python - 使用 Pymodbus 顺序读取多个从站

Question

2 个从属设备（设备）正在工作。我使用从属单元#2 和#5。#5 中的 MPR_46S，#2 中的温度计。从地址不是按顺序读取的，所以我需要读取一个我命名为“从跳转”的空从地址

NSlave=[2,5]
Clientnames=["client0","client1","client2","client3",] 

def Find_Device(NSlave,Clientnames):
    i=0
    print("searching devices")
    Devices=[]
    S_Slave=[]
    for i in range(len(NSlave)):

        Clientnames[i].connect()
        # check MPR_46S
        result = Clientnames[i].read_holding_registers(address=0xEC00,count=1,unit=NSlave[i])
        if not result.isError():
            if result.registers==[41223]:
                Devices.append("MPR_46S")
                S_Slave.append(NSlave[i])
                print("device found , Energy-Meter( MPR_46S) ")
            else:
                print("unsuccessful, meter")
        else:
            print('Errory >>>>  {}' , format(result)  )
        Clientnames[i].close()
     
        ####################################### slave_jump
        Clientnames[i].connect()
        result = Clientnames[i].read_holding_registers(address=0x0003,count=1,unit=200)
        Clientnames[i].close()
        ####################################### slave_jump
    
    
        result = Clientnames[i].read_holding_registers(address=0x0003,count=1,unit=NSlave[i])
        Clientnames[i].connect()
        print(Clientnames[i].connect())
        # check Term
        if not result.isError():
            if result.registers == [1]:
                Devices.append("Term")
                S_Slave.append(NSlave[i])
                print("device found ,term")
            
            else:
                print("unsuccessful,term")
        else:
            print('Errory >>>>  {}' , format(result))
        Clientnames[i].close() 
 
        ####################################### slave_jump
        Clientnames[i].connect()
        result = Clientnames[i].read_holding_registers(address=0x0003,count=1,unit=201)
        Clientnames[i].close()
        ####################################### slave_jump

        i+=1
        result.registers=[]
    print(Devices)
    print(S_Slave)
    return (Devices,S_Slave)

我想知道这其中的原因。如果有更好的方法，我想使用

标签： pythonmodbusmaster-slaveraspberry-pi4pymodbus