PZD数据够用，这个三菱的PROFIBUS板子只有2个可用，第一个固定控制字/状态字，第二个固定给定/反馈频率，其他保留。。。

       现在想使用PKE IND PWE来依次读电流，转矩，母线电压，故障代码，然而就产生了读写时序的问题。

      PNU IND 表示代码写在了程序的注释里。

      我这样理解：先写任务--读电流[PLC扫描周期m]，然后读返回的值--电流[PLC扫描周期m+1]，再写任务--读转矩[PLC扫描周期m+2]，然后读返回的值--转矩[PLC扫描周期m+3]。。。是不是要判断指令的响应AK=4

图片链接

FR-A7NP和FR-A8NP一样的使用，编程没区别，2个对照看。

点击蓝色文档名进入百度网盘下载：

三菱FR-A800变频器说明书 6x3m

三菱FR-A7NP PROFIBUS通讯板说明书中文 3cf7

三菱FR-A8NP PROFIBUS通讯板说明书英文 pcvr