ESP8266 Mode Bridge Modbus RTU Slave - Modbus TCP IP Slave

Given previous post, this time it has been implemented ESP8266 Bridge Industrial Modbus protocol, in next tutorials will make the connection ARDUINO ESP8266 and SCADA HMI.

Post Recommended: ESP8266 As Slave Modbus TCP IP

Arquitecture

Explaining project
ESP8266 module,
1 - It is configured by your serial port Modbus RTU Slave Serial, complementing a MAX 232 chip can convert from TTL to RS232.
2 - It is set by the wireless part - WLAN is configured as Modbus Slave TCP IP through the port 502,
3 - internally in the module 20 records both Modbus TCP IP Modbus RTU as follows redirected:

Modbus RTU -> Modbus TCP IP

From the Registry 0-9 Modbus RTU slave to the registers 0-9 Modbus TCP slave, all that is written in the first 10 records Slave RTU will be sent in the first 10 TCP Slave:

  ////  Write  Modbus TCP in Modbus RTU   10 Holding Registers
  ////  Escritura de Modbus TCP en  Registros 10  Modbus RTU  
    
  regBank.set(40001,  Mb.MBHoldingRegister[0]);   
  regBank.set(40002,  Mb.MBHoldingRegister[1]);     
  regBank.set(40003,  Mb.MBHoldingRegister[2]);   
  regBank.set(40004,  Mb.MBHoldingRegister[3]); 
  regBank.set(40005,  Mb.MBHoldingRegister[4]); 
  regBank.set(40006,  Mb.MBHoldingRegister[5]); 
  regBank.set(40007,  Mb.MBHoldingRegister[6]); 
  regBank.set(40008,  Mb.MBHoldingRegister[7]);   
  regBank.set(40009,  Mb.MBHoldingRegister[8]);     
  regBank.set(40010,  Mb.MBHoldingRegister[9]);   

Modbus TCP IP --> Modbus RTU
From the Registry 10-19 Modbus TCP slave IP to records 10-19 Modbus RTU slave, all that is written from register 10 Modbus TCP slave IP registers be sent from the RTU Slave 10.

 ////  Write Modbus RTU in Modbus TCP  10 Holding Registers
  ////  Escritura de Modbus RTU en  Registros 10  Modbus TCP  

  Mb.MBHoldingRegister[10] =  regBank.get(40011);
  Mb.MBHoldingRegister[11] =  regBank.get(40012);
  Mb.MBHoldingRegister[12] =  regBank.get(40013);
  Mb.MBHoldingRegister[13] =  regBank.get(40014);
  Mb.MBHoldingRegister[14] =  regBank.get(40015);
  Mb.MBHoldingRegister[15] =  regBank.get(40016);
  Mb.MBHoldingRegister[16] =  regBank.get(40017);
  Mb.MBHoldingRegister[17] =  regBank.get(40018);
  Mb.MBHoldingRegister[18] =  regBank.get(40019);
  Mb.MBHoldingRegister[19] =  regBank.get(40020);

Run Slaves

 
     slave.run();  /// Run  Slave Modbus RTU
     Mb.Run();     /// Run Slave  Modbus TCP

Materials

1 ESP8266
2 Converter FTDI Serial USB
3 Regulator de 5 a 3.3v for supply ESP8266

Video Test Mode Modbus Bridge ESP8266

ESP8266 Bridge  Slave Modbus TCP - Slave Modbus RTU

ESP8266 slave modbus TCP IP  Industrial Applications 

Connections

Downloads:

 Code Arduino IDE

Part 1

 Arduino Mega 2560 Oled Display I2C Master Modbus RTU Scada Industrial Connection

Part 2 

 ESP8266 - 01 Slave Modbus TCP IP (Ethernet) for industrial applications

More Info:

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